Aims. The purpose of this study was to assess the reliability and responsiveness to hip surgery of a four-point modified Care and Comfort Hypertonicity Questionnaire (mCCHQ) scoring tool in children with cerebral palsy (CP) in Gross Motor Function Classification System (GMFCS) levels IV and V. Methods. This was a population-based cohort study in children with CP from a national surveillance programme. Reliability was assessed from 20 caregivers who completed the mCCHQ questionnaire on two occasions three weeks apart. Test-retest reliability of the mCCHQ was calculated, and responsiveness before and after surgery for a displaced hip was evaluated in a cohort of children. Results. Test-retest reliability for the overall mCCHQ score was good (intraclass correlation coefficient 0.78), and no dimension demonstrated poor reliability. The surgical intervention cohort comprised ten children who had preoperative and postoperative mCCHQ scores at a minimum of six months postoperatively. The mCCHQ tool demonstrated a significant improvement in overall score from preoperative assessment to six-month postoperative follow-up assessment (p < 0.001). Conclusion. The mCCHQ demonstrated responsiveness to intervention and good test-retest reliability. The mCCHQ is proposed as an outcome tool for use within a national surveillance programme for children with CP. Cite this article: Bone Jt Open 2023;4(8):580–583

Aims. In UK there are around 76,000 hip fractures occur each year 10% to 15% of which are undisplaced intracapsular. There is considerable debate whether internal fixation is the most appropriate treatment for undisplaced fractures in older patients. This study describes cannulated hip screws survivorship analysis for patients aged ≥ 60 years with undisplaced intra-capsular fractures. Methods. This was a retrospective cohort study of consecutive patients aged ≥ 60 years who had cannulated screws fixation for Garden I and II fractures in a teaching hospital between March 2013 and March 2016. The primary outcome was further same-side hip surgery. Descriptive statistics were used and Kaplan-Meier estimates calculated for implant survival. Results. A total of 114 operations were performed on 112 patients with a mean age of 80.2 years (SD 8.9). The 30-day and one-year mortality were 1% (n = 1) and 13% (n = 15), respectively. Median follow-up was 6.6 years (interquartile range 6.0 to 7.3). Kaplan-Meier estimates showed a survivorship of 95% at one year and 90% at five years (95% confidence interval 84% to 95%) for cannulated screws. Nine patients underwent further hip surgery: four revision to total hip arthroplasty, one revision to hemiarthroplasty, three removals of screws, and one haematoma washout. Posterior tilt was assessable in 106 patients; subsequent surgery was required in two of the six patients identified with a posterior angle > 20° (p = 0.035 vs angle < 20°). Of the 100 patients with angle < 20°, five-year survivorship was 91%, with seven patients requiring further surgery. Conclusion. This study of cannulated hip screw fixation for undisplaced fractures in patients aged ≥ 60 years reveals a construct survivorship without further operation of 90% at five years. Cannulated screws can be considered a safe reliable treatment option for Garden I and II fractures. Caution should be taken if posterior tilt angle on lateral view exceeds 20°, due to a higher failure rate and reoperation, and considered for similar management to Garden III and IV injuries. Cite this article: Bone Jt Open 2022;3(3):182–188

Aims. This study aimed to develop and validate a fully automated system that quantifies proximal femoral bone mineral density (BMD) from CT images. Methods. The study analyzed 978 pairs of hip CT and dual-energy X-ray absorptiometry (DXA) measurements of the proximal femur (DXA-BMD) collected from three institutions. From the CT images, the femur and a calibration phantom were automatically segmented using previously trained deep-learning models. The Hounsfield units of each voxel were converted into density (mg/cm. 3. ). Then, a deep-learning model trained by manual landmark selection of 315 cases was developed to select the landmarks at the proximal femur to rotate the CT volume to the neutral position. Finally, the CT volume of the femur was projected onto the coronal plane, and the areal BMD of the proximal femur (CT-aBMD) was quantified. CT-aBMD correlated to DXA-BMD, and a receiver operating characteristic (ROC) analysis quantified the accuracy in diagnosing osteoporosis. Results. CT-aBMD was successfully measured in 976/978 hips (99.8%). A significant correlation was found between CT-aBMD and DXA-BMD (r = 0.941; p < 0.001). In the ROC analysis, the area under the curve to diagnose osteoporosis was 0.976. The diagnostic sensitivity and specificity were 88.9% and 96%, respectively, with the cutoff set at 0.625 g/cm. 2. . Conclusion. Accurate DXA-BMD measurements and diagnosis of osteoporosis were performed from CT images using the system developed herein. As the models are open-source, clinicians can use the proposed system to screen osteoporosis and determine the surgical strategy for hip surgery. Cite this article: Bone Joint Res 2023;12(9):590–597

The primary treatment goal for patients with femoroacetabular impingement syndrome, a common hip condition in athletes, is to improve pain and function. In selected patients, in the short term following intervention, arthroscopic hip surgery is superior to a pragmatic NHS- type physiotherapy programme. Here, we report the three-year follow-up results from the FemoroAcetabular Impingement Trial (FAIT), comparing arthroscopic hip surgery with physiotherapy in the management of patients with femoroacetabular impingement (FAI) syndrome. Two-group parallel, assessor-blinded, pragmatic randomised controlled study across seven NHS England sites. 222 participants aged 18 to 60 years with FAI syndrome confirmed clinically and radiologically were randomised (1:1) to receive arthroscopic hip surgery (n = 112) or physiotherapy and activity modification (n = 110). We previously reported on the hip outcome score at eight months. The primary outcome measure of this study was minimum Joint Space Width (mJSW) on Anteroposterior Radiograph at 38 months post randomisation. Secondary outcome measures included the Hip Outcome Score and Scoring Hip Osteoarthritis with MRI (SHOMRI) score. Minimum Joint Space Width data were available for 101 participants (45%) at 38 months post randomisation. Hip outcome score and MRI data were available for 77% and 62% of participants respectively. mJSW was higher in the arthroscopy group (mean (SD) 3.34mm (1.01)) compared to the physiotherapy group (2.99mm (1.33)) at 38 months, p=0.017, however this did not exceed the minimally clinically important difference of 0.48mm. SHOMRI score was significantly lower in the arthroscopy group (mean (SD) 9.22 (11.43)) compared to the physiotherapy group (22.76 (15.26)), p-value <0.001. Hip outcome score was higher in the arthroscopy group (mean (SD) 84.2 (17.4)) compared with the physiotherapy group (74.2 (21.9)), p-value < 0.001). Patients with FAI syndrome treated surgically may experience slowing of osteoarthritisprogression and superior pain and function compared with patients treated non- operatively

Young patients undergoing THA or hip used. HOS and iHOT33 have demonstrated to be useful in hip preservation surgery but never used in THA. The aim of the study was to evaluate long-term clinical outcomes with HOS and iHOT33 in hip arthroscopy and THA. We conducted a retrospective study with prospective data collection of 118 consecutive young patients (<65 y.o.) between 2008 to 2012 who underwent hip arthroscopy or THA. The mean follow-up was 12.05 years. All surgeries were done by the same senior surgeon. PROMs used were iHOT-33 and HOS preoperatively, at one year and 10 years. SPSS Statistics Grad Pack 28.0 software was used for statistical analysis. Arthroscopy Group (57 patients): Mean age 35.36 years. 55.93% were male. iHOT33 mean differential improvement was 24.43 at 1 year, 70,17% exceed MCID and 49,1% SCB. HOS mean differential improvement was 16.26 at one year. 54,38 % patients exceed MCID and 49,36% SCB. At 10 years, iHOT33 mean differential improvement was 14,36 and 12.56 for HOS. Regarding complications, 3 patients underwent THA (5.26%) and 10 (17.54%) continued with groin pain. THA Group (61 patients): Mean age 52,54 years. 55.73% were male. Cementless THA was used in all patients with ceramic on ceramic used in 77%. iHOT33 mean differential improvement was 41,57 at 1 year. 95,08% patients exceed MCID and 85,25% SCB. HOS mean differential improvement was 16.57 points at one year. 85,25% patients exceed MCID and 81,97% SCB. At 10 years, iHOT33 mean differential improvement was 20,15 and 14.12 for HOS. Regarding complications, 1 patient underwent DAIR for infection (1.64%) and 1 dislocation with close reduction (1.64%). iHOT33 or HOS scores should be considered to be used in young active patients after hip preserving surgery or THA, with more predictable results at long-term in THA group

