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Orthopaedic Proceedings
Vol. 103-B, Issue SUPP_3 | Pages 56 - 56
1 Mar 2021
Schneider P Thoren J Cushnie D Del Balso C Tieszer C Sanders D
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Flexible fixation techniques combined with anatomic (open) syndesmosis reduction have demonstrated improved functional outcomes and rates of malreduction. Suture-button devices allow physiologic motion of the syndesmosis without need for implant removal, which may lower the risk of recurrent syndesmotic diastasis. There is limited longer-term assessment of the maintenance of reduction between static and flexible syndesmotic fixation using bilateral ankle CT evaluation. This is an a priori planned subgroup analysis of a multi-centre, randomized clinical trial comparing static syndesmosis fixation (two 3.5 mm screws) with flexible fixation (single knotless Tightrope) for patients with AO- OTA 44-C injuries. Patients who completed bilateral ankle CT scans at 3- and 12-month follow-up were included. The primary outcome measure was syndesmotic malreduction based on bilateral ankle CT scans, using the uninjured, contralateral ankle as a control. Anterior (ASD), middle (MSD), and posterior (PSD) syndesmosis distance were calculated to measure syndesmosis reduction. Secondary outcomes included re-operation, adverse events and functional outcomes including the EQ5D, Olerud-Molander Ankle Score (OM), Foot and Ankle Disability Index (FADI), and Work Productivity Activity Impairment Questionnaire (WPAI). Paired samples t-tests were used to compare injured to control ankles (R, v 3.5.1). 42 patients (24 Group S, 18 Group T) were included. ASD for Group T was 5.22mm (95%CI 4.69–5.77) at 3 months compared to 4.26mm (95%CI 3.82–4.71; p=0.007) in controls and 5.38mm (95%CI 4.72–6.04) at 12 months compared to 4.44mm (95%CI 3.73–5.16; p=0.048) in controls. ASD for Group S was 4.63mm (95%CI 4.17– 5.10) at 3 months compared to 4.67mm (95%CI 4.24–5.10; p=0.61) in controls, but significantly increased to 5.73mm (95%CI 4.81–6.66) at 12 months compared to 4.65mm (95%CI 4.15–5.15; p=0.04) in controls. MSD results were similar; Group T had a larger MSD than control ankles at 3 months (p=0.03) and 12 months (p=0.01), while the MSD in Group S was not different at 3 months (p=0.80) but increased at 12 months (p=<0.01). 88% (21/24) of Group S had broken or removed screws by 12 months. Unplanned re-operation was 15% in Group S and 4% in Group T (p=0.02), with an overall re-operation rate of 30% in Group S. There was no significant difference between treatment groups for EQ-5D, OM, FADI or WPAI at 3- or 12-month follow-up. Tightrope fixation resulted in greater diastasis of the ASD and MSD compared to contralateral, uninjured ankles at 3- and 12-months post-fixation. Group S initially had syndesmotic reduction similar to control ankles, but between 3- and 12-months post-fixation, there was significantly increased syndesmosis diastasis compared to controls. The majority of Group S (88%) had either broken screws or scheduled screw removal, which may explain the increased tibio-fibular diastasis seen at 12-months


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XXXII | Pages 3 - 3
1 Jul 2012
Bonner T Eardley W Newell N Masouros S Gibb I Matthews J Clasper J
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Circumferential pelvic binders have been developed to allow rapid closure of the pelvic ring in unstable fracture patterns. Despite evidence to support the use of pelvic binders, there is a paucity of clinical data regarding the effect of binder position on symphyseal diastasis reduction. All patients presenting to the UK's military hospital in Afghanistan who survived and underwent pelvic radiography were reviewed. Cases were identified by retrospective assessment of all digital plain pelvic radiographs performed between January 2008 and July 2010. All radiographs and CT images were assessed to identify the presence of any pelvic fracture. Patients were grouped into three categories according to the vertical level of the buckle: superior to the trochanters (high), inferior to the trochanters (low) and at the level of the trochanters (troch). Diastasis reduction was measured in patients with Anterior-Posterior Compression (APC) grades II and III, or Combined Mechanical Injuries(CMI). Comparison of diastasis reduction between the high and troch groups was assessed by an independent samples Student's t-test. We identified 172 radiographs where the metallic springs in the buckle of a SAM Pelvic Sling. ™. were clearly visible. The binders were positioned at the trochanteric level in 50% of radiographs. A high position was the commonest site of inaccurate placement (37%). In the patients with fractures and an open diastasis, the mean pelvic diastasis gap was 2.75 times greater in the high group compared to the trochanteric level (mean difference 22 mm) (p < 0.01). Application of pelvic binders superior to the greater trochanters is commonplace and associated with inadequate fracture reduction, which is likely to delay cardiovascular recovery in these significantly injured casualties


