The royal victoria hospital is a tertiary trauma centre receiving pelvic injury referrals for a population of 1.7 million. The use of ilio-sacral screw fixation with low anterior frame stabilisation has been adopted as the principle treatment for unstable pelvic ring injuries in our institution. We aim to describe our practice and outcomes following the use of percutaneous screw fixation of the pelvis. The review included standardised assessment of health-related quality of life (SF-36) as well as the Iowa pelvic score and Majeed pelvic injury outcome scores. Data was also collected on associated injuries, post-operative complications, nerve injury and pain scores. A total case series of 45 patients undergoing percutaneous ilio-sacral screw fixation following traumatic pelvic injury were identified over a 5 year period. Of these 23 were contactable to follow-up or responded to questionnaire review. The mean follow up was 680 days (range 151–1962). The mean age was 33 (range 18–57). The mean SF-36 physical and mental scores were 38 and 46 respectively. The mean Majeed score was 69 and Iowa pelvic score was 65. The mean pain score was 3.5 (range 0–7). There were no incidences of deep infection, post-operative PE or nerve injury related to screw insertion. Patients with isolated pelvic injuries performed better on outcome scoring however the low SF-36 scores highlight the severity of pelvic injuries

Introduction: Percutaneous cannulated screw placement (PCSP) is a safe method of internal fixation, indicated for pelvic ring fractures. Due to the close proximity of neurovascular structures to the path of the screw placed in either the Posterior elements (PE) or Anterior column (AC), pre-operative planning is needed to prevent injury.

This study aims to develop a pre-operative protocol for the Australian population, regarding the safe number of screws and size of screw that may be placed. Additionally, results from the study may help identify patients at increased risk of injury during PCSP.

Methods: All patients were from the Australian population and had been admitted into the emergency department at The Royal Melbourne Hospital. Control patients had no pathology in the pelvis, while treated group patients had pelvic ring fractures and were treated with PCSP.

Safe corridor measurements of the PE and AC were taken in the control patients. Pelvic CT scans, taken as part of trauma protocol, were reconstructed using 3D modelling and the dimensions of the whole (3 dimensional) safe corridor measured.

The accuracy of screw placement was determined in each treated patient. Accuracy was assessed by the screenshot method, the post-operative CT method or by both methods. In both methods, accuracy was taken as the deviation between the positions of the actual screw and planned screw.

Results: There were 22 control patients and 12 treated patients.

The mean ± (standard deviation, SD) minimum measurement of the safe corridor at the PE was 15.6 ± 2.3 mm (range 11.6 mm to 20.2 mm) and at the AC was 5.9 ±1.6 mm (range 3.0 mm to 10.0 mm).

The mean ± (SD) accuracy of screw placement was 6.1 ± 5.3 mm and ranged from a displacement of 1.3 mm to 16.1 mm.

Conclusion: The minimum dimensions of the safe corridor and the accuracy of screw placement occurred over a wide range. We recommend that dimensions of the safe corridor be assessed pre-operatively in every patient using 3D modelling to determine the safe number and size of screw that can be placed.

We reviewed 110 patients with an unstable fracture of the pelvic ring who had been treated with a trapezoidal external fixator after a mean follow-up of 4.1 years. There were eight open-book (type B1, B3-1) injuries, 62 lateral compression (type B2, B3-2) and 40 rotationally and vertically unstable (type C1-C3) injuries.

The rate of complications was high with loss of reduction in 57%, malunion in 58%, nonunion in 5%, infection at the pin site in 24%, loosening of the pins in 2%, injury to the lateral femoral cutaneous nerve in 2%, and pressure sores in 3%. The external fixator failed to give and maintain a proper reduction in six of the eight open-book injuries, in 20 of the 62 lateral compression injuries, and in 38 of the 40 type-C injuries. Poor functional results were usually associated with failure of reduction and an unsatisfactory radiological appearance. In type-C injuries more than 10 mm of residual vertical displacement of the injury to the posterior pelvic ring was significantly related to poor outcome. In 14 patients in this unsatisfactory group poor functional results were also affected by associated nerve injuries. In lateral compression injuries the degree of displacement of fractures of the pubic rami caused by internal rotation of the hemipelvis was an important prognostic factor.

External fixation may be useful in the acute phase of resuscitation but it is of limited value in the definitive treatment of an unstable type-C injury and in type-B open-book injuries. It is usually unnecessary in minimally displaced lateral compression injuries.

Unstable pelvic injuries in young children with an immature pelvis have different modes of failure from those in adolescents and adults. We describe the pathoanatomy of unstable pelvic injuries in these children, and the incidence of associated avulsion of the iliac apophysis and fracture of the ipsilateral fifth lumbar transverse process (L5-TP). We retrospectively reviewed the medical records of 33 children with Tile types B and C pelvic injuries admitted between 2007 and 2014; their mean age was 12.6 years (2 to 18) and 12 had an immature pelvis. Those with an immature pelvis commonly sustained symphyseal injuries anteriorly with diastasis, rather than the fractures of the pubic rami seen in adolescents. Posteriorly, transsacral fractures were more commonly encountered in mature children, whereas sacroiliac dislocations and fracture-dislocations were seen in both age groups. Avulsion of the iliac apophysis was identified in eight children, all of whom had an immature pelvis with an intact ipsilateral L5-TP. Young children with an immature pelvis are more susceptible to pubic symphysis and sacroiliac diastasis, whereas bony failures are more common in adolescents. Unstable pelvic injuries in young children are commonly associated with avulsion of the iliac apophysis, particularly with displaced SI joint dislocation and an intact ipsilateral L5-TP.

Cite this article: Bone Joint J 2015; 97-B:696–704.

Determine the infection risk of nonoperative versus operative repair of extraperitoneal bladder ruptures in patients with pelvic ring injuries. Pelvic ring injuries with extraperitoneal bladder ruptures were identified from a prospective trauma registry at two level 1 trauma centers from 2014 to 2020. Patients, injuries, treatments, and complications were reviewed. Using Fisher's exact test with significance at P value < 0.05, associations between injury treatment and outcomes were determined. Of the 1127 patients with pelvic ring injuries, 68 (6%) had a concomitant extraperitoneal bladder rupture. All patients received IV antibiotics for an average of 2.5 days. A suprapubic catheter was placed in 4 patients. Bladder repairs were performed in 55 (81%) patients, 28 of those simultaneous with ORIF anterior pelvic ring. The other 27 bladder repair patients underwent initial ex-lap with bladder repair and on average had pelvic fixation 2.2 days later. Nonoperative management of bladder rupture with prolonged Foley catheterization was used in 13 patients. Improved fracture reduction was noted in the ORIF cohort compared to the closed reduction external fixation cohort (P = 0.04). There were 5 (7%) deep infections. Deep infection was associated with nonoperative management of bladder rupture (P = 0.003) and use of a suprapubic catheter (P = 0.02). Not repairing the bladder increased odds of infection 17-fold compared to repair (OR 16.9, 95% CI 1.75 – 164, P = 0.01). Operative repair of extraperitoneal bladder ruptures substantially decreases risk of infection in patients with pelvic ring injuries. ORIF of anterior pelvic ring does not increase risk of infection and results in better reductions compared to closed reduction. Suprapubic catheters should be avoided if possible due to increased infection risk later. Treatment algorithms for pelvic ring injuries with extraperitoneal bladder ruptures should recommend early bladder repair and emphasize anterior pelvic ORIF

Aims. This study aimed to analyze the correlation between transverse process (TP) fractures of the fourth (L4) and fifth (L5) lumbar vertebrae and biomechanical and haemodynamic stability in patients with a pelvic ring injury, since previous data are inconsistent. Patients and Methods. The study is a retrospective matched-pair analysis of patients with a pelvic fracture according to the modified Tile AO Müller and the Young and Burgess classification who presented to a level 1 trauma centre between January 2005 and December 2014. Results. A total of 728 patients with pelvic ring injuries were included, of whom 183 (25.1%) had a biomechanically unstable pelvic fracture. Of these patients, 84 (45.9%) had a fracture of a TP of L4 and/or L5. A total of 73 patients (13.4%) with a stable pelvic ring injury (p < 0.001) had a fracture of a TP. Patients with a fracture of a TP of L4 and/or L5 had a 5.5-fold risk (odds ratio (OR)) of having a biomechanically unstable pelvic injury. TP fractures (OR 1.6, p = 0.2) could not be confirmed as an independent predictor of haemodynamic instability. Conclusion. This is the first study that has demonstrated a positive correlation between a TP fracture of L4 and/or L5 and a biomechanically unstable pelvic ring injury. The presence of transverse process fractures of L4 and/or L5 indicates increased severity of pelvic injury and therefore can help in the planning of emergency treatment. Cite this article: Bone Joint J 2018;100-B:1214–19

Aims: Evaluation of: 1/ type and incidence of pelvic ring injuries, 2/ type and incidence of associated injuries, 3/ type of pelvic ring injuries pathomechanism, 4/ influence of pelvic ring injuries on trauma severity score, 5/ analysis of clinical long term results. Material and methods: Retrospective evaluation of 257 patients with pelvic ring injuries treated between 1989–2003 had been made. Mean patients age was: 65 y.o. (Range: 32–61 y.o.). Mean follow-up time: 57,5 months (range: 18–192 m.). All patients were treated no operatively: bed-rest, hamaque suspension, and skeletal traction. Analysis of pelvic injuries was made by Tiles classification. Evaluation of pelvic injuries pathomechanism was made by Young-Burgess classification. Clinical end results were evaluated by Iowa Pelvic Score. In polytraumatized patients trauma severity was evaluated by AIS and ISS. Results: Incidence of pelvic injury in hospitalized patients was 1,3%. In study group there were following pelvic injury types: type A – 14 %, type B – 77 % and type C – 9%. Pathomechanisms of pelvic injuries in study group were following: type LC – 61%, type APC – 30%, type VS – 2%, type CMI – 7%. Long term clinical results in Iowa pelvic Score were for pelvic ring injuries: type A – 92 p., type B – 86 p., type C – 67 p. Mean value of ISS index in patients with pelvic ring injuries was 23p, mean value of ISS index in patients without pelvic ring injuries was 19p. Conclusions: 1/ pelvic ring injuries in standard orthopedic and traumatic department are rare, 2/ pelvic ring injuries are frequent in polytraumatized patients, 3/ type C according to Tile’s classification is the most frequent type of pelvic ring injury, 4/ type LC according to Young-Burgess classification is the most frequent type of pelvic ring injury pathomechanism, 5/ incidence of pelvic ring injury in polytraumatized patient increases ISS index, 6/ long term clinical results suggested that most pelvic ring injuries can be successfully treated nonoperatively