Aims. In the native hip, the hip capsular ligaments tighten at the limits of range of hip motion and may provide a passive stabilizing force to protect the hip against edge loading. In this study we quantified the stabilizing force vectors generated by capsular ligaments at extreme range of motion (ROM), and examined their ability to prevent edge loading. Methods. Torque-rotation curves were obtained from nine cadaveric hips to define the rotational restraint contributions of the capsular ligaments in 36 positions. A ligament model was developed to determine the line-of-action and effective moment arms of the medial/lateral iliofemoral, ischiofemoral, and pubofemoral ligaments in all positions. The functioning ligament forces and stiffness were determined at 5 Nm rotational restraint. In each position, the contribution of engaged capsular ligaments to the joint reaction force was used to evaluate the net force vector generated by the capsule. Results. The medial and lateral arms of the iliofemoral ligament generated the highest inbound force vector in positions combining extension and adduction providing anterior stability. The ischiofemoral ligament generated the highest inbound force in flexion with adduction and internal rotation (FADIR), reducing the risk of posterior dislocation. In this position the hip joint reaction force moved 0.8° inbound per Nm of internal capsular restraint, preventing edge loading. Conclusion. The capsular ligaments contribute to keep the joint force vector inbound from the edge of the acetabulum at extreme ROM. Preservation and appropriate tensioning of these structures following any type of hip surgery may be crucial to minimizing complications related to joint instability. Cite this article: Bone Joint Res 2021;10(9):594–601

The challenges faced by hip surgeons have changed over the last decade. Historically, fixation, polyethylene wear, osteolysis, loosening and failure to osseointegrate dominated the discussions at hip surgery meetings. With the introduction of highly crosslinked polyethylene, wear and osteolysis are currently not significant issues. Improved surgical technique has resulted in a high rate of osseointegration and once fixed, loosening of cementless components is rare. In this session, we will focus on issues that orthopaedic surgeons performing hip surgery routinely face including bearing couples in the young active patient, implant choices in the dysplastic hip and osteoporotic femur, evaluation and management of the unstable hip and differential diagnosis of the painful THR

When removing femoral cement in revision hip surgery, creating an anterior femoral cortical window is an attractive alternative to extended trochanteric osteotomy. We describe our experience and evolution of this technique, the clinical and radiological results, and functional outcomes. Between 2006 and 2021 we used this technique in 22 consecutive cases at Whanganui Hospital, New Zealand. The average age at surgery was 74 years (Range 44 to 89 years). 16 cases were for aseptic loosening: six cases for infection. The technique has evolved to be more precise and since 2019 the combination of CT imaging and 3-D printing technology has allowed patient-specific (PSI) jigs to be created (6 cases). This technique now facilitates cement removal by potentiating exposure through an optimally sized anterior femoral window. Bone incorporation of the cortical window and functional outcomes were assessed in 22 cases, using computer tomography and Oxford scores respectively at six months post revision surgery. Of the septic cases, five went onto successful stage two procedures, the other to a Girdlestone procedure. On average, 80% bony incorporation of the cortical window occurred (range 40 −100%). The average Oxford hip score was 37 (range 22 – 48). Functional outcome (Oxford Hip) scores were available in 11 cases (9 pre-PSI jig and 2 using PSI jig). There were two cases with femoral component subsidence (1 using the PSI jig). This case series has shown the effectiveness of removing a distal femoral cement mantle using an anterior femoral cortical window, now optimized by using a patient specific jig with subsequent reliable bony integration, and functional outcomes comparable with the mean score for revision hip procedures reported in the New Zealand Joint Registry

An international faculty of orthopaedic surgeons presented their work on the current challenges in hip surgery at the London Hip Meeting which was attended by over 400 delegates. The topics covered included femoroacetabular impingement, thromboembolic phenomena associated with hip surgery, bearing surfaces (including metal-on-metal articulations), outcomes of hip replacement surgery and revision hip replacement. We present a concise report of the current opinions on hip surgery from this meeting with appropriate references to the current literature

Genetic skeletal disorders constitute a rare and heterogeneous bone diseases often leading to poor quality of life. Several surgical options are available. The surgeon must deal with specific features (bone deformity, previous procedures, abnormal bone quality, stiffness or instability, muscle weakness). The questions concern the feasibility of the procedures and the surgical strategy.

55 patients (26 W, 29 M) were reviewed between 2016 and 2022. The mean age of the patients was 35 years (17–71). The diagnosis included 9 hereditary multiple exostoses, 8 osteogenesis imperfecta, 6 multiple epiphyseal dysplasia congenita, 6 achondroplasia, 4 osteopetrosis, 3 pycnodysostosis, 3 hypophosphatemic rickets, 3 fibrous dysplasia, 2 mucopolysaccharidosis, and 10 miscellaneous. 25 patients were referred for hip problems (40 hips). 4 patients (7 hips) requiring a THA have not been operated (4 planned). 4 patients (6 hips) had a proximal femoral fixation (2 osteotomies, 4 fracture fixations). 17 patients (27 hips) sustained a THA (25 primary, 2 revisions). All of them were operated by one operator, using a posterolateral approach and standard implants (including 7 dysplastic and 2 short stems). No customized implant has been used.

As regard the 27 THAs, the mean follow up was 4.2 years (1–12). The early complications included 2 femoral cracks and 1 femur fracture. There were 2 revisions (1 cup loosening at 2 years, 1 stem loosening at 4 years). No infection nor dislocation occurred. All the patients were satisfied with their treatment and regain some autonomy. 3 THA were considered as unfeasible.

Constitutional bone diseases need a multidisciplinary program of care. The indication for surgery is based on a mutual trust patient/surgeon, a careful evaluation of benefits/risks, and an accurate imaging to anticipate the difficulties. The expected results are a better function and quality of life, and a stability over time.

Fracture of contemporary femoral stems is a rare occurrence. Earlier THR stems failed due to design issues or post manufacturing heat treatments that weakened the core metal. Our group identified and analyzed 4 contemporary fractured femoral stems after revision surgery in which electrochemical welds contributed to the failure.

All four stems were proximally porous coated titanium alloy components. All failures occurred in the neck region post revision surgery in an acetabular cup exchange. All were men and obese. The fractures occurred at an average of 3.6 years post THR redo (range, 1.0–6.5 years) and 8.3 years post index surgery (range, 5.5–12.0 years). To demonstrate the effect of electrocautery on retained femoral stems following revision surgery, we applied intermittent electrosurgical currents at three intensities (30, 60, 90 watts) to the polished neck surface of a titanium alloy stem under dry conditions.

At all power settings, visible discoloration and damage to the polished neck surface was observed. The localized patterns and altered metal surface features exhibited were like the electrosurgically-induced damage priorly reported.

The neck regions of all components studied displayed extensive mechanical and/or electrocautery damage in the area of fracture initiation. The use of mechanical instruments and electrocautery was documented to remove tissues in all 4 cases.

The combination of mechanical and electrocautery damage to the femoral neck and stem served as an initiation point and stress riser for subsequent fractures. The electrocautery and mechanical damage across the fracture site observed occurred iatrogenically during revision surgery. The notch effect, particularly in titanium alloys, due to mechanical and/or electrocautery damage, further reduced the fatigue strength at the fractured femoral necks. While electrocautery and mechanical dissection is often required during revision THA, these failures highlight the need for caution during this step of the procedure in cases where the femoral stem is retained.

Aims

Hip fractures are a major cause of morbidity and mortality, and malnutrition is a crucial determinant of these outcomes. This meta-analysis aims to determine whether oral nutritional supplementation (ONS) improves postoperative outcomes in older patients with a hip fracture.

