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      Clinical outcome of endoprosthetic replacement for failed treatment of intertrochanteric fractures: A retrospective case series

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          Abstract

          Objective: The treatment methods for the failed internal fixation in elderly patients suffering from several osteoporostic fractures are still inconclusive. We aimed to evaluate the clinical effects of endoprosthetic replacement for failure treatment of intertrochanteric fracture.

          Methodology: A total of 13 patients with failed internal fixation for intertrochanteric fracture were collected between January 2002 and October 2009. All of them were treated with endoprosthetic replacement and followed up till October 2010. Four of them received total hip replacement and the remained nine received artificial bipolar femoral head replacement. Clinical and functional outcomes of patients were assessed.

          Results: Of 13 patients, nine were females and four were males with the mean age of 76.5 years (SD, 11.7, range, 58-92 years) at the time of fracture. The average time of operation and follow-up was 124 minutes (89-187minutes) and 31 months (14-68 months), respectively. The average blood loss during the operation was 631 ml (450-1560 ml). All patients showed good pain relief and functional improvement. Final post-operative Harris and WOMAC scores were significantly improved from pre-operative levels ( P<0.05). Only five patients showed operative complications.

          Conclusions: Our finding indicated that endoprosthetic replacement is an effective salvage procedure for failed internal fixation of intertrochanteric fracture in elderly patients with effective pain relief and functional improvement as well as few serious complications.

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          Reverse obliquity fractures of the intertrochanteric region of the femur.

          The reverse obliquity fracture of the proximal part of the femur is a distinct fracture pattern that is mechanically different from most intertrochanteric fractures. The purpose of this retrospective study was to determine the prevalence of these fractures and the results and complications of different types of internal fixation used in their treatment. Between 1988 and 1998, 2472 consecutive patients with a hip fracture were treated at our Level-One Trauma Center; 1035 of the fractures were classified as intertrochanteric or subtrochanteric. Clinical and radiographic records were retrospectively reviewed, and fifty-five fractures with a reverse obliquity pattern were identified. Forty-nine patients were followed until the fracture united or a revision operation was performed. The duration of clinical follow-up averaged eighteen months (range, three to sixty-seven months), and the duration of radiographic follow-up averaged fifteen months (range, three to sixty months). Fractures were classified with the Orthopaedic Trauma Association scheme. Results were analyzed according to the fracture pattern, type of implant, quality of the reduction, position of the implant, and use of bone graft at the index operation. Function was assessed on the basis of pain, living situation, need for walking aids, need for analgesics, and walking capacity. Thirty-two (68%) of forty-seven hips treated with internal fixation healed without an additional operation. Fifteen (32%) of the forty-seven failed to heal or had a failure of fixation. The failure rate was nine of sixteen for the sliding hip screws, two of fifteen for the blade-plates, three of ten for the dynamic condylar screws, one of three for the cephalomedullary nails, and zero of three for the intramedullary hip screws. Use of the fixed-angle devices (the blade-plate and the dynamic condylar screw) resulted in fewer failures than did use of the sliding hip screw (p = 0.023). Eleven (46%) of twenty-four nonanatomically reduced fractures and four (17%) of twenty-three anatomically reduced fractures had a failure of treatment (p = 0.060). Eleven (26%) of forty-two fractures with an ideally placed implant and four (80%) of five fractures with a non-ideally placed implant had a failure of treatment (p = 0.023). Of the fifteen fractures that failed to heal or had a failure of fixation, five were treated with revision to a calcar-replacement prosthesis, seven were treated with revision open reduction and internal fixation with bone-grafting, and one was treated with bone-grafting without revision of the fixation. Two patients refused additional surgery because they had limited functional demands. The two-year mortality rate was 33%. Functional results were poor, with many patients requiring walking aids and losing the capacity for independent walking and self-care. In this series, reverse obliquity fractures accounted for 2% of all hip fractures and 5% of all intertrochanteric and subtrochanteric fractures. Ninety-five-degree fixed-angle internal fixation devices performed significantly better than did sliding hip screws. Results were also worse for fractures with poor reduction and those with a poorly placed implant.
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            Responsiveness of the WOMAC osteoarthritis index as compared with the SF-36 in patients with osteoarthritis of the legs undergoing a comprehensive rehabilitation intervention.