Purpose of study. To review the treatment and outcomes of paediatric pelvic ring injuries in the UK. Methods and results. We performed a retrospective review of all pelvic fracture admissions to an English paediatric major trauma centre (MTC) from 2012 to 2016. A total of 29 patients were admitted with pelvic ring injuries with a mean age of 11 years (4- 16yrs). Road traffic accident was the mechanism in majority (72%), followed by fall from height (24%). Femoral shaft fracture was present in 5 (17%), head injury in 5 (17%), chest injuries in 5 (17%) and bladder injury in one child. 48% patients needed surgical procedures for fractures or associated injuries. We differentiated injuries according to the classification system of Torode and Zeig. 17% were Type A, 3% Type B, 48% Type C and 31% Type D. Almost all (93%) patients were treated conservatively. 51% of patients were allowed to mobilize full weight bearing after a period of bed rest. Non-weight bearing mobilization was recommended for fractures extending into the acetabulum, sacral fractures, unstable fracture patterns or associated fractures (neck of femur, femoral shaft and tibial shaft). Surgical fixation occurred in two patients. Both of these patients had significantly displaced Type D fractures. Only 44% of patients were back to sports at six months. Conclusions. Pelvic ring injuries are rare within the paediatric population and are associated with a high incidence of concomitant injury and significant functional morbidity. Their treatment should involve a multidisciplinary approach, which includes specialist in the care of pelvic trauma

To evaluate efficacy and outcome of embolisation following pelvic ring injuries in patients presented with ongoing hypovolaemic shock. Between 2000 and 2003, 200 poly-trauma patients presented in our institutions following pelvic ring injuries. Those with ongoing hypovolaemic shock who were treated within 24h of admission with embolisation were included in this study. Demographics, mechanism of injury, ISS, type of pelvic ring fracture, arterial source of bleeding, hours from injury to embolisation, and outcome were all recorded prospectively. Out of the 200 treated in our institutions 17 (8.5%) underwent angio-embolisation. The mean age of the patients was 37 (14-70) and the mean ISS was 29. Distribution of pelvic ring injuries included: 3LC, 7APC, 7VS. The mean time from injury to embolisation was 15 hours. 8/17 patients were initially treated with an external fixator. The distribution of arterial injuries was: 7 superior gluteal arteries, 8 internal iliac arteries, 1 obturator artery and 1 internal pudental artery. The mean number of units transfused prior to embolisation was 22 (range 6-50). Mortality rate was 4 (23%) out of 17 embolised patients. Angio-embolisation for pelvic ring injuries occurred in 8.5% of our study population. This study indicates that only a small proportion of patients required embolisation secondary to arterial bleeding. The overall survival rate was in accordance to published international experience. Embolisation should be considered as a valid adjunct in some selected group of patients with pelvic fractures where ongoing bleeding refractory to other treatment modalities is present

Purpose: To evaluate efficacy and outcome of embolisation following pelvic ring injuries in patients presented with ongoing hypovolaemic shock. Methods: Between 2000 and 2003, 200 poly-trauma patients presented in our institutions following pelvic ring injuries. Those with ongoing hypovolaemic shock who were treated within 24h of admission with embolisation were included in this study. Demographics, mechanism of injury, ISS, type of pelvic ring fracture, arterial source of bleeding, hours from injury to embolisation, and outcome were all recorded prospectively. Results: Out of the 200 treated in our institutions 17 (8.5%) underwent angio-embolisation. The mean age of the patients was 37 (14–70) and the mean ISS was 29. Distribution of pelvic ring injuries included: 3LC, 7APC, and 7VS. The mean time from injury to embolisation was 15 hours. 8/17 patients were initially treated with an external fixator. The distribution of arterial injuries was: 7 superior gluteal arteries, 8 internal iliac arteries, 1 obturator artery and 1 internal pudental artery. The mean number of units transfused prior to embolisation was 22 (range 6–50). Mortality rate was 4 (23%) out of 17 embolised patients. Angio-embolisation for pelvic ring injuries occurred in 8.5% of our study population. This study indicates that only a small proportion of patients required embolisation secondary to arterial bleeding. The overall survival rate was in accordance to published international experience. Conclusion and Significance: Embolisation should be considered as a valid adjunct in some selected group of patients with pelvic fractures where ongoing bleeding refractory to other treatment modalities is present

Aim of study: To evaluate infectious complications in patients operated for pelvic ring injury (level 1 trauma-centre). Method: Retrospective study of patients treated for pelvic ring injury in 5 years (July 1999 – June 2004), in whom wound infection was diagnosed clinically (purulent secretion) or by microbiological culture. Results: In the period 102 patients with pelvic ring injury as part of polytrauma were treated in trauma-centre. Thirteen patients died during few hours after admission without any surgical treatment of pelvis fracture and were excluded from the study group. Type A fracture of AO/ASIF classification was diagnosed in 18 (20 %), type B in 48 (54 %), type C in 23 patients (26 %). Forty three patients were operated (25 ORIF, 18 external fixation). Postoperative infection was diagnosed in 4 patients (9 % of all surgically treated) with mixed bacterial flora isolated in 3 patients and negative culture in 1 patient. In the same time period the frequency of infectious complications after the surgical treatment of musculoskeletal injuries was 1,3 % and mixed bacterial flora was detected in only 40 % of them. Conclusion: In patients surgically treated for pelvic ring injury the occurence of infectious complications is significantly higher than in patients surgically treated for other skeletal injury. The infections are frequently poly-microbial

Traditionally, unstable anterior pelvic ring injuries have been stabilised with an external fixator or by internal fixation. Recently, a new percutaneous technique of placement of bilateral supraacetabular polyaxial screws and subcutaneous connecting bar to assemble an “internal fixator” has been described. We present the surgical technique and early clinical results of using this technique in twenty-five consecutive patients with a rotationally unstable pelvic ring injury and no diastasis of the symphysis pubis treated between April 2010 and December 2013. Additional posterior pelvic stabilisation with percutaneous iliosacral screws was used in 23 of these patients. The anterior device was routinely removed after three months. Radiological evidence of union of the anterior pelvic ring was seen in 24 of 25 patients at a minimum 6 month follow-up. Thirteen patients developed sensory deficits in the lateral femoral cutaneous nerve (five bilateral) and only one fully recovered. The anterior pelvic internal fixator is a reliable, safe and easy percutaneous technique for the treatment of anterior pelvic ring injuries, facilitating the reduction and stabilisation of rotational displacement. However, lateral femoral cutaneous nerve dysfunction is common. The technique is recommended in cases with bilateral or unilateral pubic rami fractures and no diastasis of the symphysis pubis

Sacral fractures are often underdiagnosed, but are frequent in the setting of pelvic ring injuries. They are mostly caused by high velocity injuries or they can be pathological in aetiology. We sought to assess the clinical outcomes of the surgically treated unstable sacral fractures, with or without neurological deficits. unstable sacral fractures were included in the study. Single centre, prospectively collected data, retrospective review of patients who sustained vertically unstable fractures of the sacrum who underwent surgical fixation. out of a total of 432 patients with pelvis and acetabulum injuries. fifty six patients met the inclusion criteria. 18 patients had sustained zone one injuries. 14 patients had zone 2 injuries and 10 patients had zone 3 injurie. Operative fixation was performed percutaneously using cannulated screws in 18 patients.. Open fixation of the sacrum using the anterior approach in 6 patients. Posterior approach was indicates in all 10 of the zone 3 injuries of the sacrum. While in 4 patients, combined approaches were used. 3 patients had decompression and spinopelvic fixation. Neurological deficits were present in 16% of the patients. 2 patients presented with neurgenic bladder. Of the 4 patients who had neurological fall out, 3 resolved with posterior decompression and posterior fixation. All 4 neurological deficits were due to taction or compression of the nerve roots. No hardware failures or non unions observed. The rate of neurological deficit was related more to the degree of pelvic ring instability than to a particular fracture pattern. Low rates of complications and successful surgical treatment of sacral fractures is achiavable. Timeous accurate diagnosis mandatory

Variations in pelvic anatomy are a major risk factor for misplaced percutaneous sacroiliac screws used to treat unstable posterior pelvic ring injuries. A better understanding of pelvic morphology improves preoperative planning and therefore minimises the risk of malpositioned screws, neurological or vascular injuries, failed fixation or malreduction. Hence a classification system which identifies the clinically important anatomical variations of the sacrum would improve communication among pelvic surgeons and inform treatment strategy. 300 Pelvic CT scans from skeletally mature trauma patients that did not have pre-existing posterior pelvic pathology were identified. Axial and coronal transosseous corridor widths at both S1 and S2 were recorded. Additionally, the S1 lateral mass angle were also calculated. Pelvises were classified based upon the sacroiliac joint (SIJ) height using the midpoint of the anterior cortex of L5 as a reference point. Four distinct types could be identified:. Type-A – SIJ height is above the midpoint of the anterior cortex of the L5 vertebra. Type-B – SIJ height is between the midpoint and the lowest point of the anterior cortex of the L5 vertebra. Type-C – SIJ height is below the lowest point of the anterior cortex of the L5 vertebra. Type-D – a subgroup for those with a lumbosacral transitional vertebra, in particular a sacralised L5. Differences in transosseous corridor widths and lateral mass angles between classification types were assessed using two-way ANOVAs. Type-B was the most common pelvic type followed by Type-A, Type-C, and Type-D. Significant differences in the axial and coronal corridors was observed for all pelvic types at each level. Lateral mass angles increased from Types-A to C, but were smaller in Type-D. This classification system offers a guide to surgeons navigating variable pelvic anatomy and understanding how it is associated with the differences in transosseous sacral corridors. It can assist surgeons’ preoperative planning of screw position, choice of fixation or the need for technological assistance