The challenges faced by hip surgeons have changed over the last decade. Historically, fixation, polyethylene wear, osteolysis, loosening and failure to osseointegrate dominated the discussions at hip surgery meetings. With the introduction of highly crosslinked polyethylene, wear and osteolysis are currently not significant issues. Improved surgical technique has resulted in a high rate of osseointegration and once fixed, loosening of cementless components is rare. In this section, we will focus on issues that orthopaedic surgeons performing hip surgery routinely face including bearing couples in the young active patient, implant choices in the dysplastic hip and osteoporotic femur, evaluation and management of the unstable hip and differential diagnosis of the painful THR

The disadvantages of hip spica casts following hip surgery for cerebral palsy include fractures, plaster sores, soiling and general inconvenience. In this series, 56 hips in 31 children aged 4 to 16 years (mean 8) were treated for hip displacement in keeping with the recommendations of others (eg Miller et al 1997) between 2005 and 2008 by one consultant. There were 29 open reductions for a Reimer's migration index (RMI) greater than 50%. A blade plate was used for the femoral osteotomy, and an acetabuloplasty was performed for 22 hips. No casting or immobilisation of any sort was used. The average length of stay was 5 days. The results at 5 the year follow-up were chosen so that all patients were at the same stage. The average RMI pre-operatively for displaced hips was 76.9 +/− 21.3. At follow-up it was 18.8 +/− 19.7. 18 patients had pain prior to hip surgery; 6 had pain during follow-up, and 4 of these responded to removal of metal; and one required a proximal femoral resection. There were 3 complications: one re-dislocation in the immediate post-operative period, one mal-union because the blade plate cut out; and one of the three walking children fractured below the blade plate 2 ½ months after surgery. There were no infections. The radiographic and clinical outcomes of hip reconstruction without hip spica immobilisation are good, reproducible and long-lasting. The child may be nursed free post-operatively and discharged in his or her own chair. As a result of studying these patients, since 2009 we have introduced locking plates for better fixation, and pre- and post-operative Paediatric Pain Profiles and CPCHILD questionnaires

Objective of the study is to determine to what extent patients experience more limitations 1–5 years after revision total hip arthroplasty (THA) compared to patients after primary THA, and if this is accompanied by a reduction in physical activity behavior. Five hundred and six patients were included: 372 primary and 134 revision THA. Questionnaires were used to measure limitations and physical activity. Linear regression analysis showed that patients after revision surgery report significantly more, clinically relevant limitations compared with primary THA patients, but did not show a significant difference in mean total minutes of physical activity per week. Physical activity behavior appeared to be similar for primary and revision THA patients. The results stress the importance of determining different aspects of recovery after THA.

The aim of this study is to evaluate which patients, if any, can be eligible for a rapid discharge from Hip Surgery Department at 24 hours after primary total hip arthroplasty. Methods In this retrospective clinical trial were included all patients undergone to primary total hip arthroplasty in our Hip Surgery Department from January to June 2004. Exclusion criteria were preoperative anaemia (Hb< 12g/dL), coagulation disease, hip fracture, previous hip surgery and not-weight bearing indication after operation. All patients received an uncemented total hip arthroplasty with posterior surgical approach in regional anaesthesia. All patients had the same post-operative (PO) management including analgesia, prevention of DVT, immediate muscle exercises and physiotherapy for walking on crutches starting on the second PO day. The clinical history, vital parameters, haemoglobin (Hb) value before surgery and for 5 days PO, adverse events like luxation and transfusion were registered. For the statistical evaluation were used the paired “t-test” with a level of significance set at 95%. Differences and p values of < 0.05 were considered significant. Results 234 patients (mean age 65y; range 21–91y) were admitted to the study. 128 women and 106 men. For the blood loss evaluation, the presence of no homogeneous preoperative Hb lead us to analyse the decrease rate of preoperative Hb (DRPH). The mean DRPH was: 22,47% at 1dayPO; 25,09% at 2 daysPO; 22,83% at 3 daysPO; 26,76% at 5 daysPO. For the safety evaluation were considered the incidence of transfusions (limit was set at Hb< 8g/dL) that were related to the preoperative Hb and the age. The transfusion incidence for each preoperative Hb (PrHb) value was: 14% (7/49) for 12< PrHb< 13; 11% (6/53) for 13< PrHb< 14; 11% (5/43) for 14< PrHb< 15; 7% (2/26) for 15< PrHb< 16g/dL. For age under 70y and PrHb> 14g/dL there were the lowest transfusion incidence: 3% (2/41). No adverse events were able to prevent patients from going to Rehabilitation Unit. All patients were able to do their own physiotherapical programme. Pain during physiotherapy was low (mean value of VAS = 3,47). Discussion During the last decade the improvement of anaesthesiologic and surgical technique with minimally invasive soft tissue approach (small incision and little muscular sacrifice) lead to a significant reduction in adverse events after primary total hip arthroplasty. So the relative safety of this surgery justifies the growing importance of intensive rehabilitation and fast recovery. This study shows the safety of a rapid discharge from the Hip Surgery Department. The main adverse event after 24 hours PO is the necessity of blood transfusions, but the incidence rate of only 3%, like in patients with preoperative Hb> 14g/dL and age below 70 years, is not a problem for the physicians of the Rehabilitation Unit. Conclusion This study confirms the possibility to perform a safe One Day Hip Surgery by an accurate selection of the patient

Peripheral nerve injury is an uncommon but serious complication of hip surgery that can adversely affect the outcome. Several studies have described the use of electromyography and intra-operative sensory evoked potentials for early warning of nerve injury. We assessed the results of multimodal intra-operative monitoring during complex hip surgery. We retrospectively analysed data collected between 2001 and 2010 from 69 patients who underwent complex hip surgery by a single surgeon using multimodal intra-operative monitoring from a total pool of 7894 patients who underwent hip surgery during this period. In 24 (35%) procedures the surgeon was alerted to a possible lesion to the sciatic and/or femoral nerve. Alerts were observed most frequently during peri-acetabular osteotomy. The surgeon adapted his approach based on interpretation of the neurophysiological changes. From 69 monitored surgical procedures, there was only one true positive case of post-operative nerve injury. There were no false positives or false negatives, and the remaining 68 cases were all true negative. The sensitivity for predicting post-operative nerve injury was 100% and the specificity 100%. We conclude that it is possible and appropriate to use this method during complex hip surgery and it is effective for alerting the surgeon to the possibility of nerve injury

We describe the clinical and radiological results of 120 consecutive revision hip replacements in 107 patients, using the JRI Furlong hydroxyapatite-ceramic-coated femoral component. The mean age of the patients at operation was 71 years (36 to 92) and the mean length of follow-up 8.0 years (5.0 to 12.4). We included patients on whom previous revision hip surgery had taken place. The patients were independently reviewed and scored using the Harris hip score, the Western Ontario and McMaster Universities osteoarthritis index (WOMAC) and the Charnley modification of the Merle d’Aubigné and Postel score. Radiographs were assessed by three reviewers for the formation of new bone, osteolysis, osseointegration and radiolucent lines in each Gruen zone. The mean Harris hip score was 85.8 (42 to 100) at the latest post-operative review. The mean WOMAC and Merle d’Aubigné and Postel scores were 34.5 and 14.8, respectively. The mean visual analogue score for pain (possible range 0 to 10) was 1.2 overall, but 0.5 specifically for mid-thigh pain. There were no revisions of the femoral component for aseptic loosening. There were four re-revisions, three for infection and one for recurrent dislocation. Radiological review of all the femoral components, including the four re-revisions showed stable bony ingrowth and no new radiolucent lines in any zone. Using revision or impending revision for aseptic loosening as an end-point, the cumulative survival of the femoral component at ten years was 100% (95% confidence interval 94 to 100). We present excellent medium- to long-term clinical, radiological and survivorship results with the fully hydroxyapatite-ceramic-coated femoral component in revision hip surgery

Introduction: With an ever-increasing elderly population the rise in primary total hip replacement is inevitable. This translates into a comparative rise in revision hip surgery. We performed an observational study to determine current revision hip surgical practices in one UK region. Methods: We utilized a regional hip register (Trent Arthroplasty Audit Group (TAAG)) to review current revision hip surgical practice in our region. 136 surgeons in 21 different hospitals, covering a population of 6.2 million, contribute to the register. We analysed completed data forms to produce the following results. Results: 875 revision THRs performed between 2000 and 2002 were identified. 54% were female, with a mean age of 70 (range 26–97). 45 different femoral stems requiring revision were identified. Reasons for revision were aseptic loosening of both components (23%), cup alone (24%), stem alone (17%), infection (14%), recurrent dislocation (10%), periprosthetic fracture (5%) and acetabular erosion (3%). Over 25 different femoral stems and over 30 different acetabular components were utilised by surgeons. In 70% of cases the femoral and acetabular components were made by different manufacturers. Bone graft was used in approximately 50% of cases. 90% of centres contributing to TAAG perform revision hip surgery. 24% of all revision THRs were performed by surgeons performing 5 or less per year. Only 40% of revision THRs were performed by ‘revision surgeons’ performing > 20 per year. Conclusions: It is evident the majority of centres, both teaching and DGH, in our region regularly perform revision hip surgery, with up to a quarter performed by non-revision specialists. With increasing numbers of prostheses available, high numbers of component mismatch use, and the inevitable increase in future need for revision hip surgery, is the occasional revision surgeon compromising patient care? Will this have future medico-legal consequences?

