INTRODUCTION Injuries to the origin of the hamstring muscles usually occur in athletes and can result in an avulsion fracture of the ischium, an avulsion of the ischial apophysis, or a pure avulsion of the hamstring tendons themselves, depending on the patient's age. These are rare injuries in the general population and are often initially misdiagnosed as a simple 'hamstring pull', leading to the development of chronic pain and disability.PATIENTS AND METHODS We present a retrospective case series of the 12 patients with such injuries who presented or were referred consecutively to the senior author between 1997 and 2006.RESULTS There was a significant delay (5 months to 12 years) in the diagnosis of the injury in 8 of the 12 patients. Five of these 8 patients required more extensive surgery than would otherwise have been required as a result of this delay, but all recovered well. The sporting career of one of the remaining three patients had already been brought to an end by her injury and the subsequent disability, and she elected not to have surgery. Of the four patients who were diagnosed acutely, three required surgery, and all four had an excellent result.CONCLUSIONS Injuries to the hamstring origin are rare and are often initially misdiagnosed as a simple 'hamstring pull', leading to the development of chronic pain and disability. Displaced injuries of the ischial apophysis and pure tendon avulsions are probably best treated surgically in the acute setting. As a result of our experience with these patients, we have produced a management algorithm.

Our study demonstrates that total hip replacement is effective in keeping patients under the age of 60 years employed. It is also effective in allowing those already off work due to hip pain to return to work, although there is a much greater delay.

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Abstract Background Although the performance of total wrist arthroplasty systems has improved, failure is encountered and is a major challenge to manage. Questions Does physical function improve with surgical management of the failed wrist arthroplasty? Is there an improvement in secondary outcome measures including pain, grip strength, and range of motion? What are the reasons for failure in primary total wrist arthroplasty? What are the complications associated with revision of the failed total wrist arthroplasty? What are the survival profiles of the different revision strategies? Methods A systematic review of available literature was performed. Studies were systematically assessed, and data extracted from suitable studies for review. Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) reporting guidelines were adhered to. The study protocol was modified from a previous protocol published on the PROSPERO database. Results Fourteen studies were identified considering 218 patients/214 index operations with a follow-up duration following revision surgery of 2 months to 21 years (silicone wrist arthroplasty—42 cases; nonsilicone wrist arthroplasty—172 cases). The functional outcome of revision surgery was infrequently recorded and documented with only short-term assessments undertaken. Complications were seen in 1:2 revision procedures, with re-revision surgeries required in 21.6% of revised primary nonsilicone arthroplasties. Re-revision rate following a revision arthrodesis was 21.4% (15/70 cases) compared with revision arthroplasty of 34.8% (32/92 cases). Revision arthrodesis nonunion rate was 17.5% (22 cases). Conclusion This review has confirmed the high level of surgical complexity and the likelihood of a complicated postoperative outcome when salvaging a failed wrist replacement. Level of Evidence This is a Level 3, systematic review study.