Introduction: Injuries to the bony pelvis are a significant group of injuries with often serious implications. The close proximity of the bony pelvis to vital organs, it’s involvement in weight bearing and ambulation, and the high energy mechanisms usually required to produce these injuries produces a variety of injury patterns, associated injuries and possible outcomes. Aims: To determine the long-term functional outcomes of displaced pelvic ring injuries treated surgically in the United Kingdom. Methods: All patients with pelvic ring fractures treated surgically were contacted by postal questionnaire. Outcomes were measured using the SF-36, as well as ad-hoc tools including return to work and sporting activities. Injuries were classified using the Young and Burgess (YB) classification system. Results: There was a response rate of 70% (145 of 209 patients). Average age at injury was 40 yrs (16–74 yrs). Average follow up was 5.3yrs (1–12 yrs). There were 45 Antero-Posterior Compression (APC) injuries, 51 Lateral Compression (LC) injuries and 49 Vertical Shear (VS) injuries. 69% of the LC injuries had returned to some form of employment, compared with 58% of the APC injuries and 51% of the VS. 39% of the LC injuries had returned to their pre-injury sporting activities, compared with 27% of the APC and 33% of the VS. The average Physical Functioning Score of the SF-36 outcome tool was 73.2 for the LC injuries, 61.7 for the APC injuries and 63.3 for the VS injuries (scale 0–100, 100 representing best status). These trends were mirrored in the other outcome domains of the SF-36 tool. Conclusions: These results illustrate the long-term morbidity associated with pelvic ring injuries and relationship with injury subtypes. LC injuries appeared to perform better than APC and VS injuries in all outcome measures utilized. These findings may aid in determining the prognosis and provision of services for patients with pelvic ring injuries

The rate of arterial injury in trauma patients with pelvic ring fractures has been cited as high as 15%. Addressing this source of hemorrhage is essential in the management of these patients as mortality rates are reported as 50%. Percutaneous techniques to control arterial bleeding, such as embolization and REBOA, are being employed with increasing frequency due to their assumed lower morbidity and invasiveness than open exploration or cross clamping of the aorta. There are promising results with regards to the mortality benefits of angioembolization. However, there are concerns with regards to morbidity associated with embolization of the internal iliac vessels and its branches including surgical wound infection, gluteal muscle necrosis, nerve injury, bowel infarction, and thigh / buttock claudication. The primary aim of this study is to determine whether pelvic arterial embolization is associated with surgical site infection (SSI) in trauma patients undergoing pelvic ring fixation. This observational cohort study was conducted using US trauma registry data from the American College of Surgeons (ACS) National Trauma Database for the year of 2018. Patients over the age of 18 who were transported through emergency health services to an ACS Level 1 or 2 trauma hospital and sustained a pelvic ring fracture treated with surgical fixation were included. Patients who were transferred between facilities, presented to the emergency department with no signs of life, presented with isolated penetrating trauma, and pregnant patients were excluded from the study. The primary study outcome was surgical site infection. Multivariable logistic regression was performed to estimate treatment effects of angioembolization of pelvic vessels on surgical site infection, adjusting for known risk factors for infection. Study analysis included 6562 trauma patients, of which 508 (7.7%) of patients underwent pelvic angioembolization. Overall, 148 (2.2%) of patients had a surgical site infection, with a higher risk (7.1%) in patients undergoing angioembolization (unadjusted odds ratio (OR) 4.0; 95% CI 2.7, 6.0; p < 0 .0001). Controlling for potential confounding, including patient demographics, vitals on hospital arrival, open fracture, ISS, and select patient comorbidities, pelvic angioembolization was still significantly associated with increased odds for surgical site infection (adjusted OR 2.0; 95% CI 1.3, 3.2; p=0.003). This study demonstrates that trauma patients who undergo pelvic angioembolization and operative fixation of pelvic ring injuries have a higher surgical site infection risk. As the use of percutaneous hemorrhage control techniques increase, it is important to remain judicious in patient selection

Introduction: Early mortality associated with unstable pelvic ring injuries is often secondary to continuous pelvic bleeding. Hemostatic measures such as pelvic binders or external fixation may help to control low pressure bleeding from lacerated veins or broad fracture surfaces, while control of high pressure arterial bleeding may require embolization. Purpose: Evaluate our experience with the control of hemorrhagic shock associated with pelvic ring injuries during initial patient management. Methods: From January 2003 until December 2006, all [105] patients admitted to our level I trauma center with a pelvic or an acetabular fracture were prospectively entered into our polytrauma data base. Of 105 patients, 67 were classified with a type B or C pelvic fracture. All these patients received a pelvic strap belt by the paramedic team at the scene of the accident. Pelvic fractures were diagnosed on the initial anteroposterior pelvic radiograph and computed tomography. From this initial group of 67 patients, we identified 38 as unstable requiring blood transfusion and intensive care monitoring. The results and survival rate were evaluated according to the initial sequence of surgical procedures and the patients were divided into 3 groups, X,Y, and Z Follow-up physical examination and radiographs was performed for all survivors at an average of 10 months post-injury (range, 6 months to 3 years). Results: The average age of the 38 patients was 38.6 years (range, 24–51 years) and their average ISS was 53 (range 21–75).All were injured in a high velocity motor vehicle accident or a fall from a height. The patients were managed in the emergency department by a multidisciplinary team according A.T.L.S. guidelines. Of the 38 patients, five died shortly after arrival in the emergency department despite resuscitation efforts. Within the first 24 hours, pelvic stabilization was performed in 27 patients with either an anterior external fixator frame (n=13), pelvic clamp (n=11) or primary open reduction internal fixation (n=3). In group X, of 19 patients initially treated with external fixation and eventual arterial embolization without laparotomy, 18 (94 %) survived. In group Y, there were 8 patients treated by external fixation, eventual arterial embolization and laparotomy, and 7 (87 %) survived. In group Z, all 6 patients in whom a scratch laparotomy with packing prior to any skeletal fixation was attempted,no patient survived ! All survivors underwent definitive open reduction and plate and screw fixation, with an average ICU stay of 10 days (3–15). Conclusion: This study shows that optimal control of bleeding associated with pelvic ring injuries is achieved by initial skeletal fixation prior to any other surgical procedures. Immediate laparotomy was associated with a high rate of intraoperative death due to the failure to control bleeding

Introduction: Unilateral posterior Pelvic Ring injuries but especially bilateral sacral fractures or bilateral sacroiliac joint (SI) ruptures as well as lumbosacral dislocations and fracture dislocations remains a significant surgical challenge. 1. ,. 2. ,. 3. despite advances in surgical techniques. Although the true incidence of these fractures are unknown, 30% are identified late. 4. The treatment of those fractures varies from conservative treatment, posterior plate fixation, anterior plating as well as percutaneous and open Sacroiliac (SI) joint screws. However, screw pull-outs and loss of fixation in those methods are well described In the Alfred Hospital, Melbourne (Australia) a Level 1 Trauma Center a series of 14 patients were treated from 10/2006 to date with a multiaxial spinal system. Methods: Patients with posterior pelvic injuries separation were identified prospectively since October 2006. Data was extracted from the trauma registry database and medical record and diagnostic imaging. Since Ocober 2006, 10 patients with bilateral posterior pelvic ring injuries and 4 with unilateral injuries were identified for fixation. Technique: The patients were put supine and a incision medial/distalto the posterior iliac spine was made. The placement for the incision gives the surgeon the opportunity to estend the approach to an open reduction of the sacral fracture or SI Joint disruption if a closed reduction cannot be achieved. A pedicel screw from a multiaxial spinal system (Xia, Stryker or Pangea, Synthes) is placed percutaneously in the posterior iliac crest on both sides and the reduction is performed with the screws attached to the screw handles and with Image Intensifier. After the reduction the multiaxial screwheads are bent and transfixed with a bar which is tunneled epifacial. All patients underwent a multislice pelvic and lumbar spine CT and these patients were assessed clinically for neurovascular symptoms and stability. The follow-up included clinical assessment and CT imaging. Results: Since October 2006 14 patients (10 male, 4 female) with an average age of 32.4 years (range: 20–44 years, median 33 years) and an average ISS (Injury Severity Score) of 37 (range: 14–66, median 34). The mechanism of injury for these patients included: pedestrians versus car; motorcylce; paragliding and motor car collision. All patients had associated anterior pelvic ring injuries which were internally fixed in all but one case. The follow up time was one to 18 month. The patients were assessed clinically and with CT imaging. No complications or loss of fixation have been observed in this patient group in this short follow up time. Discussion: The fixation system is highly versaitle and the whole posterior iliac crest can be used for fixation. The posterior instrumentation provides also a good control of the reduction of anterior pelvic ring fractures which should be fixed when associated. In all cases but 3 the nature of the comminuted sacral fractures did not allow the use of SI-Joint screws or anterior SI-Joint plating. The construct provides initial stability and allows mobilization of the patient. It can be used in cases with sacral comminution and may offer advantages over posterior plate fixation, by reducing complications with prominent metalware