Introduction: Revision hip surgery with impaction allografting is an attractive operation because of its potential to restore lost bone stock. Several authors have reported variable results, some disastrous, with massive subsidence of the stem. Aim: To study the radiographic and clinical results of impaction allografting for revision hip surgery done in our department. Materials and methods: 49 patients (50 hips) underwent revision hip surgery using the impaction allografting technique and the Exeter stem between the years 1993 to 1997. The average follow up was 6 years (range 4 – 9 years). Results: There were 7 dislocations. One patient had early painful subsidence of the stem requiring revision. 44 (90%) hips had subsidence of stem equal to or less than 5 mm at last follow up. 5 (10%) had subsidence ranging from 6 to 7 mm. Hip function was uniformly good and patients were extremely satisfied. Conclusion: Revision hip surgery with impaction allografting is an effective operation. With meticulous attention to this technique, revision hip surgery need not necessarily be associated with inferior outcomes compared to primary hip surgery

Aims

The burden of revision total hip arthroplasty (rTHA) continues to grow. The surgery is complex and associated with significant costs. Regional rTHA networks have been proposed to improve outcomes and to reduce re-revisions, and therefore costs. The aim of this study was to accurately quantify the cost and reimbursement for a rTHA service, and to assess the financial impact of case complexity at a tertiary referral centre within the NHS.

Significant proximal femoral bone deficiency in revision hip surgery poses a considerable challenge, especially as revision hip surgery is increasing in prevalence. Many femoral prosthetic devices, which compensate for this bone loss, are available to surgeons but ideally one wants to restore viable proximal bone stock. The Oxford Universal Hip (OUH) has been designed and modified with these challenges in mind. This is atrimodular, non-locking device that allows for some rotation and subsidence in the cement. Load transfer occurs at the proximal wedge, thus avoiding proximal stress shielding. The OUH has been used extensively in both primary and revision hip surgery and is particularly useful when used in conjunction with proximal impaction bone grafting. The main aim of this study was to determine the clinical outcome of the patients. The viability and survivorship of the impacted bone graft was assessed in order to give some indication of adequate perfusion of the incorporated bone grafting. Between 1999 and 2002 the OUH, in combination with proximal impaction bone grafting, was implanted in 72 hip revisions in 69 patients. All patients were clinically evaluated using the Oxford Hip score. Histological samples of impacted bone grafting were analysed by a pathologist 2 years after implantation to assess viability and perfusion of the impacted bone graft. The Oxford Hip Score improved from a pre-operative to a post-operative score of 45 (26–58) to 24.3 (12–43) respectively (p< 0.001). The mean follow up time was 32.7 months and in that time there were no re-revisions for aseptic loosening. Histology demonstrated viable bone stock in the proximal femur where bone grafting had been impacted 2 years previously. The OUH is a versatile hip prosthesis for use in revision hip arthroplasty and is especially well suited to proximal impaction bone grafting where it is possible to restore viable bone stock

Litigation costs are significant and increasing annually within the National Health Service (NHS) in England. The aim of this work was to evaluate the burden of successful litigation relating to hip surgery in England. Secondary measures looked at identifying the commonest causes of successful legal action. A retrospective review was conducted on the National Health Service Litigation Authority (NHSLA) database. All successful claims related to hip surgery over a 10 year period from 2003–2013 were identified. A total of 798 claims were retrieved and analysed. The total cost of successful claims to the NHS was £66.3 million. This compromised £59 million in damages and £7.3 million in NHS defence-related legal costs. The mean damages for settling a claim were £74,026 (range £197-£1.6million). The commonest cause of claim was post-operative pain with average damages paid in relation to this injury being £99,543. Nerve damage and intra-operative fractures were the next commonest cause of claim with average damages settled at £103,465. Legal action in relation to hip surgery is a considerable source of cost to the NHS. The complexity of resolving these cases is reflected in the associated legal costs which represent a significant proportion of payouts. With improved understanding of factors instigating successful legal proceedings, physicians can recognise areas where practice and training need to be improved and steps can be taken to minimise complications leading to claims

Background. Revision total hip arthroplasty is a technically demanding procedure and especially removing a well fixed femoral stem is a challenge for revision surgeons. There are various types of trochanteric osteotomies used during revision surgery; extended trochanteric osteotomy (ETO) is being more popular. Aim. The aim of this study is to look at types of trochanteric osteotomy used during the revision surgery. We looked at the success and failure of these osteotomies. Failure of the osteotomy is defined by complete pull off by the hip abductors resulting in osteotomy fragment is no contact with the femur. We sought to assess the time to healing of osteotomy and number of cables used. Methods. We retrospectively reviewed the hospital theatre database and identified 97 patients who underwent revision hip surgery from June 2008 to December 2015. Among these 35 patients (36% of patients) had trochanteric osteotomy for either extraction of femoral stem or removal of cemented mantle. Results. Most common cause of revision was aseptic loosening in 22 cases (62%) followed by peri prosthetic fracture 6 cases (17%), 1. st. stage of revision surgery in infective cause in 4 cases (11%). Depending on the length of the osteotomy performed we divided the patients into two groups. The first group had osteotomy just around the greater trochanter, which is called short trochanteric osteotomy group and the second group had extended trochanteric osteotomy where the osteotomy length is at least of 15cms and preserving the vastus lateralis attachment to the osteotomy. 7 patients had short trochanteric osteotomy and remaining 28 patients had extended trochanteric osteotomy. In the short trochanteric osteotomy group had 4 out of 6 patients had failure of the osteotomy repair. In extended trochanteric osteotomy group, there was one immediate failure and another one had delayed trochanteric pull off out of 28 patients (93% success rate). The time taken for the osteotomy to heal in short trochanteric osteotomy group was 8 months where as in the extended osteotomy group it was 5 months. The mean number of cables used was 3 in both groups. There was no subsidence seen during the post op follow up in either group. Conclusion. Our study concluded that ETO is a safe procedure with a low complication rate rather than short trochanteric osteotomy. Implications. Awareness about the biomechanics of ETO and its indications can make ETO an important tool in the revision surgeon's armamentarium

Introduction: Revision hip surgery is likely to become more frequent with the continued use of cemented primary hip prostheses. Primitive stem cells from bone marrow become osteocytes in the presence of hydroxyapatite ceramic (HAC). Consequently there is osseointegration of an HAC surface in bleeding cancellous bone/marrow. However, damaged bone in the revision situation does not provide the necessary stem cells for osseointegration. Revision surgery using standard length (150mm) HA coated stems is not always satisfactory. Using a 200 mm stem will extend the operating field into fresh, undamaged cancellous bone and marrow. Method: Since 1988 more than 2600 HAC hips have been implanted for primary and revision hip cases. This includes 148 revisions. The continued use of primary HAC hips has reduced the necessity for revision hip surgery. There is a dwindling population of cemented, loosening hips requiring revision. Patients are assessed radiologically and using the Harris Hip Score (HHS) pre. and post-operatively on an annual basis. Results: Since 1991 the longer 200mm stems have been used in 73 cases. The results have been rewarding. The system works with improved HHS. Defects from debris disease fill in and stems are seen to bond to the host bone particularly at the tip. There have been no prosthetic fractures. Only one case has needed re-revision when a stem remained un-bonded in the presence of a transverse femoral fracture. Two other stems are probably not bonded. This represents 4% failure. Discussion: HA bonding is a successful system of fixation in primary hip arthroplasty. Using a 200mm stem in revision cases allows virgin bone marrow to provide the necessary stem cells for fixation. These longer HA coated stems should be used in revision surgery