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XXXIX | Pages 64 - 64
1 Sep 2012
Mukhopadhyay S Metcalfe A Guha A Mohanty K Hemmadi S Lyons K O'Doherty D
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Introduction. Previous studies have demonstrated the need of accurate reduction of ankle syndesmosis. Measurement of syndesmosis is difficult on plain radiographs. Recently, a difference of 2mm in anterior and posterior measurements at incisura of the inferior tibio-fibular joint on CT has been described as a measure of malreduction (depicted as ‘G’ for ease of description). Our practice changed towards routine post operative bilateral CT following syndesmosis fixation to assess the reduction and identify potential problems at an early stage. The aim of this primarily radiological study was to determine if the use of bilateral cross sectional imaging brings additional benefit above the more conventional practice of unilateral imaging. Method. Between 2007 and 2009, nineteen patients with ankle fractures involving the syndesmosis were included in the study group who had bilateral CT post operatively. The values of ‘G’ and the mean diastasis (MD) were calculated, representing the average measurement between the fibula and the anterior and posterior incisura. Results. When compared to the normal side, eight out of nineteen (42%) cases were found to have a residual diastasis even after fixation across the syndesmosis, However, if a standard value of G(2mm) was used for the injured leg only, all of the nineteen cases would have abnormal values of ‘G’ following reduction. The value of G for the injured side was poorly correlated with the mean inter-limb diastasis (MD, R=0.23). Discussion. Our study has clearly demonstrated the need for individualising the assessment method to guide surgeons and radiologists prior to revision surgery. A standard value of ‘G’ of 2mm as the normal limit cannot be applied universally as apparent from the data presented in this study


Orthopaedic Proceedings
Vol. 96-B, Issue SUPP_18 | Pages 28 - 28
1 Dec 2014
Naikoti KK Sylvan A WynnJones H Shah N Clayson A
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The radiological evidence of implant failure following plate fixation of traumatic pubic symphysis diastasis can be up to 75%. We report the complications following symphyseal double orthogonal plating in patients with pubic symphysis diastasis over a period of 2.5 years. Patient records and radiographs of 38 consecutive patients were reviewed with mean follow up of 12.5 months. 5 patients (13%) had radiological evidence of implant failure with one patient (2.6%) requiring revision surgery. There was no evidence of wound complications. We conclude that our lower rate of revision surgery and metal work failure is attributed to double orthogonal plating


Orthopaedic Proceedings
Vol. 97-B, Issue SUPP_7 | Pages 23 - 23
1 May 2015
Dahill M McArthur J Acharya M Ward A Chesser T
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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


Orthopaedic Proceedings
Vol. 96-B, Issue SUPP_18 | Pages 12 - 12
1 Dec 2014
Sonanis S Kumar S Bodo K Deshmukh N
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Tunning fork lines (TFL) were drawn on ankle anterior-posterior radiographs to assess the talar shift in ankle fractures. A 3-D ankle joint reconstruction was prepared by mapping normal ankle joint using auto CAD in 1997. TFL were drawn using normal anatomical landmarks on saggital, coronal and transverse planes. The ankle joint anatomical relationship with talus was studied in various rotation simulating radiographic anterior-posterior views and talar shift was studied. Between 2006 and 2012 on antero-posterior view of ankle radiographs and PACS, TFL were drawn. The premise is that in a normal radiograph the superior-lateral dome of the talus lies medial to the handle of TFL, and in ankle with talar shift the dome of the talus would cross this line laterally. In two district hospitals 100 radiographs were observed by 4 observers in 67 males and 33 females with mean age of 49 (15–82) years. The TFL confirmed talar shift with sensitivity of 99.2 % showing talarshift and inferior tibio-fibular ankle diastasis. We conclude that in ankle anterio-posterior view it is possible to comment on the talar shift and diastasis of the ankle joint, even if proper ankle mortise views were not available