We report the functional and socioeconomic long-term outcome of patients with pelvic ring injuries. We identified 109 patients treated at a Level I trauma centre between 1973 and 1990 with multiple blunt orthopaedic injuries including an injury to the pelvic ring, with an Injury Severity Score (ISS) of ≥ 16. These patients were invited for clinical review at a minimum of ten years after the initial injury, at which point functional results, general health scores and socioeconomic factors were assessed. In all 33 isolated anterior (group A), 33 isolated posterior (group P) and 43 combined anterior/posterior pelvic ring injuries (group A/P) were included. The mean age of the patients at injury was 28.8 years (5 to 55) and the mean ISS was 22.7 (16 to 44). At review the mean Short-Form 12 physical component score for the A/P group was 38.71 (22.12 to 56.56) and the mean Hannover Score for Polytrauma Outcome subjective score was 67.27 (12.48 to 147.42), being significantly worse compared with the other two groups (p = 0.004 and p = 0.024, respectively). A total of 42 patients (39%) had a limp and 12 (11%) required crutches. Car or public transport usage was restricted in 16 patients (15%). Overall patients in groups P and A/P had a worse outcome. The long-term outcome of patients with posterior or combined anterior/posterior pelvic ring injuries is poorer than of those with an isolated anterior injury. Cite this article: Bone Joint J 2013;95-B:548–53

There is controversy regarding the optimum method of stabilising traumatic anterior pelvic ring injuries. This study aimed to evaluate the role of pubic symphysis plating. Methods. All patients who underwent pubic symphysis plating in a regional pelvic and acetabular unit were studied. Fracture classification, type of fixation, complications, and incidence of metalwork failure were recorded. Results. Out of 178 consecutive patients, 159 (89%) were studied for a mean of 37.6 months. There were 121 males and 38 females (mean age 43 years). Symphysis pubic fixation was performed in 100 AO-OTA type B and 59 type C injuries using a Matta symphyseal plate (n=92), reconstruction plate (n=65), or DCP (n=2). Supplementary posterior pelvic fixation was performed in 102 patients. 5 patients required revision for failure of fixation or symptomatic instability of the pubic symphysis. A further 7 patients had metalwork removed for other reasons. Metalwork breakage occurred in 63 patients (40%). 62 of these 63 patients were asymptomatic and metalwork was left in situ. Conclusions. Plate fixation of the symphysis pubis is an effective method of stabilising anterior pelvic ring injuries with a low complication rate. There is a high rate of late metalwork breakage, but this is not clinically significant

Aim. Evaluate the outcome and complications of anterior pubic symphysis plating in the stabilisation of traumatic anterior pelvic ring injuries. Methods. All patients who underwent pubic symphysis plating in a tertiary referral unit were studied. Fracture classification, type of fixation, complications, and incidence of metalwork failure were recorded. Results. Out of 178 consecutive patients, 159 (89%) were studied for a mean of 41 months. There were 121 males and 38 females (mean age 38 years). Symphysis pubic fixation was performed in 105 AO-OTA type B and 54 type C injuries using a Matta symphyseal plate (n = 92), reconstruction plate (n = 65), or DCP (n = 2). Supplementary posterior pelvic fixation was performed in 103 patients. 6 patients required revision for failure of fixation or symptomatic instability of the pubic symphysis. A further 7 patients had metalwork removed for other reasons. Metalwork breakage occurred in 66 patients (42%), at a mean of 17 months. 64 of these 66 patients were asymptomatic and metalwork was left in situ. Conclusions. Plate fixation of the symphysis pubis is an effective method of stabilising anterior pelvic ring injuries with a low complication rate. There is a high rate of late metalwork breakage, but this is not clinically significant

Deep infection after acetabular fracture surgery is a serious complication, ranging between 1.2% and 2.5% and has been a challenge for patients and surgeons. It increases length of hospital stay by three to four times due to the need of extra surgeries for debridement, impairs future patient's mobility, and increases the overall costs of care. Aim: We aim to identify pre- and intra-operative risk factors associated with deep infections in surgically treated acetabular fractures. Methods: In a single-center retrospective case-control study, 447 consecutive patients who underwent open reduction and internal fixation of acetabular fractures were included in the study. Diagnosis of surgical site infections required a combination of clinical signs and positive tissue culture or histological signs of tissue infection according to Lipsky et al (2010) and Fleischer et al (2009). To evaluate risk factors from SSI we performed uni- and multivariate analysis by multiple logistic regression. Results: Among 447 patients studied, 23 (5.1%) presented diagnosis of postoperative infection. 349 (78.1%) were male with a mean age of 33.3 years old. Posterior wall fractures accounted for 119 cases (26.6%) followed by 102 (22.8%) double column fractures and 57 (12.8%) T fractures. Factors associated with a significantly risk of infection were patient-related: older age and alcoholism (OR = 5.15, 95% CI = 1.06 to 21.98; p=0.036); trauma-related: fractures of the lower limb (odds ratio [OR] = 2.7, 95% confidence interval [CI] = 1.8 to 6.78; p=0.017), comminution (OR = 3.6, 95% CI = 1.19 to 8.09; p=0.009), pelvic ring injuries (OR = 2.89, 95% CI = 1.07 to 7.63; p=0.037); and surgical-related: peri- operative complications (OR = 5.12, 95% CI = 1.85 to 13.8; p=0.001), and dislocation (OR = 0.21, 95% CI = 0.03 to 0.96; p=0.023). Duration of surgery longer than 300 min (p=0.002), and type of surgical approach (p<0.001) were also associated with infection. Conclusion: Deep infections after acetabular fracture surgery were mainly associated with prolonged duration of surgery and the interrelation with the complexity of the fracture such as double column fractures, combined surgical approach, comminution and intra operative complications. Pelvic ring injuries, lower limb fractures, mean age, no dislocations at the time of accident and alcoholism is others associations

Aim. To evaluate the outcome and complications of pubic symphysis plating in the stabilisation of traumatic anterior pelvic ring injuries. Methods. All patients who underwent anterior pelvic ring stabilisation with a pubic symphysis plate in a tertiary referral pelvic and acetabular reconstruction unit were studied. Patients were followed up annually for five years with AP, inlet and outlet radiographs at each visit. The fracture classification, type of fixation (including additional posterior fixation), and incidence of metalwork failure were recorded. Results. In a series of 178 consecutive patients, 159 (89%) were studied for a mean of 41 months (range 3 months to 13 years). There were 121 males and 38 females, with a mean age of 38 years (9-80yrs). Symphysis pubic fixation was performed in 105 AO-OTA type B and 54 AO-OTA type C injuries using a Matta symphyseal plate in 92, a reconstruction plate in 65, or a DCP in two patients. Supplementary posterior pelvic fixation was performed in 103 patients. Six patients (3.8%) required revision for failure of fixation or symptomatic instability of the pubic symphysis. A further seven patients (4%) had metalwork removed for other reasons. Metalwork breakage occurred in 66 patients (42%). 64 of these 66 patients were asymptomatic and metalwork was left in situ. Conclusion. Plate fixation of the symphysis pubis is an effective method of stabilising anterior pelvic ring injuries with a low rate of complications. There is a high rate of late metalwork breakage, but this is often not clinically significant

Sacroiliac screw fixation is the method of choice for the definitive treatment of unstable posterior pelvic ring injuries; however this technique is demanding and associated with a high risk of iatrogenic neurovascular damage. We therefore evaluated the outcome, complications, surgical and fluoroscopy time for unstable posterior pelvic ring injuries managed with a transiliac locked compression plate. 23 patients were managed with a transiliac locked compression plate for unstable posterior pelvic injuries at a Level I Trauma Center. 21 patients were available for follow up after an average of 30 months and outcome evaluation was performed with the Pelvic Outcome Score, which is composed of a clinical, radiological, and social integration part. The overall outcome for the pelvic outcome score was excellent in 47.6% (10 patients), good in 19% (4 patients), fair in 28.6% (6 patients) and poor in 4.8% (1 patient). 15 out of 21 patients (71.4%) returned to their normal life, 3 patients (14.3%) were limited at work, and 3 patients (14.3%) were not able to return to work due to their disabilities. The social status was unchanged to the preinjury status in 19 patients (90.5%). 13 patients (62%) stated no changes in spare time and sports activities; 4 patients (19%) had minor and another 4 patients (19%) had major restrictions. The average operation time was 101 min and intraoperative fluoroscopic time averaged 74.2 sec. No iatrogenic neurovascular injuries were observed. Posterior percutaneous plate osteosynthesis may be a good alternative to sacral screw fixation because it is quick, safe, and associated with a good functional outcome

Purpose of study. Unstable pelvic ring injuries usually occur in polytrauma patients and are associated with high mortality and morbidity. Percutaneous screw fixation of sacro-iliac joint dislocations, fracture-dislocations and sacral fractures is a well-recognised technique first described by Routt and is increasingly gaining popularity. This method is biomechanically comparable to open reduction and internal fixation with plates and screws but offers the advantages of minimally invasive surgical techniques. It is however a technically demanding procedure with reported complications including hardware failure, misplacement of screws, nerve injury and poor posterior reduction. The purpose of the study is to report clinical results of patients treated with closed reduction and percutaneous ilio-sacral screw fixation for unstable pelvic ring fractures by a single surgeon. Methods. A review of prospectively collected data was performed on all patients who had percutaneous sacro-iliac fixation between 2009 and 2012. Thirty five percutaneus sacro-iliac screws were inserted in 30 patients with a mean age of 25.6 years (range 17–62). Fracture types included 10 AO type B, and 20 AO type C. The mean follow-up period was 11.6 months (range 3–38). The complications assessed were screw misplacement, neurovascular complications, hardware breakage and loss of reduction. Results. All patients had a satisfactory initial reduction. One patient (2.8%) had misplacement of a screw with resultant temporary neurological fallout. One patient (2.8%) had screw misplacement without neurological fallout. Both of these patients initially had two screws inserted and the misplaced screws were removed and not reinserted. One patient (2.8%) had screw cut-out with loss of reduction. This screw was removed, open reduction peformed and the screw was re-inserted. Conclusion. The use of percutaneous sacro-iliac screws provides a safe and effective technique for the management of unstable posterior pelvic ring injuries. Our combined complication rate is comparable to published literature. NO DISCLOSURES