The aim of this study is to evaluate techniques which may reduce intra and Post-Operative (PO) bleeding in hip surgery. Methods: In this prospective study, from 9/2005 to 6/2006, we evaluated Blood Loss (BL) after primary total hip arthroplasty. Exclusion criteria were anti-coagulant drugs not discontinued 10 days before surgery and patients whose condition precluded weight bearing PO. We included total hip arthroplasty with posterior surgical approach, spinal anaesthesia, hypotensive surgery and peri-operative blood salvage (Ortho PAS, Euroset). When appropriate, the Mini-Invasive Approach (MIA) was used. In a different sub-set of patients, including some of the minimally invasive patients, a new bipolar Radio-Frequency sealer (TissueLink) was used. The PO program had pain control, LMWH for prevention of DVT, exercise from the day of surgery and walking on crutches from the next day. We analysed: blood loss after surgery and for 3 days; haemoglobin values (g/dL) before surgery and for 5 days PO; thigh circumference pre-op and at 5 days and adverse events such as transfusions and luxation. For the statistical evaluation the paired “t-test” was used, with a level of significance set at 95%. Differences and p values of < 0.05 were considered significant. Results: 324 patients (mean age 68; range 23 to 89; 179 F & 145 M) were admitted to the study. Mean BL was 305ml intraoperative, 501ml at 6 hours PO, 304ml at 1day PO, 132ml at 2 days PO and trace at 3 days. Rather than simple unit measures, we analyzed the Percent Change in Hb from preoperative levels (%CHb). The patients had a mean %CHb of 23,09% at 1day PO, 26,67% at 2 days PO, 28,13% at 3 days and 29,07% at 5 days. Transfusion rates (TR; trigger set at Hb< 8g/dL) were related to the preoperative Hb and age. Overall TR was 15% (51/324), the prevalence of homologous transfusion was 7% (24/324). The TR for each Hb value: 21% (15/69) for Hb=12–13, 20% (20/98) for Hb=13–14, 17% (15/88) for Hb=14–15 and 5% (1/29) for Hb=15–16. The mean value of pain during rehabilitation was 3,11(VAS). MIA (53/324) was associated with reduced BL (mean %CHb at 1st day PO 19.12; TR 9%), but with high variability. The use of bipolar sealer (58/324) was associated with a significant reduction in overall BL (mean %CHb at 1st day PO 15.83; TR 5%) as well as a reduction of thigh swelling (37%) and of mean rehabilitation pain (30%; VAS=2.15). Discussion: Reduced blood loss, reduced post-operative pain and a faster functional resumption are obtained with both the minimally invasive approach and the TissueLink sealer approach. In addition, MIA provides muscle preservation and the use of the TissueLink sealer provides reduced post-operative swelling. Conclusion: This study shows that both the minimally invasive surgical approach and the use of an irrigated RF bipolar sealer can lead to reduced blood loss and faster functional resumption following hip surgery

Postoperative dislocations are known to be a big problem in revision surgery. In literature dislocation rates vary from 4.8% to 33% after previous surgery. In revision surgery, impingement of the implant components, the capsular and soft tissue release, muscular weakness and greater trochanter problems can give additional instability. The reason for revision is important, where instability, infection and tumour cases will lead to a higher percentage of dislocations. The use of big metal heads on polyethylene should be avoided because of the higher volumetric wear. With the new developments of metal-on-metal hip resurfacing and the production of big modular metal heads, the metal-on-metal bearing should guarantee a low-wear result without osteolysis. Between November 2000 and December 2003 45 patients requiring a revision were treated with a Birmingham Hip Resurfacing cup (MMT, UK) and a big metal-on-metal modular head. All surgery was done with a posterolateral approach. Cup sizes range from 44 to 66 mm, head sizes range from 38 to 58 mm. The head sizes most often used were 58 mm, 54 mm and 50 mm. All patients were prospective followed using the Orthowave software (CRDA France). In this series of 45 revisions (mean age 56.17) with large modular heads we encountered 2 dislocations, which give us a dislocation rate of 4.4%. One of these dislocations became recurrent and was revised to a full-constrained acetabular component. Our own dislocation rate in revision hip surgery is 13% (21/159) in the anterolateral approach. Dislocations using the posterolateral approach increased this percentage to 14.8% (21/141). Taking in account that 31% of the causes of revision were infection and recurrent dislocation, this trial demonstrates that large diameter ball heads give beside a better range of movement also a statistically proven reduction in the dislocation rate in revision hip surgery

Allogenic blood is a finite resource, with associated risks. Previous studies have shown intra-operative cell salvage (ICS) can reduce allogenic transfusion rates in orthopaedic surgery. However, recent concerns regarding the efficacy and cost-effectiveness of ICS mean we must continually re-assess its usefulness in current practice. This study was carried out to review the use of ICS, to establish if its use has led to a reduction in patient exposure to post-op allogenic transfusion. All orthopaedic patients who underwent ICS and re-infusion between 2008–2010 in the Southern General Hospital (SGH) were audited. The Haemoglobin (Hb) drop, volume of blood re-infused and post-op allogenic transfusion rates were recorded. The revision hip group was compared to a similar SGH cohort, who underwent surgery by the same surgeons between 2006–2008, and a pre-2005 control group. The Cell Saver (Haemonetics) machine was used. The proportion of patients who received a post-op allogenic transfusion fell by 55% in the 2008–2010 ICS cohort compared with the control, and by 40% compared with the previous ICS study group. In both instances, this was accompanied by a statistically significant (p<0.001) reduction in mean number of units transfused per patient. ICS has been shown to be effective in reducing rates and volume of post-op allogenic transfusion in patients undergoing revision hip surgery at the SGH. ICS has been used with increasing efficiency over time

Background: Perioperative red cell salvage may be of use in cases where significant blood loss is likely. The purpose of this investigation was to see if its use in revision hip surgery led to a reduction in homologous blood transfusion requirement. Methods: 48 patients were identified who had undergone revision hip surgery with the use of a Cell Saver device for perioperative autologous transfusion. Patients were individually matched to control patients who had undergone revision hip surgery without the Cell Saver. Patients were matched for age, sex and eight operative variables, which were chosen to indicate the type of revision surgery and possible level of blood loss, to ensure that the groups were comparable. Total homologous transfusion requirement in both groups was recorded as well as pre and post-operative haemoglobin levels. Results: The groups were well matched for age, sex and operative variables. The total homologous transfusion requirement was significantly lower in the Cell Saver group than the control group (mean 2.6 v 6.4 units of packed cells respectively, p 0.0006). There was no difference in pre-operative haemoglobin between the groups but it was lower in the Cell Saver group post-operatively (Cell Saver 10.1g/dl v Control 10.6g/dl, p 0.06). There was no difference in length of operation. Conclusions: Use of perioperative red cell salvage was associated with significantly lower homologous transfusion requirement. This is the first study looking at the use of perioperative red cell salvage in revision hip surgery with matching of patients on the basis of operative variables. A cost analysis shows that use of the Cell Saver has significant financial advantage in these patients

Background: Perioperative red cell salvage may be of use in cases where significant blood loss is likely. The purpose of this investigation was to see if its use in revision hip surgery led to a reduction in homologous blood transfusion requirement. Methods: 48 patients were identified who had undergone revision hip surgery with the use of a Cell Saver device for perioperative autologous transfusion. Patients were individually matched to control patients who had undergone revision hip surgery without the Cell Saver. Patients were matched for age, sex and eight operative variables ,which were chosen to indicate the type of revision surgery and possible level of blood loss, to ensure that the groups were comparable. Total homologous transfusion requirement in both groups was recorded as well as pre and post-operative haemoglobin levels. Results: The groups were well matched for age, sex and operative variables. The total homologous transfusion requirement was significantly lower in the Cell Saver group than the control group (mean 2.6 v 6.4 units of packed cells respectively, p 0.0006). There was no difference in pre-operative haemoglobin between the groups but it was lower in the Cell Saver group post-operatively (Cell Saver 10.1g/dl v Control 10.6g/dl, p 0.06). There was no difference in length of operation. Conclusions: Use of perioperative red cell salvage was associated with significantly lower homologous transfusion requirement. This is the first study looking at the use of perioperative red cell salvage in revision hip surgery with matching of patients on the basis of operative variables. A cost analysis shows that use of the Cell Saver has significant financial advantage in these patients

Introduction. Revision hip arthroplasty with massive proximal femoral bone loss remains challenging. Whilst several surgical techniques have been described, few have reported long term supporting data. A proximal femoral allograft (PFA) may be used to reconstitute bone stock in the multiply revised femur with segmental bone loss of greater than 8 cm. This study reports the outcome of largest case series of PFA used in revision hip arthroplasty. Methods. Data was prospectively collected from a consecutive series of 69 revision hip cases incorporating PFA and retrospective analyzed. Allografts of greater than 8 cm in length (average 14cm) implanted to replace deficient bone stock during revision hip surgery between 1984 and 2000 were included. The average age at surgery was 56 years (range 32–84) with a minimum follow up of 10 years and a mean of 15.8 years (range). Results. From the original cohort four patients had died with the original PFA, 21 (30.4%) patients required further surgery with 14 (20.3%) of these needing revisions of the femoral component. The mean time to femoral revision was 9.5 years and Kaplan-Meier survivorship analysis demonstrates a 79.9% PFA survivorship at 20 years. Discussion. Proximal femoral allograft affords long lasting reconstruction of the femoral component in revision hip surgery. We advocate PFA as an attractive option in the reconstruction of the hip in the presence of significant segmental bone loss in younger patients