Orthopaedic Proceedings
Vol. 95-B, Issue SUPP_1 | Pages 10 - 10
1 Jan 2013
Sonanis S Kumar S Saleeb H Deshmukh N
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Tunning fork lines (TFL) were drawn on ankle anterior-posterior radiograph to assess the talar shift. A 3-D ankle joint reconstruction was prepared by mapping normal ankle joint using auto CAD in 1997. Tunning fork lines were drawn using normal anatomical landmarks on saggital, coronal and transverse planes. The ankle joint anatomical relationship with talus was studied in various rotation simulating radiographic anterior-posterior views and talar shift was studied. Between 2006 and 2012 on antero-posterior view of ankle radiographs and PACS, ‘Tunning Fork Lines’ (TFL) were drawn. The superior two vertical lines of the TFL were drawn above the ankle joint perpendicular to the distal tibial articular surface. First line tangent to anterior lip of the inferior tibio-fibular joint and second line tangent to the posterior lip of the inferior tibio-fibular joint parallel to each other. The horizontal third line was drawn parallel to distal tibial articular surface perpendicular to first two lines connecting them. The fourth line (handle of the tunning fork) was drawn vertically below the ankle joint midway between the first two lines perpendicular to the third line. In a normal radiograph the superior-lateral dome of the talus lies medial to the handle of TFL, and in ankle with talar shift the dome of the talus crosses this line laterally. In two district hospitals 100 radiographs were observed by 4 observers in 67 males and 33 females with mean age of 49 (15–82) years. The TFL confirmed talar shift with sensitivity of 99.2 % showing talarshift and inferior tibio-fibular ankle diastasis. We conclude that in ankle anterio-posterior view it is possible to comment on the talar shift and diastasis of the ankle joint if proper ankle mortise view is not available


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XXXIX | Pages 191 - 191
1 Sep 2012
Foote J Berber O Datta G Bircher M
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Introduction. Haemodynamically compromised patients with biomechanically unstable pelvic fractures need reduction of the pelvic volume to effect tamponade of bleeding bone and vessels. Knee binding, to help achieve this, is advocated in standard Advanced Trauma and Life Support teaching but is rarely used. There are no reports in the literature as to the benefits derived from this simple manoeuvre. The aim of this study was to investigate whether there was an effect on symphysis pubis closure by binding the knees together and to quantify this. Methods. 13 consecutive patients who underwent open reduction and internal fixation of pubic symphysis diastasis +/− sacroiliac joint fixation were recruited prospectively. These patients were transferred from peripheral hospitals to this National tertiary referral level 1 trauma centre for definitive pelvic fracture management. All patients had sustained Antero-Posterior Compression (APC) type pelvic injuries. In theatre, a centred antero-posterior (AP) radiograph was taken without any form of binding on the pelvis. A second AP radiograph was then taken with the knees and ankles held together with the hips internally rotated. A third, final AP radiograph was taken post fixation. Measurements of symphysis pubis widening were made of the digital images taken in theatre. Results. The study population included 11 men and 2 women. The mean age was 46. The average percentage closure of symphysis following knee binding in relation to the final reduced symphysis, post fixation was 69%. Conclusion. Our impression is that this manoeuvre is rarely employed on patients with these types of injury. This is the first study to quantify the effects of this simple manoeuvre. Emergency measures to reduce the pelvic volume and thus limit pelvic haemorrhage are well recognised. We have shown that this simple measure is a useful adjunct and that it has a measurable effect on reducing pubic diastasis


Orthopaedic Proceedings
Vol. 96-B, Issue SUPP_18 | Pages 9 - 9
1 Dec 2014
Aranganathan S Carpenter C Thomas D Hemmadi S O'Doherty D
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Complex congenital foot deformities pose a challenge to the surgeon due to poor results after extensive surgery. We report the clinical outcomes of children with complex congenital foot deformities treated with UMEX® (Universal mini-external fixator System) frames. This is a prospective review of our experience in patients treated in this way, from 2004 to 2011. The indications for treatment included resistant/recurrent Congenital Talipes Equino Varus (CTEV), cavo-varus deformity secondary to Charcot-Marie-Tooth disease, arthrogryposis, fibular hemimelia and other congenital abnormalities. A total of 32 children (35 feet) have been treated, out of which 22 were male and 10 were female patients. Age at surgery ranged from 3 to 15 years (median age – 7 years). Three patients underwent bilateral procedures; the reminder (29 patients) underwent unilateral foot operations. Twenty-eight patients had undergone previous surgery including soft-tissue and/or bony corrective procedures. The frames were removed at an average of 69 days after application, and the patients spent a further 6 weeks in a walking cast. Good functional outcomes were noted in 26 patients in the first postoperative year and in 19 patients in the fifth postoperative year. Further operations were needed in 10 patients. Complications occurred in 10 patients, predominantly pin-site infections and 1 case of bony overgrowth at pin-site and 1 of proximal tibio-fibular diastasis. This is a simple fixator to use with a short learning curve. In groups of patients with complex congenital abnormalities, we achieved good functional outcome with low-complication rates