Aims: To determine the incidence and pattern of pain in patients with displaced pelvic ring injuries treated surgically. To investigate the link between pain and neurological injury. Methods: All patients with pelvic ring fractures treated surgically were contacted by a postal questionnaire. Assessment was made from validated pain scores, pain maps, a Visual Analog Scale (VAS) and correlated with outcome scores including SF36 and Euroqol. Injuries were classified using the Young and Burgess (YB) classification. Results: There was a response rate of 85% (151 of 178 patients). Average age at injury was 40 yrs (16–74 yrs). Average follow up was 5.3yrs (1–12 yrs). 72% were male. There were 31% Antero-Posterior Compression (APC) injuries, 37% Lateral Compression (LC) injuries and 32% Vertical Shear (VS) injuries. 76% of all patients reported activity related pain; 70% of APC, 73% of LC and 86% of VS injuries (p=0.05, Chi-squared test). These results correlated directly with the pain domain of the Euroqol tool. There were however no statistically significant differences in the interference of pain with work (SF36) or the VAS between injury classes. There was a 15% prevalence of neurological injury in the cohort (9% of APC, 11% of LC and 27% of VS injuries; p=0.03 Chi-squared test). There were no statistically significant differences in the prevalence of moderate to severe pain (Euroqol) or the VAS between those with and without significant neurological injury. The presence of neurological injury significantly affected return to employment but not return to sports or social activities. Conclusions: These results illustrate the prevalence of significant morbidity in patients with surgically treated pelvic ring fractures. Presence of pain could be linked to injury category but a link with neurological injury was not obvious. This can help give prognostic information to patients suffering displaced pelvic ring injuries requiring surgical reconstruction

We aimed to determine multi-modality outcomes in surgically treated patients with high energy pelvic ring injuries. A retrospective cohort study of all patients with pelvic ring fractures treated surgically within our specialist tertiary referral unit was undertaken between 1994 and 2007. Case-notes and radiographs were reviewed and patients were contacted by postal questionnaire. Outcome measures were return to work, return to pre-injury sports and social activities, and the Short Form-36 (SF-36) outcome tool. Injuries were classified using the Young and Burgess (YB) classifications. There was a response rate of 70% (145 of 209 patients), 74% of the study subjects were male. Average age at injury was 40 yrs (16–74 yrs). Average follow up was 5.3 yrs (1–12 yrs). There were 45 Antero-Posterior Compression (APC) injuries, 51 Lateral Compression (LC) injuries and 49 Vertical Shear (VS) injuries. 58% of the APC injuries had returned to work (including changed roles at work), compared with 68% of the LC injuries and 51% of the VS injuries. 27% of the APC injuries had returned to their pre-injury sports, compared with 39% of the LC and 33% of the VS injuries. 64% of the APC injuries had returned to their pre-injury social activities compared with 77% of the LC and 49% of the VS injuries. The SF-36 average Physical Functioning Score was better for the LC group (73.2) than the APC (61.7) and VS (63.3) groups. This general trend was repeated when the General Health and Social Functioning scores were reviewed. These results illustrate the long-term morbidity associated with pelvic ring injuries and relationship with injury subtypes. The LC injuries appear to have better outcomes with all outcome measures than APC and VS injuries. Further studies are underway to look at other factors and their relationship to outcomes

Much interest and controversy have arisen regarding treatment and prognosis of unstable pelvic fractures. The choice of treatment should be based to a large extent on the long-term outcome. Residual vertical displacement and sacroiliac joint involvement are often cited as being related to poor outcome. This study attempts to clarify whether residual vertical displacement or location of posterior pelvic ring injury correlate with functional outcomes. 33 patients with unstable pelvic fractures not involving the acetabulum were reviewed with greater than 18 months of follow-up. Iowa pelvic scores and descriptive information about sequelae were administered. Fractures were classified according to Tile as 27 type B, and 6 type C fractures. 9 cases were treated with external fixation and 5 cases were treated open reduction and internal fixation. The amount of residual vertical displacement was measured on plain AP radiographs and graded as 0–4,4–10,10–20, or > 20mm. Location of posterior pelvic ring injury was divided into 3 groups, sacral fractures, sacroiliac fracture dislocations, and transiliac fractures. Residual vertical displacement correlated with the incidence of LBP to some extent, but the difference was not statistically significant. Location of the posterior pelvic injury correlated with the incidence of neurologic injury and gait disturbance. There was high incidence of lower extremity fractures associated with the pelvic fractures. The incidence of gait disturbance and Iowa pelvic score were not valid as functional assessment tool. Residual vertical displacement and location of posterior pelvic injury correlated with the functional outcome to some extent

Introduction: The incidence, outcome and recovery of operatively managed pelvic ring fractures were studied from a three-year cohort of patients. No previous published studies have reviewed the factors influencing the outcome of operative stabilization on the neural function and natural recovery in these potentially devastating injuries. Methods: This retrospective case series study of 489 referrals to a tertiary referral unit, from 1st Jan 2004 to 31st Dec 2006, identified 42 (8.6%) patients who had sustained pelvic ring injuries with associated neural injuries. Each pelvic injury was classified using the Tile and Burgess & Young classifications, neural injuries were classified as either complete or incomplete and the degree of post-operative skeletal displacement was quantified using radiographs. A mean clinical and radiographic follow up of 3.5 years was achieved and statistical analysis was performed used chi-squared (SPSS). Results: The mean age of patients with neural injuries was 28 years, 32 (76%) were male and 37 (88%) had unstable, Tile type C, fracture patterns. The mean delay from time of injury to time of pelvic surgery was 11 days (range 3 – 42 days). Full resolution of neural symptoms was observed in 16 (38%) patients, with a mean fracture reduction of < 6mm. Incomplete improvement was observed in 11 patients and 15 patients had ongoing complete lumbosacral palsy. Patients who failed to achieve full resolution of neural function had a mean fracture or sacro-iliac joint reduction of 8.8 mm and the mean delay to surgery was 24 days. Discussion: Pelvic ring injuries with an unstable fracture pattern are associated with a high incidence of neural injury. Accurate fracture reduction and stabilization, achieved without a prolonged delay, creates a better environment to achieve a good neural outcome. In such injuries with complete nerve palsy, delayed and suboptimal surgical reduction predicts a poor prognosis

Aims: To evaluate the outcome after early angiographic embolization in pelvic ring injuries associated with massive bleeding. Methods: We evaluated prospectively 32 consecutive patients. Special attention was paid to the þndings in angiography, the reliability of embolization, and the þnal result (survive or death). The causes of deaths were evaluated as well as the parameters correlating to this. Results: Angiography showed an isolated arterial injury in 16 (50%) and multiple arterial injuries also in 16 patients (50%). 9 patients had bilateral bleeding. Internal iliac artery and/or its main branches was the source of bleeding in 27 (85%), external iliac artery or its main branches in 2 (6%), and branches of both internal and external iliac arteries in 3 patients (9%). The embolization was successful in all cases. 11 patients (34%) died. The early deaths (< 24h) were the result of massive bleeding in 4 out of 5 patients. One died to cardiac failure. Six late deaths were the result of MODS. All the died patients had more than one bleeding artery, and 6 had bilateral bleeding. The non-survivors had more severe injuries (mean ISS 51) and were older (mean age 50,2 yrs) than the survivors (mean ISS 41; mean age 43,9 yrs). Conclusions: Angiographic embolization is an effective and life saving procedure. It should be considered in hypotensive patients with unstable pelvic ring injuries who remain haemodynamically unstable following adequate resuscitation with component therapy and external þxation

Introduction: Injuries to the urinary tract are a well known complication in patients with pelvic trauma. A severe urological injury frequently results in adverse long term outcome and prolonged disability. We present a review of the results of management of urological injury and the impact on final outcome in patients with pelvic fractures. Patients: Out of 554 patients admitted to our center with pelvic fracture, 39 with injury to the urinary tract were identified – 8 females and 31 males (study group). The mean age of the patients was 30.9 yrs (range 15 to 71 yrs) and the mean ISS was 12.9 (range 9 to 22). Two patients had a skin wound communicating with fracture hematoma. Seven (18 %) had upper tract injury, 6 (15.4 %) had extraperitoneal bladder rupture, 9 (23.1 %) had intraperitoneal rupture, 3 (7.6 %) had bladder neck injury and 14 (35.9 %) had urethral injury. The mechanism and type of injury, initial management, timing of urological intervention, orthopaedic procedure complications and long term result in terms of incontinence, stricture and sexual dysfunction were assessed. All patients were assessed based on Orthopaedic, urological and the Euroqol (EQ5D) generic health questionnaire and compared to age and sex matched control group of 47 patients with similar pelvic injuries and ISS but no urological injury. The mean follow up period was 2.3 years. Results: Upper urinary tract injuries: All were managed nonoperatively and had a uniformly good outcome except one patient who had a traumatic renal vein thrombosis and required nephrectomy. Three had acetabular fractures (one ant column and 2 both column fractures) and 4 had pelvic ring injuries (2 AP, 2 LC). Six were operated with av. time delay between injury and surgery being 7.1 days. We consider the urological injury related to the general trauma rather than the specific pelvic injury. Lower tract injuries: 14 out of 15 patients with bladder rupture had a repair of bladder within 24 hours of arrival at our center. One with a small extra-peritoneal tear was managed nonoperatively. Seven had LC injury, 6 had ARC and 2 had acetabular fractures (both column). One of the acetabulum fractures was managed by fixation and bladder repair on the day of arrival and the other had secondary congruence, which was not operated. Pelvic ring injuries were managed by internal and/or external fixation as appropriate. The average time delay between injury and surgery was 1.8 days. One patient with AP2 fracture died after 3 weeks due to severity of associated visceral injuries. Three patients reported failure of erection. All three patients with bladder neck injury had an APC fracture. Two were managed by immediate repair (day 1 and day 2) and had normal continence. One repair was delayed due to delay in transfer and was done on the 4th day. He developed faecal and urinary incontinence and loss of sexual function. Thirteen males had urethral injury – average age 37 yrs (range 19 to 70 years). Five had APC and five LC pelvic ring injuries, three had acetabular fractures. Three patients had a primary urethrostomy for a gap defect and two of these developed erectile dysfunction. Two were referred late to our center and were managed by continent urinary diversion. The rest had a catheter railroaded to maintain alignment of the two urethral ends and delayed repair was done for three patients. One patient in this group had sexual dysfunction while 5 developed a stricture. The only female patient with urethral injury had an open tilt fracture associated with urethral tear. The control group had 7 acetabular fractures, 19 AP compression, 17 lateral compression injuries and 4 vertical shear injuries. Four were managed nonoperatively. None of these had an open fracture. The average time delay between injury and surgery was 2.2 days. We found no significant difference between the study and the control group in the outcome on comparing patients with upper tract and bladder injuries but the urethral injury group had a poorer result in all 5 parameters of the EQ5D. Conclusions: Upper tract and bladder injuries in the context of pelvic trauma can be successfully managed as described, they do not add significant morbidity compared to the control group. In contrast urethral injuries significantly affected the outcome after pelvic fracture in terms of general health and return to normal function. Early management with primary alignment at the time of pelvic stabilisation and a delayed repair if required produced good results. A high index of suspicion and routine retrograde urethrograms would reduce risk of missed or iatrogenic injury. A team approach is required to achieve optimum results