Introduction: In a climate of tightening budgets and rising cost the pressure on those performing complex and expensive surgery is ever increasing. Patients requiring revision hip surgery are a particular burden on such limited resources. Hospital trusts are dependent upon adequate remuneration for such complex procedures, a process reliant on accurate coding. Methods: We performed a retrospective audit of our coding for revision hip surgery. This highlighted significant shortfalls in the coding process. We implemented necessary changes prior to a further prospective audit. Results: The primary procedure was correctly coded in all our cases throughout, creating a standard tariff (mean £6,897). However certain procedures enable an additional tariff uplift of up to 70%. Yet these additional procedures (performed in 81% of our procedures) had not been coded; loosing these additional tariff uplifts of 70%. We involved and educated our coding staff, creating a ‘tick box’ sticker to be placed on every revision hip operation-record and completed by the operating surgeon. Our subsequent tariff uplifts for these procedures have been significant. Discussion: Joint replacement surgery is being performed in an ever younger and more active population. Patients are increasingly likely to outlive their prosthesis and peri-prosthetic fracture rates are set to continue rising. In the modern NHS, surgeons must have a good understanding of complex tariffs. Coding staff are a notoriously poorly paid and undervalued component of any Hospital Trust, and invariably lack the surgical experience to interpret complex procedures. Trusts must take measures to ensure such large tariff uplifts are not missed for complex procedures. We explain the tariff process and discuss how improvements can easily be achieved by individual trusts

Purpose. Tape blisters after hip surgery are frequent. There are source of pain, an obstacle for rapid rehabilitation and an open door for infection. Previous studies have shown a reduction up to 10% according to the type of bandage. A previous survey in our hospital demonstrated more than 50% of patients presenting tape blisters with the use of Hypafix. The purpose of this prospective study was to compare the prevalence of blisters with the use of three different kinds of bandages. Method. Between April and December 2009, 150 patients admitted for hip surgery (THR, hip fractures) were randomized in three groups: Hypafix (control group), silicone gel (Mepilex Border), perforated plaster (Mepore Pro). Groups were similar for demographic datas and type of surgery. Main outcome is tape blisters during hospital stay. Additional observations were duration of hospital stay, costs related to bandages and nursing cares. Outpatient records were completed by nurses and patients and returned to research team after complete wound healing. Results. 149 patients completed follow-up, one patient was excluded because of cancelled surgery. The blister prevalence in the silicone group is of 3% and significantly lower than the Mepore Pro (59%, p<0,01) and the Hypafix group (63%, p<0,01). Blisters appear in the first two days after surgery. There is no relationship with the type of surgery. Hospital stay was similar in all groups. 45% of outpatient records were obtained. Silicone gel bandage is cost effective: even if more expensive, it required less nursing cares during hospital stay and after returning home. Conclusion. The silicone gel bandage (Mepilex border) is associated with only 3% of tape blisters and really more effective than the two other bandages. It is even more effective than bandages described in the literature. It is also cost effective and doesnt require outpatient cares. The silicone bandage is associated with an important reduction of tape blisters after hip surgery, with the lower rate observed in the literature

Introduction: Recurrent dislocation is a significant problem after total hip replacement. Aetiology is multifactorial and treatment should address the reason for dislocation. The use of a constrained tripolar liner is an option in the surgical treatment of dislocation. Methods: A retrospective review was carried out of patients who have undergone revision hip surgery and had a constrained liner cemented into the acetabulum. Patients were identified from a computer database. All patients had a constrained liner cemented onto a satisfactory pre-existing cement mantle, cemented into a reconstruction ring, or cemented into a well fixed cementless shell. The Osteonics Tripolar Liner was used in all cases and the outer aspect of the tripolar liner was prepared with a burr to create grooves and thus improve cement interlock. Data collected included demographics, reason for revision, components used, re-revision rate, outcome and survival. Results: There were 58 cases identified where a cemented constrained liner was inserted at revision hip surgery. Average age at time of surgery was 77years (range 40–94). Reason for use of a constrained liner was recurrent dislocation in over 95% of cases. There were 9 patients who died with less than 2 years follow-up; they were excluded, leaving a study group of 49 cases. Average duration of follow-up was 46months (range 24–76). There have been 4 infections, one of which required removal of prostheses and 2 stage revision. There was one case of fall post-operatively and fracture of the contra-lateral femoral neck. There have been 3 implant failures requiring re-revision. All failures were due to disarticulation of the liner, 2 of which occurred in the same patient on separate occasions. There have been no revisions for loosening, and there have been no cases of failure at the bone-cement interface or at the cement-cement interface with the cement-in-cement technique. Overall survival of the cemented constrained liner was 91.8% at average 3.8years. Conclusion: This study demonstrates that a cemented constrained tripolar liner is a viable option in revision hip surgery, particularly in the treatment of recurrent dislocation

Introduction: Recurrent dislocation can be a significant problem after total hip replacement. The use of a constrained tripolar liner is an option in the surgical treatment of dislocation or instability. Methods: A retrospective review was carried out of patients identified from a prospective database. All patients had a constrained liner cemented onto a satisfactory pre-existing cement mantle, cemented into a reconstruction ring, or cemented into a well fixed cementless shell. The Osteonics Tripolar Liner was used in all cases; the outer aspect of the liner was prepared with a burr to create grooves and thus improve cement interlock. Data collected included demographics, reason for revision, re-revision rate, outcome and survival. Results: There were 58 cases identified where a cemented constrained liner was inserted at revision hip surgery. Average age at time of surgery was 77years (range 40–94). There were 9 patients who died with less than 2 years follow-up; they were excluded, leaving a study group of 49 cases. No cases were lost to follow-up. Average duration of follow-up was 46months (range 24–76). There have been 4 infections, one of which required removal of prostheses and a 2-stage revision. There was one case of fall post-operatively and fracture of the contra-lateral femoral neck. There have been 4 implant failures requiring re-revision. All failures were due to disarticulation of the liner, 2 of which occurred in the same patient on separate occasions. There have been no revisions for loosening, and there have been no cases of failure at the bone-cement interface or at the cement-cement interface with the cement-in-cement technique. Overall survival of the cemented constrained liner was 90% at average 3.8years. Conclusion: This study demonstrates that cementing a constrained liner into the acetabulum is a viable option in revision hip surgery, particularly in the management of instability

Introduction. Surgical simulation and ‘virtual’ surgical tools are becoming recognised as essential aids for speciality training in Trauma & Orthopaedics, as evidenced by the BOA T&O Simulation Curriculum 2013. 1,2. The current generation of hip arthroplasty simulators, including cadaveric workshops, offers the trainee limited exposure to reproducible real life bony pathology. We developed and implemented a novel training course using pathological dry bone models generated from real patient cases to support senior orthopaedic trainees and new consultants in developing knowledge and hands on skills in complex total hip arthroplasty. Patient/Materials & Methods. A two-day programme for 20 delegates was held at a specialist centre for hip arthroplasty. Three complex femoral and three complex acetabular cases were identified from patients seen at our centre. 3D models were printed from CT scans and dry bone models produced (using a mold-casting process), enabling each delegate to have a copy of each case at a cost of around £30 per case per delegate (Figure 1). The faculty was led by 4 senior Consultant revision hip surgeons. A computerised digitising arm was used to measure cup positioning and femoral stem version giving candidates immediate objective feedback (Figure 2). Candidate experience and satisfaction with the course and models was evaluated with a standardised post-course questionnaire. Results. 91% of respondents rated overall course satisfaction good or very good with 100% stating learning objectives were met or exceeded. 100% of delegates rated the bone model workshop cases as good or very good for the acetabular course, and 88% for the femoral course. Discussion. This course has been shown to enhance learning of surgical techniques and skills in complex hip surgery. Conclusion. We have developed a novel, effective and low cost training simulation method using pathological dry bone models for complex and revision hip arthroplasty which could be developed for other anatomical areas