            To compare the responsiveness of the condition-specific Western Ontario and McMaster Universities osteoarthritis (OA) index (WOMAC) and the generic Short Form-36 (SF-36) in patients with OA of the legs undergoing a comprehensive inpatient rehabilitation intervention. A prospective follow up study of consecutively referred inpatients of a rehabilitation clinic was made. The patients included fulfilled the American College of Rheumatology criteria for knee or hip OA and underwent both passive and, particularly, active physical therapy for three to four weeks. Responsiveness assessment was performed using the standardised response mean (SRM), effect size, and Guyatt's responsiveness statistic between admission and discharge (end of rehabilitation) and then again between admission and three months later. For pain and function the SRMs were stratified by sex and OA joint. Effects were tested by the t test and SRMs of different scales were compared by the jack knife test. At the three month follow up, complete data were obtained for 223 patients. In general, the three responsiveness statistics showed a similar order of responsiveness. For both instruments, the pain scales were more responsive than the function scales. The responsiveness of the pain scale of both instruments was comparable (SRM=0.723 for WOMAC and SRM=0.528 for SF-36 at the end of rehabilitation; SRM=0.377 for WOMAC and SRM=0.468 for SF-36 at the three month follow up). In the measurement of function, the WOMAC was significantly more responsive than the SF-36 (SRMs, end of rehabilitation: 0.628 v 0.249; three month follow up: 0.235 v -0.001). Responsiveness tended to be higher in women and in knee OA than in men and hip OA. Both instruments, the WOMAC and the SF-36, capture improvement in pain in patients undergoing comprehensive inpatient rehabilitation intervention. Functional improvement can be detected better by the WOMAC than by the SF-36. All the other scales of both instruments were more weakly responsive.
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              Hip arthroplasty for salvage of failed treatment of intertrochanteric hip fractures.

              Failed treatment of an intertrochanteric fracture typically leads to profound functional disability and pain. Treatment with repeated attempts to gain union and to preserve the host femoral head usually is preferred for young patients, but salvage treatment with hip arthroplasty may be considered for selected older patients with poor bone quality, bone loss, or articular cartilage damage. The purpose of the present study was to evaluate the results and complications of hip arthroplasty performed as a salvage procedure after the failed treatment of an intertrochanteric hip fracture. Between 1985 and 1997, sixty patients (forty-nine women and eleven men) with a mean age of seventy-eight years were treated at our institution with hip arthroplasty after the failed treatment of an intertrochanteric fracture. Thirty-two patients had a total hip arthroplasty with a cemented cup (twenty-four patients) or an uncemented cup (eight patients), twenty-seven had a bipolar hemiarthroplasty, and one had a unipolar hemiarthroplasty. A calcar-replacement design, extended-neck stem, or long-stem implant was used in fifty-one of the sixty hips. Ten patients died within two years (all with the implant intact), and six were lost to follow-up. The remaining forty-four patients were followed for a mean of five years (range, two to fifteen years). At the time of the last follow-up, thirty-nine patients had no or mild pain and five had moderate or severe pain; in all of these patients, the pain was in the region of the greater trochanter. Forty patients were able to walk, twenty-six with one-arm support or less. Twelve patients had a total of thirteen medical complications postoperatively. A total of five reoperations were performed: two patients had a revision, one had a rewiring procedure because of trochanteric avulsion, one had late removal of trochanteric hardware, and one had débridement of fat necrosis. One patient had two dislocations, both of which were treated with closed reduction. Kaplan-Meier survivorship analysis with revision of the implant for any reason as the end point revealed a survival rate of 100% at seven years and 87.5% (95% confidence interval, 67.3% to 100%) at ten years. Hip arthroplasty is an effective salvage procedure after the failed treatment of an intertrochanteric fracture in an older patient. Most patients have good pain relief and functional improvement. Calcar-replacement and long-stem implants often are required. Despite the operative challenges, surprisingly few serious orthopaedic complications were associated with this procedure in the present study.
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                Author and article information

                Journal
                Pak J Med Sci
                Pak J Med Sci
                PJMS
                Pakistan Journal of Medical Sciences
                Professional Medical Publicaitons (Karachi, Pakistan )
                1682-024X
                1681-715X
                April 2013
                : 29
                : 2
                : 633-637
                Affiliations
                [1 ]Wei Feng, Department of Orthopedics, The Second Affiliated Hospital, Inner Mongolia Medical University, Hohhot, China.
                [2 ]Ting Hao, Department of Orthopedics, The Second Affiliated Hospital, Inner Mongolia Medical University, Hohhot, China.
                [3 ]Wan-lin Liu, Department of Pediatric Orthopedics, The Second Affiliated Hospital, Inner Mongolia Medical University, Hohhot, China.
                [4 ]Yan-fei Jia, Department of Orthopedics, The Second Affiliated Hospital, Inner Mongolia Medical University, Hohhot, China.
                [5 ]Zeng-tao Hao, Department of Orthopedics, The Second Affiliated Hospital, Inner Mongolia Medical University, Hohhot, China.
                [6 ]Sheng-Bin Bai, Department of Anatomy & Neurobiology, Xiangya School of Medicine, Central South University, 78 Xiangya Road, Changsha, China.
                Author notes
                Correspondence: Wan-lin Liu, Department of Pediatric Orthopedics, The Second Affiliated Hospital, Inner Mongolia Medical University, Hohhot, China. E-mail: lewenbao2012@126.com& Wei Feng and Ting Hao contributed equally to this study.
                Article
                pjms-29-633
                3809265
                f71b8297-30c8-49fd-8b8e-8c60a191195f

                This is an Open Access article distributed under the terms of the Creative Commons Attribution License, ( http://creativecommons.org/licenses/by/3.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                : 15 September 2012
                : 9 January 2012
                : 10 January 2013
                Categories
                Original Article

                failure treatment of intertrochanteric fracture,endoprosthetic replacement,functional assessment

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