Abstract
This study looks at the use of rotating hinge Total Knee Replacement (TKR) as a treatment option when dealing with fractures involving the knee.
The treatment of complex intra-articular fractures involving the knee has always proved challenging. Studies have investigated the outcome of various forms of treatment for such injuries, including internal fixation and primary knee arthroplasty. Recent advances in technology have brought about more sophisticated implants for both internal fixation and arthroplasty, including rotating hinge TKR.
The initial non-rotating hinged prostheses for total knee arthroplasty did not enjoy a good reputation. The cumulative survival rate has been quoted as 65% at 6 years, significantly lower than that of conventional prostheses. Therefore the use of such implants was restricted to complex primary or revision arthroplasty, and tumour surgery. Studies have been published advocating the use of hinged prostheses for distal femoral fractures in elderly patients. The average age in the most recent study was 82, of whom 42% had died within the first post-operative year.
This study is a case series of 16 patients with fractures who were treated with rotating hinge TKR. The age range is 36 to 92, with a mean of 69, lower than that of earlier studies. Outcome data as measured by the Oxford knee scoring system has been retrospectively collected. At follow up the range of Oxford knee scores was 14 to 52, with a mean of 36. We discuss the indications, experiences and outcomes in the management of these patients, and conclude that this is a valid treatment option in certain circumstances.