On the basis of observations made in recent years, it can be inferred that the incidence of venous thromboembolism (VTE) in Japan is as high as that in Western countries. Since 2007, the use of fondaparinux for the prophylaxis of VTE following lower-limb orthopedic surgery has been approved for Japanese patients. This study was performed with an aim to investigate the safety and efficacy of fondaparinux for the prevention of VTE following hip surgery in Japanese patients. From June 2007 to August 2008, we evaluated 141 consecutive patients (148 hips; average age, 65.6) undergoing total hip replacement (THR), consisted of cementless minimally invasive surgery, and hip fracture surgery (HFS), consisted of open reduction and internal fixation or bipolar hemiarthroplasty. We mainly used 2.5 mg of fondaparinux for a period extending up to 14 days. We estimated the symptomatic VTE and asymptomatic deep-vein thrombosis (DVT) rates in patients by ultrasonography performed on preoperative and postoperative day 3. In addition, we evaluated the pre-operative and postoperative plasma D-dimer levels on days 3, 7, and 14. We determined that both the preoperative and postoperative incidence of symptomatic VTE was 0%. A D-dimer value of 20 ug/ml or higher was not observed on preoperative days 3 and 7; however, this value was observed in 2 hips on postoperative day 14. The incidence of asymptomatic DVT was observed to be 0.8% preoperatively and 4% postoperatively. In particular, the corresponding value following HFS was observed to be 7.7% preoperatively. The incidence of the hemorrhagic event was observed to be 14.9%. Bleeding was mostly observed in the surgical and drainage areas. An overall major bleeding incidence of 0.7% (1 patient) was observed. The corresponding value in patients in whom the administration of fondaparinux was discontinued by day 14 was 18.9%. The study results indicate that fondaparinux is useful in Japanese patients for the prevention of VTE following hip surgery. However, the administration of this drug should be accompanied by additional measures to prevent the associated side effect of bleeding

Tantalum is a pure metallic element and is attractive for use in orthopaedic implants because it is one of the most biocompatible metals available for implant fabrication. The potential advantages for the use of porous tantalum in total hip arthroplasty include:. excellent bone and tissue ingrowth observed histologically;. direct polyethylene intrusion into the metal substrate. This allows the elimination of any potential backside wear in the monoblock cup;. The two-piece design consist of a tantalum shell with screw holes for fixation into the dome of the ilium and posterior column. A polyethylene liner is cemented into the tantalum shell to eliminates backside motion. In addition, acetabular augments of porous tantalum have been developed for use in restoration of major bone deficiencies. Prospective study on a case serie of 113 THA’s performed by two surgeons in a single institution. From 2000 to December 2003, 113 hips have undergone arthroplasty using porous tantalum implants consisting of 54 primary hip arthroplasties and 59 revision THA’s. The patients where evaluated clinical and radiographically every 3 month during the first year, and after yearly. Mean patient age was 64,2 years, (range 44–87); with 59% males and 41% females. No patients died or lost to follow-up. No further surgeries of the involved hip. No radiographic signs of loosening of the acetabular component according to the criteria of Hodgkinson et al. No problems specifically from the use of acetabular augments or extra screws has been noted. Of the revision series, a total of 16 cases have received acetabular augments. Complications included 1 superficial infection, 2 dislocations. No vasculonervous complication; and in 2 cases technical difficulties to achieve good fixation due to ethiology of the THA (desarthrodesis). The average Harris hip score improved from 48 to 89 following primary surgery. Tantalum acetabular components for primary and revision hip surgery have performed well for up to 3 years, and have excellent stability. The two-piece acetabular shell and augments permits the reconstruction of every acetabular bone defect

Tantalum is a pure metallic element and is attractive for use in orthopaedic implants because it is one of the most biocompatible metals available for implant fabrication. The potential advantages for the use of porous tantalum in total hip arthroplasty include:. excellent bone and tissue in growth observed histologically;. direct polyethylene intrusion into the metal substrate. This allows the elimination of any potential backside wear in the monoblock cup;. The two-piece design consist of a tantalum shell with screw holes for fixation into the dome of the ilium and posterior column. A polyethylene liner is cemented into the tantalum shell to eliminates backside motion. In addition, acetabular augments of porous tantalum have been developed for use in restoration of major bone deficiencies. Prospective study on a case serie of 113 THA’s performed by two surgeons in a single institution. From 2000 to December 2003, 113 hips have undergone arthroplasty using porous tantalum implants consisting of 54 primary hip arthroplasties and 59 revision THA’s. The patients where evaluated clinical and radiographically every 3 month during the first year, and after yearly. Mean patient age was 64,2 years, (range 44–87); with 59% males and 41% females. No patients died or lost to follow-up. No further surgeries of the involved hip. No radiographic signs of loosening of the acetabular component according to the criteria of Hodgkinson et al. No problems specifically from the use of acetabular augments or extra screws has been noted. Of the revision series, a total of 16 cases have received acetabular augments. Complications included 1 superficial infection, 2 dislocations. No vasculo-nervous complication; and in 2 cases technical difficulties to achieve good fixation due to ethiology of the THA (desarthrodesis). The average Harris hip score improved from 48 to 89 following primary surgery. Tantalum acetabular components for primary and revision hip surgery have performed well for up to 3 years, and have excellent stability. The two-piece acetabular shell and augments permits the reconstruction of every acetabular bone defect

We describe the clinical and radiological results of 120 consecutive revision hip replacements in 107 patients, using a titanium alloy femoral component fully coated with Hydroxyapatite ceramic (HAC). The mean age at operation was 71 years (range 36 to 92). The average length of follow up was 8.0 years (range 5.0 to 12.4). All patients receiving a JRI Furlong HAC coated femoral component (JRI Instrumentation Ltd, London, UK) with a minimum follow up of 5 years were included. These included patients on whom previous revision hip joint surgery had taken place. Patients were independently reviewed and scored using the Harris Hip Score (HHS), the Charnley modification of the Merle d’Aubigne and Postel Score (MDP), and The Western Ontario and McMaster Universities Osteoarthritis index (WOMAC). Radiographs were assessed by three reviewers (blinded to clinical details) for new bone formation, osteolysis, osteointegration and radiolucent lines in each Gruen Zone. The mean Harris hip score was 85.8 (range 42 to 100) at the latest post-operative review. The mean WOMAC and MDP scores were 34.5 and 14.8 respectively. The mean pain visual analogue score (range 0 to 10) was 1.2 overall and 0.5 specifically for mid-thigh pain. There were no revisions of any femoral component for aseptic loosening. There were four stem re-revisions (3 cases of infection, 1 recurrent dislocation). Radiological review of all femoral components, including the four mentioned, revealed stable bone ingrowth with no new radiolucent lines in any zone. Using revision or impending revision for aseptic loosening as the end point, at 10 years the cumulative survival for the stem was 100% (95% CI 94 to 100). We present excellent medium to long term clinical, radiological and survivorship results with the use of a fully HAC coated titanium stem in revision hip surgery

Queen Elizabeth the Queen Mother Hospital, Margate, East Kent Hospitals NHS University Trust, UK. PURPOSE. Surfaces of supports used to position patients for hip replacement are usually are in direct contact with the patient skin around the groin/buttock areas & repeated use of same supports, in trauma & elective surgeries, can be a source of cross-infection & wound contamination. MATERIALS AND RESULTS. Swab samples from 12 supports, employed interchangeably for elective & trauma surgery. Cultured & incubated at 37 0 C in Columbia Blood Agar. 2 random supports cleaned using Sani Cloth Detergent non-alcoholic wipes & 2 samples were obtained from each support, 5 min later. 71% sampled supports were contaminated, with Coagulase-negative Staphylococcus, including Staph Epidermidis, being the most commonly grown organism with average of 5.3 colony forming units (CFU) (0-38) per swab. 5 min after cleaning 2 of above supports there was a 100% reduction in their contamination with no growth from the 4 swabs. CONCLUSION. Trauma patients are not necessarily subjected to groin MRSA swabs pre-operatively in contrast to patients undergoing elective hip surgery who are rigorously swabbed for the same & interchangeable use of hip supports in trauma and elective patients defeats the purpose of this practice considering the fact that Coagulase -ve Staphylococci like Staph epidermidis, reside on the hip supports presently used in the orthopaedic theatre. We recommend strict cleaning of these supports for 5 min with the detergent wipes before & between every orthopaedic hip case & where feasible, the supports used should be different for elective and trauma cases