Orthopaedic Proceedings
Vol. 95-B, Issue SUPP_9 | Pages 16 - 16
1 Feb 2013
Aranganathan S Carpenter C Thomas D Hemmadi S O'Doherty D
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We report the clinical outcomes of children with complex congenital foot deformities treated with UMEX® mini-external fixators. This is a prospective review of our experience in patients treated in this way, from 2004. The indications for treatment were resistant/recurrent Congenital Talus Equina Varus(CTEV), cavo-varus deformity secondary to Charcot-Marie-Tooth disease, arthrogryposis, fibular hemimelia and other congenital abnormalities. In addition, one patient underwent this treatment since he was allergic to casting material. A total of 32 children (35 feet) have been treated, with a male to female ratio of 22:10 respectively. The patient-age at operation ranged between 3 and 15 years (median age −7 years). Three patients underwent bilateral procedures and 29 patients underwent unilateral foot operations. Twenty-eight patients underwent previous soft-tissue and bony corrective operations with serial casting. The frames were removed at an average of 69 days after application with a further 6 weeks in a walking cast. Seventy-nine percent of the patients had good functional outcome. Further operations were needed in 10 patients. Complications occurred in 10 patients, including pin-site infections, bony overgrowth at pin-site and proximal tibio-fibular diastasis. In conclusion, this is a simple fixator to use with a small learning curve. In groups of patients with complex congenital abnormalities, we achieved good functional outcome with low-complication rates


Orthopaedic Proceedings
Vol. 95-B, Issue SUPP_1 | Pages 3 - 3
1 Jan 2013
Gill I Shafafy R Park D Gougoulias N Halliwell P
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Introduction. Lisfranc joint injuries account for only 0.2% of all fractures but early diagnosis improves the chances of a better outcom]. Radiographic signs, such as diastasis (>2mm) of the 1–2 interspace, are subtle and. often missed, leading to a poorer outcome. We present a new radiographic sign, less likely to result in missed diagnoses. Null nypothesis: The intermetarsal angle remains unchanged in Lisfranc injuries. Method. A series of radiographs demonstrating Lisfranc injury were interspersed with normal and postoperative cases. Evidence of fixation was obscured. A selection of Foundation and Core Trainee medical staff measured the intermetatarsal angle (IMA) on two separate occasions. The measuring technique was demonstrated with no explanation for the reason behind the measurement. Results. The intra-class correlation (ICC) between observers was 0.96 and a mean 0.86 (range 0.69–0.96) for individual observers. IMA on comparative weight bearing AP views of injured and normal side, using Wilcoxon-signed rank test demonstrated a P< 0.0001 with mean values of 6.6 degrees (normal) versus 4.85 degrees (injured) and standard deviation of 1.97 & 1.91 degrees respectively. Conclusion. The high ICC value suggests that this radiographic sign is easily taught, reliable and reproducible. Analysis of individual angles suggests that there is a significant difference between the normal and pathological IMA. We therefore reject our null hypothesis. The data supports our proposition that that the IMA becomes more parallel in Lisfranc injuries and that this is an easily recognised sign, which could help reduce the incidence of missed injuries. Elucidation of the exact anatomical pathology responsible is the basis for further, anatomical, studies


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XXXVIII | Pages 51 - 51
1 Sep 2012
White NJ Raskolnikov D Swart E Rosenwasser MP
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Purpose. Although multiple surgical options exist for chronic static scapholunate dissociation, no single procedure has been found to be superior clinically or kinematically. We hypothesize that the reduction and association of the scaphoid and lunate (RASL procedure) is a safe and effective procedure that improves function and alleviates pain in the injured wrist. The purpose of this study is to report long-term follow-up of patients undergoing the RASL procedure over a 20-year period. Method. Between December 1991 and September 2008, the senior author performed 36 RASL procedures for chronic static scapholunate dissociation. This reconstruction involves reduction of the rotational deformity and diastasis between the scaphoid and lunate through a dorsal approach to the wrist. Maintenance of reduction is accomplished with a cannulated, headless, smooth-shafted compression screw directed from the scaphoid to the lunate along the anatomic axis of rotation between the two bones. For the purposes of this study, patients were evaluated by visual analog pain scale (VAS), Disability of the Arm, Shoulder and Hand questionnaire (DASH), SF-36 health survey, physical examination and radiographs. Results. Thirty-two of 36 patients were available for questionnaires and 23 available for questionnaires and physical examination, with an average time to final follow-up of 6.2 years post-operatively. The mean DASH score was 16.6, and other patient-based outcomes showed similarly favorable results. Range of motion was well preserved with 80% of the contralateral flexion-extension arc being maintained in those available for physical examination. Grip strength was well preserved at 90% of the contralateral side. X-rays showed significant decreases in scapholunate gap (p < 0.001) and scapholunate angle (p < 0.001) as compared to preoperative films. In the 32 patients followed, there were 2 treatment failures going on to have salvage procedures for progression to scapholunate advanced collapse deformities. These patients were included in the final analysis. Conclusion. The RASL procedure is a safe and effective treatment for chronic static scapholunate dissociation. It re-aligns the scaphoid and lunate, restores function, reduces pain, and appears to be robust over time