Crescent fracture dislocations are a well-recognised subset of pelvic ring injuries which result from a lateral compression force. They are characterised by disruption of the sacroiliac joint and extend proximally as a fracture of the posterior iliac wing. We describe a classification with three distinct types. Type I is characterised by a large crescent fragment and the dislocation comprises no more than one-third of the sacroiliac joint, which is typically inferior. Type II fractures are associated with an intermediate-size crescent fragment and the dislocation comprises between one- and two-thirds of the joint. Type III fractures are associated with a small crescent fragment where the dislocation comprises most, but not all of the joint. The principal goals of surgical intervention are the accurate and stable reduction of the sacroiliac joint. This classification proves useful in the selection of both the surgical approach and the reduction technique. A total of 16 patients were managed according to this classification and achieved good functional results approximately two years from the time of the index injury. Confounding factors compromise the summary short-form-36 and musculoskeletal functional assessment instrument scores, which is a well-recognised phenomenon when reporting the outcome of high-energy trauma

Aim: To review treatment, results and complications of pelvic ring injuries. Materials & Methods: We reviewed 39 pelvic ring injuries, mean age 37 years, referred to a tertiary unit, with mean follow up 19 months (6 to 60). Data regarding type of fracture, associated injuries, treatment, injury surgery interval, complications and outcome was documented. Results: Vehicular accidents in 21 were the commonest mechanism of injury and 30 had vertical shear fractures. There were 4 associated head injuries, 5 chest, 4 maxillo-facial, 4 perineal/ vaginal tears, 7 urological, 1 anorectal, 2 each of abdominal and ophthalmic, and 1 each of vascular, spine and brachial plexus injuries. Also there were 15 skeletal fractures, 12 soft tissue injuries and 11 associated acetabular fractures of which 8 needed fixation, and 17 had lumbosacral plexus injuries. 6 compound pelvic fractures were treated with debridement, fixation and early life saving bowel diversion. 19 patients had anterior external fixators, 9 were applied elsewhere for resuscitation. Complications: There were 10 systemic complications, 4 ARDS, 2 wound infections and 1 colovesical fistula, 1 infected pubic plate, and 3 late inguinal hernias. 8 patients had pin track infections, and 5 iatrogenic problems including 2 nerve lesions, 2 vascular injuries and 1 bladder rupture, none of which left any residual problem. Results: 20 patients had no pain, 31 were fully mobile without aids, and 22 had returned to original level of activity. 6 complained of sexual dysfunction, and 1 had double incontinence. 6 patients were on disability allowance, and 10 had full recovery of lumbosacral plexus injury. Conclusion: Severe associated injuries and soft tissue trauma significantly affect outcome and complications, inspite of sound bony fixation and healing, and multi-disciplinary management is obligatory. Posterior ring lesions were often underestimated, and anterior external fixation alone can make them worse. Early colostomy is lifesaving in compound pelvic fractures. Early involvement of a specialist surgeon is desirable for optimal outcome, which can be achieved in most patients

Aim. Posttraumatic pelvic-osteomyelitis is one of the most serious complications after pelvic-fractures. The necessary extensive surgical debridement as part of interdisciplinary treatment is complicated by the possible persistence of pelvic instability. The aim of this study was to determine the outcome and outline the course of treatment after early posttraumatic pelvic bone infections due to type-C pelvic ring injuries. Method. In a retrospective cohort study (2005–2015) all patients with pelvic-osteomyelitis within six weeks of surgical stabilization of a type-C pelvic-fracture were assessed. Microbiological results, risk factors, course of treatment and functional long-term outcome using the Orlando-Pelvic-Score were analyzed. Results. A total of 18 patients (age 43.7 years; Body-Mass-Index 27.9 kg/m2; ASA-physical-status 1.8; Injury-Severity-Score 38) developed a pelvic-osteomyelitis within an average of 27 days after internal surgical stabilization of a type-C pelvic injury (AO-type C1: 10, C2: 4, C3: 4). Os pubis was affected in 7 and Os ilium in 11 cases. In addition to the pelvic-fracture, major vascular injuries occurred in 8, nerve injuries in 9, and intestinal and/or bladder ruptures in 11 cases. In 14 cases a mass transfusion was necessary. In addition to clinical signs of inflammation, (10 × redness, 12 × wound secretion, 6 × fistula) elevated levels of c-reactive-protein (7.7 mg/dl) and white-blood-cells (10.5/nl) were found. Bacterial cultures harvested during the initial surgical revision demonstrated mixed cultures in 17/18 cases, with an average of 3 different organisms isolated per case (61% intestinal bacteria). During the scheduled repetitive debridement a reduction of the initial mixed cultures into a single organism was observed. Overall 6.8 surgical interventions, including implant removal, were necessary until osteomyelitis was eradicated. In no cases was re-osteosynthesis performed. In 6/18 cases recurrence of infection occurred after an average of 5 months, followed by an additional repetitive debridement. An average 3-year-follow-up after the initial osteomyelitis-diagnosis demonstrated eradication of infection in 17/18 cases combined with an Orlando-Pelvic-Score of 21.9 points (best possible function: 40 points). Despite significant pelvic malalignment the ability to walk was achieved in all patients, with one exception due to a spinal cord injury. Conclusions. Despite no new surgical stabilization of the initial unstable pelvic injury, the early removal of implants combined with extensive debridement and antibiotic therapy led to sufficient long-term outcomes in patients with early posttraumatic pelvic-osteomyelitis. In particular, due to the severity of the initial injury and the complex interdisciplinary approach, early diagnosis of the osteomyelitis is essential

The aim of this study was to assess the incidence, management and survival of unstable pelvic ring injuries in patient aged 65 years or older. Prospectively kept data was analysed from April 2008 to October 2016. Information regarding the mechanism, fracture type, associated injuries, treatment and complications of the treatment were collected. Annual incidence was calculated and a Kaplan Meier survival analysis for carried out at 30 days, 1 year and 5 years. 404 patient records were available. 125 were 65 years or older (60 males and 65 females). 24 (19%) patients required surgical stabilisation to permit mobilisation the remaining 101 patients, treated conservatively were mobilised with immediate weight-bearing under the supervision of a physical therapist with assistive devices. Mean age was 73.5 years (SD 9.9 yrs). Fracture types were − 61.B2 47(37.6%), 61.B1 24(32%), 61.A2 17(13.6%), 61.C1 16(12.8%), 61.C2 5(4%), 61.A1 2(1.6%) and 61.C3 3(2.4%). Mechanisms of injury included fall from standing height − 41 (32%), road traffic collisions − 46(36.8%), fall from higher than standing height − 10(8%), fall from horse − 6(4.8%), jumped from bridge − 3(2.4%) & others 19(15%). Complications in surgical group included 1 death from PE and 1 wound infection treated with vacuum assisted dressing. Survivorship was 91.7%(30 days), 82.5%(1 year) and 49.7%(5 years). Most common fracture type is 61.B2. Over one third of fractures resulted from low energy mechanism. The majority 81% could be managed conservatively. One-year survival figure closely resembles the fracture neck of femur group, highlighting the frailty of this population

Purpose of study:. The presence of an L5 transverse process fracture is reported in many texts to be a marker of pelvis fracture instability. There is paucity of literature to support this view. Available studies have been performed on patients who were already known to have a pelvis fracture. No study has attempted to document the presence of this lesion in the absence of a pelvis fracture. Primary aim: To identify the correlation between the presence of a L5 transverse process fracture and an unstable pelvic ring injury. Secondary aim: To establish whether a L5 transverse process fracture can occur in the absence of a pelvis fracture. Methods:. We conducted a retrospective review of all CT scans performed in patients who presented to a Level 1 Trauma Unit for blunt abdomino-pelvic trauma between January 1, 2012 and August 28, 2013. A total of 203 patients met our inclusion criteria. Results:. Fifty four of these 203 patients (26%) sustained a pelvis fracture. Of these 54 patients 26 (48%) had an unstable fracture pattern according to the AO classification. Five of these 26 patients (19%) had an associated L5 transverse process fracture. Seven (12%) had an L5 transverse process fracture associated with a stable fracture pattern. Three patients (1.4%) had an isolated L5 transverse process fracture in the absence of a pelvis fracture. Conclusion:. This study confirms the association between the presence of a L5 transverse process fracture and an unstable pelvis fracture pattern. This injury is rarely seen in the absence of a pelvis fracture so its presence should alert the treating clinicians to the existence of a pelvis fracture