Introduction and objective: Infection is one of the greatest threats in hip surgery. It is agreed that the implant should be removed. The debate remains open if one or two stage surgery is perferable. This study evaluates the two stage septic hip revison arthroplasty and compares our results with the literature. Materials and Methods: A retrospective clinical and radiological study was performed on patients that had a two stage septic revision hip surgery. The Harris Hip Score (HHS) and the Mayo Hip Score (MHS) were applied. The ASA-Score for evaluation of preoperative morbidity was introduced. Statistical evaluation included the t–test. Results: 40 patients with 41 primary total hip replacements underwent septic revision. 17 patients with 18 hip prostheses (8 male, 9 female) could be evaluated. 14 patients were deceased, the rest was unable to participate due to severe health problems.12 patientswith 13 hips had a primary reimplantation, 5 patients had to be left with a Girdlestone situation. The mean follow up was 52 months (4.3 years, standard error +/−28). The average age was 68 years. The mean preoperative ASA-Score was 3.24 (+/−0,75). Staph. aureus was the most common infectious agent (35%) followed by Staph epidermidis (24%) and E. coli (12%). The mean time between removal and re-implantation was 158 days. The most frequent primary preoperative indication for hip arthroplasty was osteoarthritis (62%) followed by trauma (24%) and avascular necorsis of the femoral head (14%). In 42%, the onset of ionfection was early (under 12 months after implantation), 58%% of the patients had a late onset infection. The MHS in the group who had a reimplantation was an average of 66/standard error +/−21). The patients with a Girdlestone situation had a HHS that was not significantly lower than the rest (58 in Girdlestone patients, 61 in patients with re-implantation). Discussion: The study demonstrated that our results compare well to those of other studies. It supports the conclusion that two stage septic hip arthroplasty is still an excellent option in septic revision arthroplasty. The preoperative ASA-Score which is not routinely mentioned in other studies showed that many of our patients were critically ill. This may explain the long interval between removal and reimplantation, and it may also be of value to determine wether to re-implant at all costs. This study remarkably demonstrated that patients with resection arthroplasty did not have a significantly lower HHS than those with performed re-implantation. The resection arthroplasty may be considered a valuable solution in clinically very ill patients according to our results. If a second operation considering the ASA -score would be too risky it should be discussed if reimplantation must be achieved

Purpose. The purpose of this paper is to describe the outcomes of major hip surgery for children with cerebral palsy and communication difficulties using a validated health related quality of life measure and a validated pain score. Method. Children with hypertonic bilateral cerebral palsy (CP) GMFCS levels IV and V, 2–15 years old, having femoral + /- acetabular osteotomies for hip displacement were included if their ability to communicate necessitated the use of the CPCHILD (Caregiver Priorities and Child Health Index of Life with Disabilities) and PPP (Paediatric Pain Profile). The underlying indication for surgery was a hip migration index of more than 40% . CPCHILD and PPP questionnaires were completed face-to-face with the parents or carers at baseline, at 3 months after surgery and at 6 months after surgery. Results. There were 54 patients with a mean age of 8.8 years (SD 3.6). At baseline the mean CPCHILD was 52.1 (SD 11.8). At 3 months it was 58.5 (SD 13.1; p< 0.001). At 6 months it was 59.4 (SD 12.4; p< 0.001). This paper also describes the changes within each domain of the CPCHILD. At baseline the PPP was 12.7 (SD 7.2); at 3 months the PPP was 9.8 (SD 7.2; p< 0.01); at 6 months the PPP was 9.2 (SD 6.4; p< 0.001). Conclusion. Hip reconstruction for displacement is a major intervention for an often asymptomatic condition. This paper confirms that health related quality of life (measured by the CPCHILD) and pain (measured by the PPP) return to baseline or better than baseline within 3 months of surgery and that this is maintained at 6 months. These results should be reassuring for families and healthcare workers looking after children with severe disability undergoing surgery of this sort

Aim. Different perioperative strategies have been implemented to reduce the devastating burden of infection following arthroplasty. The use of iodophor-impregnated adhesive incise drapes is one such strategy. Despite its wide adoption, there is little proof that this practice leads to a reduction of bacterial colonization. The aim of this randomized, prospective study was to evaluate the efficacy of iodophor-impregnated adhesive drapes for reducing bacterial count at the incision site. Method. A total of 96 patients undergoing open joint preservation procedure of the hip were enrolled in this prospective, randomized clinical trial of iodophor-impregnated adhesive drapes. *. One half of patients (n=48) had iodophor-impregnated adhesive drapes. *. applied to the skin prior to incision and kept on throughout the procedure, while the other half (n=48) underwent the same surgery without the use of iodophor-impregnated adhesive drapes. *. Culture swabs were taken from the surgical site at five different time points during surgery (pre-skin preparation, after skin preparation, post-incision, before subcutaneous closure, and prior to dressing application) and sent for culture and colony counts. Mixed-effects and multiple logistic regression analyses were utilized. Results. Iodophor-impregnated adhesive drapes resulted in a significant reduction of bacterial colonization of the surgical incision. At the conclusion of surgery, 12.5% (6/48) of incisions with iodophor-impregnated adhesive drapes. *. and 27.0% (13/48) without adhesive drapes were positive for bacteria. When controlling for preoperative colonization and other factors, patients without adhesive drapes were significantly more likely to have bacteria present at the incision at the time of closure (odds ratio (OR) 11.88, 95% confidence interval (CI) 1.45–80.00), and at all time-points when swab cultures were taken (OR 2.48, 95% CI 1.00–6.15). Conclusions. Based on this skin sampling study, incise draping significantly reduces the rate of bacterial colonization/contamination during hip surgery. The bacterial count at the skin was extremely high in some patients without iodophor-impregnated adhesive drapes. *. , which raises the possibility that a subsequent surgical site infection or periprosthetic joint infection could likely arise if an implant had been utilized

Angiogenesis, the growth of new blood vessels from pre-existing vasculature has an obvious and essential role in soft and hard tissue repair. During the wound healing many potential angiogenic factors are released and may be found in circulating blood. The most important are basic fibroblast growth factor (bFGF) and vascular endothelial growth factor (VEGF). Experimental data confirm the important role of VEGF and bFGF in wounds and bone healing. It was proved that heparin and its low-molecular derivatives may interfere with various steps of angiogenesis process. Enoxaparine (En) is frequently used as anticoagulant for prophylaxis of thromboembolic complications. The aim of this study was to evaluate in vivo angiogenic potency and VEGF and bFGF content of sera collected from 7 patients after hip surgery, treated for 14 days with 40 mg of En (Clexane, Aventis) daily. Evaluation of angiogenic activity was performed twice before surgery (before and 1 day after one En dose) and 14 days after surgery. Sera were injected intra-dermally to anaesthetized Bal/c mice and 72 hours later the number of newly-formed blood vessels was counted in dissecting microscope (SIA test). Cytokines concentration was estimated by ELISA. Results: Sera obtained after one En dose presented increase of angiogenic activity (57,3+/− 2,4, n=112, p< 0.01)in comparison to the value before En (44.6 +/− 2.5, n=113 of newly-formed blood vessels. After 14 En doses, further increase was observed (72 +/− 4.9 blood vessels, n= 112). BFGF levels increased after the first En dose, VEGF concentration was significantly higher after 14 injections as compare to the results obtained before or after one injection of En. Conclusion: Beneficial effect of 14-days prophylaxis with enoxaparine on healing process might be expected in patients after hip surgery

Introduction

Open and arthroscopic hip debridement may be used for treatment of femoral acetabular impingement (FAI). There is a paucity of evidence regarding the efficacy of one over the other.

Introduction: Severe stress shielding and radiographic cortical changes in the proximal femur are frequent after extensively porous-coated stem in revision surgery. We have analyzed the evolution of the femoral cortex at different levels and related factors. Material and Methods: We assessed 95 extensively porous-coated stems in revision surgery with a minimum 5-year follow-up (Mean 10.2 years). 77 hips were revised due to aseptic loosening and 18 due to periprosthetic fractures. Extended osteotomy was used in 29 hips. No cortical struts were used. Preoperative and postoperative osteoporosis was graded according to Moreland and bone defect according to Paprosky. Femoral cortex width was measured at different levels in the immediate postoperative radiograph, at 3, 6 and 12 months and at the last follow-up. Results: There were 2 re-revisions for aseptic loosening. Radiographic ingrowth fixation was more frequent in minor intraoperative bone defects (p=0.011). Preoperative osteoporosis was related to the width of the medial and lateral cortex. Medial cortical thickness increased at different levels with a mean increase of 13.4% (p< 0.001) and the lateral cortical thickness showed a mean decrease of 2.7% at the proximal level. The femoral medial cortex tended to show a higher slope trend in periprosthetic fractures (p=0.015). The outside femoral diameter increased more rapidaly with an extended trochanteric osteotomy (p=0.007). The slope trend of the lateral and medial cortex was significantly higher at proximal levels in hips with a 10-inch stem (p=0.015). Conclusions: Although without clinical relevance at the end of follow-up, femoral medial cortical thickness increased while frequently lateral cortical thickness decreased over time after an extensively porous -coated stem in revision hip surgery