Interdependence of clinical and isokinetic results after bicondylar knee prostheses with special emphasis on quality of life results

Nineteen patients were examined at an average follow-up of 2 years after to tal knee joint replacement without patella resurfacing. They were compared with 22 healthy subjects of the same age. Using the Hospital for Special Su rgery (HSS) score the operated knee joints scored an average of 77 points, the contralateral side scored 87 points and the control group 97 points. In the SF-36 health questionnaire the patients showed highly significant devi ations. Isokinetic measurements revealed a clear loss of isokinetic strengt h of more than 50% on average in flexion as in extension when compared to t he control group and there were considerable asymmetries between the operat ed and the contralateral legs.