Stoppa approach has recently been adapted for pelvic surgery as it allows direct intra-pelvic reduction and fixation of the quadrilateral plate and anterior column. We report our early experience, indications and complications with this exposure introduced in 2010 in our tertiary unit. A Retrospective review of all Stoppa approaches in pelvic-acetabular fixations was performed from a prospectively maintained database. Of the 25 patients, mean age 40 years (range 15–76), who underwent pelvic-acetabular fixation using Stoppa approach, 21 patients had mean follow up of 7.3 months (1–48 months). All except 24% of patients had one or more additional systemic injury some requiring additional surgery. There were 6 acetabular fractures, 13 pelvic ring injuries and 6 combined fractures. Mean injury-surgery interval was 9 days (range 3–20). 8 patients had an isolated Stoppa approach whilst the remaining others also had an additional approach. Mean surgical time was 239 minutes. Anatomical reduction was achieved in 96% (24/25) cases. There was 1 minor intra-operative vascular injury, repaired immediately successfully, and no late wound infections, or other visceral complications. One patient reported new onset sensory numbness which resolved after the first review. Two patients reported erectile dysfunction thought to be caused by the initial injury. One patient had asymptomatic plate loosening. None required revision surgery. Despite the obvious learning curve, we found this approach safe and it did not compromise accuracy of reduction in well selected patients, but early surgery within 10–14 days is recommended to aid optimal reduction

Injuries to the lower urinary tract are well recognized following fractures to the pelvic ring. The overall incidence of pelvic fractures is similar in men and women. However associated urological injuries occur less frequently in women. There are very few reported cases of combined bladder and urethral injury or combined intra- and extraperitoneal bladder rupture in women. Only two cases have been reported describing communication of the hip joint and an extra peritoneal bladder rupture. To our knowledge we are the first to describe a pelvic ring injury complicated by combined intra and extra-peritoneal bladder rupture, urethral injury and direct intraperitoneal communication of the ruptured bladder with a central dislocation of the hip joint. The mechanism of bladder laceration was gross displacement of the quadrilateral plate and pubic rami following acetabular fracture. This bone was found at laparotomy to be lying within the bladder cavity

Various techniques have been used for the fixation of the posterior pelvis, each with disadvantages specific to the technique. In this study, a new protocol involving the placement of posterior pelvic screws in the CT suite is described and evaluated. A total of 66 patients with unstable pelvic ring injuries was stabilised under local anaesthesia with sedation. The mean length of time for the procedure was 26 minutes per screw. There were no technical difficulties or misplaced screws and no cases of infection or nonunion. All patients stated that they would choose to have the CT scan procedure again rather than a procedure requiring general anaesthesia. The charges for the procedure were approximately £1840 ($2800) per operation. CT-guided placement of iliosacral screws is a safe, feasible, and cost-effective alternative to radiologically-guided placement in the operating theatre in selected patients

Introduction. The aim of this study was to evaluate the health quality of life and return to sports activities following pelvic ring injuries. Patients and Methods. Between January 2006–2007 patients treated in our institution with pelvic fractures were eligible to participate. Inclusion criteria were adult patients. Exclusion criteria were children and pathological fractures. Data recorded included demographics, injury mechanism, fracture pattern, Injury severity score (ISS), associated injuries, method of fixation, complications and functional outcome. Health related quality of life was assessed using the (EuroQol) and return to sports activities was evaluated using a return to sports questionnaire. The minimum follow up was 24 months (24–39). Results. Out of 60 patients, 53 (29 male) met the inclusion criteria. The mean age was 43 years (21–63), mean ISS was 25.1 (9–58). There was a significant decrease in quality of life (p<0.0001). The decrease was significant in all 5 EQ5D domains with mobility, usual activities and pain to be most significantly affected, p<0.0001. There was also a significant decrease in sporting activities (p>0.0001), (42 patients reported a decrease; 6 patients performed the same degree of activities and 5 reported an increase (they had the lowest mean ISS of 18 points)). Regression analysis showed lower extremity injury to be a significant risk factor for decreased sporting and physical activity, p> 0.049. Conclusion. Pelvic fracture causes a significant decrease in quality of life and return to sports activities. The presence of a lower limb fracture is a significant risk factor for a reduced sporting activity

Background. Acetabular or pelvic ring injuries are invariably associated with high-energy trauma that could lead to a significant degree of disability. The purpose of this study was to investigate whether patients who had surgical treatment of isolated acetabular or pelvic injuries were able to return to their previous sporting activities. Patients and method. Between January 2001 and January 2002 90 patients were treated in our institution with pelvic (PF) and acetabular (AF) fractures. We excluded 22 of them who had sustained other associated injuries in order to eliminate the potential bias that the associated injuries could have on the results. Demographics, fracture classification, rehabilitation, outcome and complications were documented prospectively. Frequency, level of activity and sports participation before and after surgery, as well as EuroQol (EQ-5D) were also recorded. Results. There were 58 male and 10 female patients, with a mean age of 42 years (16-80) and mean follow-up of 30 months (24-36). 43 out of 53 (81%) patients in AF group and 13 out of 15 patients in PF group (83%) returned to a variable level of sports activity. Significant reduction was observed in those who sustained both column (BC) (p<0.04) and posterior wall (PW) (p<0.0009) fractures in the AF group. Significant reduction in frequency of sports practice was also found in the PW subgroup (p<0.0001). Patients <25 and >40 years of age in PF group and <40 or >65 in AF group had significant reduction in EQ-5D scores in comparison to the normal UK population. Conclusion. The majority of patients returned back to sports activities following surgery. The worst prognosis lies with BC and PW acetabular fractures. Middle aged patients do better as compared to younger or elderly patients in both groups

Objectives. The additive use of an external modular device may improve dorsal compression forces in pelvic external fixation. This would improve the efficiency of indirect reduction and stabilization with an anterior pelvic external fixator. The purpose of this study was to determine the forces of the posterior pelvis achieved by a new device improving the application of a supraacetabular anterior external fixator compared with other constructs. Material and Method. Synthetic pelvic models were used. Complete pelvic ring instability was created by symphyseal and unilateral sacroiliac joint disruption. Four different constructs of fixation were tested. A pressure-sensitive film was placed in the sacroiliac joint. The constructs were applied in a standardized way. The maximum sacroiliacal compression loads (N) of each trial was recorded. Statistics was performed with the student t-test. Results. Standard supraacetabular two-pin external fixator achieved a dorsal compression load of 13.84 (SD 8.13). The new dorsal pelvic compression device delivered 177.05N (SD 32.32) of load across the sacroiliac joint when the pins were inserted half way and 183.58N (SD 46.64) with full pin insertion. Both the half- and full-pin construct demonstrated a significant dorsal load improvement with the pelvic compressor (p<0.05) compared with the standard supraacetabular fixator group. The C-clamp revealed compression forces of 384.88N (SD 22.95), which was significantly greater than all the other groups (p<0.05). Conclusion. We tested a simple and new modular device for improved application of pelvic external fixation. The centres of rotation of supra-acetabular pins were determined and used to achieve greater dorsal compression forces in disrupted pelvic ring injuries. The compression load is less than with a C-Clamp, but significantly greater than the familiar technique of standard external supra-acetabular fixation. This improves the initial stability in acute management of unstable, disrupted and life threatening pelvic ring fractures

Aim: To establish a method of emergency and definitive stabilisation of Type C pelvic ring injuries. Methods: Patients with pelvic ring disruption were treated acutely, using instrumentation developed by Dr. Charles Reinert. Patients were positioned supine on a radiolucent operating table configured to allow the C-arm of an image intensifier to swing through an arc sufficient to allow pelvic inlet and outlet views of the pelvis. The unstable hemipelvis was reduced by means of longitudinal traction on the leg and lateral compression with a spiked, long handled, cannulated guide. Guide wires could be positioned accurately through the guide, allowing accurate placement of AO 7.3 mm cannulated iliosacral screws, by minimally invasive percutaneous techniques. Results: Successful acute biomechanical pelvic stabilisation was achieved in all cases. After a short learning curve, the procedure could be completed in 20 minutes. Discussion: Previously, pelvic stabilisation was often achieved by initial, tentative stabilisation using pelvic slings, traction and external fixation, with or without later definitive fixation. Using minimally invasive techniques, rapid, emergency stabilisation can be achieved, with sufficient stability to equally suffice for definitive fixation. The minimally invasive, percutaneous technique provides greater safety for treatment of patients with early coagulopathy. Conclusions: Acute, rapid and definitive stabilisation of type C pelvic ring disruption can be achieved by minimally invasive, percutaneous techniques using the Reinert instrumentation

Background: Acetabular or pelvic ring injuries are invariably associated with high-energy trauma that could lead to a significant degree of disability. The purpose of this study was to investigate whether patients who had surgical treatment of isolated acetabular or pelvic injuries were able to return to their previous sporting activities. Patients and Methods: Between Jan 2001 to Jan 2002, 68 consecutive patients were treated in our institution with isolated pelvic (PF) or acetabular fractures (AF). Demographics, fracture classification, rehabilitation, outcome and complications were documented prospectively. Frequency, level of activity and sports participation before and after surgery, as well as EuroQol (EQ-5D) was also recorded. Results: There were 58 male and 10 female patients, with a mean age of 42 years (16–80) and mean follow-up 30 months (24–36). 43 out of 53 (81%) patients in AF group and 13 out 15 patients in PF group (83%) returned to a variable level of sports activity. Significant reduction in the level of activity was observed in those who sustained both column (BC) (p< 0.04) and posterior wall (PW) (p< 0.0009) fractures in the AF group. Significant reduction in frequency of sports practice also found in PW subgroup (p< 0.0001). Patients < 25 and > 40 years of age in PF group and < 40 or > 65 in AF group had significant reduction in EQ-5D scores in comparison to normal UK population. Conclusion: The majority of patients returned back to sports activities following surgery. The worst prognosis lies with BC and PW acetabular fractures. Middle age patients do better comparing to younger or elderly patients in both groups

