Problems with the Rotaflex: a 10 year review of a rotating hinge prosthesis.

The results of the first 10-year review of the Rotaflex total knee prosthesis are presented. Loosening, fracture, implant failure, and damage to the extensor mechanism have been frequent findings. Of 25 implants reviewed, an arthrodesis has been performed in 4 patients and an amputation in 2. Surgery has been declined in a further 4 patients. A brace is required by 7 of 19 patients in whom the prosthesis has not been removed, and the results of surgery are considered poor in 13 of these 19 patients. With an overall complication rate of almost 80%, there would appear to be no place for this prosthesis despite its continued availability.