Aims: To determine the incidence and pattern of sexual dysfunction in patients with displaced pelvic ring injuries treated surgically. To investigate a link between sexual and urological dysfunction. Methods: All patients with pelvic ring fractures treated surgically were contacted by a postal questionnaire. Sexual function was assessed using elements of the validated Sexual Function Questionnaire. Patients were also asked specifically about new-onset sexual and urological dysfunction. Injuries were classified using the Young and Burgess (YB) classification. Results: There was a response rate of 85% (151 of 178 patients). Average age at injury was 40 yrs (16–74 yrs). Average follow up was 5.3yrs (1–12 yrs). 72% were male. 31% were Antero-Posterior Compression (APC) injuries, 37% Lateral Compression (LC) injuries and 32% Vertical Shear (VS) injuries. 32% of all patients reported significant new sexual problems (36% of males and 24% of females). Of the males, 31% reported erectile dysfunction (12% absolute impotence), 32% reported decreased arousal and 21% reported ejaculatory problems. Of the females, 16% reported decreased arousal, 5% reported anorgasmia and 3% reported painful orgasms. There were no reported cases of dyspareunia in the female patients. 41% of APC, 15% of LC and 39% of VS injuries reported significant new sexual problems (p=0.02, Chi-squared test). There was a 12% prevalence of significant new urological dysfunction in the entire cohort, with 27% of those with sexual dysfunction also reporting urological dysfunction. This compares with a 5% prevalence of urological dysfunction in patients without sexual dysfunction (p< 0.0001, Chi-squared test). Conclusions: This large outcome study of UK patients illustrates the significant prevalence of new onset sexual dysfunction in patients with surgically treated pelvic ring fractures. The results also suggest an association between sexual and urological dysfunction. This can help give prognostic information to patients and plan service provision

Aims: Various techniques for the þxation of the posterior pelvis have been used, each demonstrating drawbacks speciþc to the technique. In this study, a new protocol was described and evaluated, involving the placement of posterior pelvic screws in the computed tomography (CT) room. Methods: Between September 2001 and September 2002, sixteen patients with unstable pelvic ring injuries were stabilized with iliosacral screws under the CT guided technique, using only local anesthesia and conscious sedation. Patients with displaced fractures initially had their anterior lesion addressed with ORIF or external þxation. The posterior lesion was assessed again and if satisfactorily reduced was treated with the CT guided procedure. In addition to routine demographic data, we evaluated patient pain using an analog scale (0–10), time required per screw, radiation dosage, amount of local anesthesia and sedation required, complications, adequacy of fracture reduction and healing, and accuracy of screw placement. Results: In 16 patients we used 22 screws. The time for the procedure averaged 36 minutes per screw. There were no technical difþculties, logistical problems, or misplaced screws in any patient. There were no infections or non-unions. During ofþce follow up, all patients stated that they would choose to have the CT scan procedure again versus an operating room procedure requiring general anesthesia. Conclusion: CT guided placement of iliosacral screws is a safe, feasible, and alternative to ßuoroscopy guided placement in the operating room in selected cases

We investigated whether lateral compression type I injuries of the pelvic ring are inheritably mechanically stable. Between January 2005 to January 2007 all consecutive admissions of a tertiary referral center for pelvic ring reconstruction with a LC I injury pattern were eligible for inclusion. Exclusion criteria were other patterns of pelvic ring injuries. All patients underwent radiological assessment including AP pelvis, inlet/outlet views and CT. Patient demographics, mechanism of injury, other associated injuries, ISS, length of hospitalisation, type of operation, mode of mobilization, preoperative and postoperative visual analogue score pain VAS and follow up until fracture union were prospectively documented. Mechanical stability of the pelvic ring was assessed in the operating theatre under general anaesthesia. Instability was defined as displacement > 2 cm of the anterior or posterior elements. The minimum follow up was 12 months. Of 210 patients admitted with pelvic fractures, 40 fulfilled the inclusion criteria (LC1 type). There were 23 female 17 male and with a mean age of 33.5 (range 18–68). The mean ISS was 10 (range 9–19). 23 patients (group 1) were found to have more than 2 cm rotational displacement during EUA and were stabilised with SI screws posteriorly and a combination of retro-pubic screws, external fixator or plating anteriorly. 17 patients (group 2) exhibited minimal displacement less than 5mm and were not stabilised. Rotational instability > 2cm was characterised by complete fracture of the sacrum posteriorly. Stabilisation of the pelvic ring in group I was associated with a significant reduction of the VAS within 72 hours from surgery, early ambulation and discharge from the hospital. This study supports the view that not all LCI fracture patterns are mechanically stable. Examination under anaesthesia of the pelvic ring can assist the clinician in the decision making progress

Introduction: Pelvic ring injuries represent a complex injury pattern and sometimes have significant consequences. The aim of this retrospective study is to delineate the indications of surgical treatment with emphasis in the anatomic reconstruction. Materials and Methods: 85 patients with pelvic ring fracture with or without acetabular fracture reviewed retrospectively. The average patient age was 34 years. Operative treatment was provided to 26 patients. Six isolated acetabular fractures were treated by ORIF. Twenty pelvic ring fractures were treated, by anterior Ex-Fix in five cases, Ex-Fix plus sacroiliac screws in three, anterior reconstruction plate plus sacroiliac screws in two, anterior plate plus sacral bars in three. The remaining seven patients with an additional acetabular fracture treated with anterior plate for the pelvis and plates for the acetabulum. Results: All the acetabular fractures were anatomically reduced. All fractures consolidated and no patient has developed hip AVN or post-traumatic arthritis. Brooker’s grade III ossifications complicated two patients. Partial neurological deficit of sciatic nerve was seen in three cases of acetabular fractures that improved spontaneously. A case of vertical shearing sacral fracture through the foramina presented with lumbosacral plexus paresis that recovered near normal function in 6 months. Deep infection complicated a case that subsided at 2 weeks on antibiotics and serial surgical debridement. Conclusions: The strict application on rational criteria and an exquisite surgical technique caring of the soft tissues produce satisfactory outcome of these injuries. The above-described surgical treatment shortens the hospital stay and allows early physiotherapy to restore function

Aim: To investigate whether lateral compression type I injuries of the pelvic ring are inheritably mechanically stable. Patients and Methods: Between January 2005 to January 2007 all consecutive admissions of a tertiary referral center for pelvic ring reconstruction with a LC I injury pattern were eligible for inclusion. Exclusion criteria were other patterns of pelvic ring injuries. All patients underwent radiological assessment including AP pelvis, inlet/outlet views and CT. Patient demographics, mechanism of injury, other associated injuries, ISS, length of hospitalisation, type of operation, mode of mobilization, preoperative and postoperative visual analogue score pain VAS and follow up until fracture union were prospectively documented. Mechanical stability of the pelvic ring was assessed in the operating theatre under general anaesthesia. Instability was defined as displacement > 2 cm of the anterior or posterior elements. The minimum follow up was 12 months. Results: Out of 210 patients admitted with pelvic fractures, 40 fulfilled the inclusion criteria (LC1 type). There were 23 female 17 male and with a mean age of 33.5 (range 18–68). The mean ISS was 10 (range 9–19). 23 patients (group 1) were found to have more than 2 cm rotational displacement during EUA and were stabilised with SI screws posteriorly and a combination of retropubic screws, external fixator or plating anteriorly. 17 patients (group 2) exhibited minimal displacement less than 5mm and were not stabilised. Rotational instability > 2cm was characterised by complete fracture of the sacrum posteriorly. Stabilisation of the pelvic ring in group I was associated with a significant reduction of the VAS within 72 hours from surgery, early ambulation and discharge from the hospital. Conclusion: This study supports the view that not all LCI fracture patterns are mechanically stable. Examination under anaesthesia of the pelvic ring can assist the clinician in the decision making progress

Summary. Application of RSA in supine and standing positions allows pelvic fracture stability to be measured more accurately than current techniques. RSA may enable a better understanding of these injuries. Introduction. The in vivo stability of the pelvic ring after fracture stabilisation remains unknown. Plain radiographs have a low accuracy in diagnosing loss of fracture reduction over time. Radiostereometric analysis (RSA) is an accurate imaging measurement method that has previously been applied to measure the healing of other fractures. This pilot study investigated the potential application of RSA in supine and standing positions to measure pelvic fracture stability over time and under weightbearing load. Methods. Five patients with a similar type C pelvic ring disruption who were all operated on using the same surgical technique and had RSA markers inserted at the time of surgery. All five patients had a unilateral comminuted sacral fracture lateral to the sacral foramina treated with posterior plating and pubic rami fractures stabilised by external fixation for six weeks. All patients were mobilised partial weight bearing after regaining leg control. RSA examinations at 2, 4, 12, 26 and 52 weeks included three radiographic pairs taken in supine, standing and supine positions at each time point. Two additional RSA examinations were performed the day prior and post pin removal at 6 weeks. Results. All patients ambulated before the 2 week follow-up and progressed uneventfully. At latest follow-up, there were no complications. Minimal displacements (translations less than 0.3mm and rotations less than 0.5°) were recorded between the supine exams pre and post standing at 2 weeks. Hence, the supine examination was found to be a reliable position to measure the migration of the ilium over time. No loss of reduction was identifiable on plain radiographs over time. At 52 weeks, in contrast to plain radiographic results, RSA measurements revealed that one patient had a fracture migration greater than 4mm. Such large displacements could result in sacral nerve root transection, leading to devastating consequences, such as incontinence, for patients whose sacral fractures are through or medial to the sacral foramina. In one patient, the migration recorded for the apparent uninjured posterior complex side exceeded the migration of the injured side suggesting an unrecognised bilateral injury. Comparative RSA examinations pre and post external fixator removal demonstrated that in three patients the injured hemipelvis migrated greater than 2mm after the removal of the external fixator, which may be indicative that the fixator was removed prematurely. Discussion and Conclusion. The application of RSA allows accurate measurement of pelvic fracture stability which is difficult, if not impossible, to identify and quantify with any other imaging techniques. Hence, RSA has the capacity to enable a better understanding of pelvic ring injuries and optimise their treatment