Abstract
The function of 76 patellofemoral knee joints afer replacement with Kinemax condylar prostheses (Howmedica, UK) were evaluated. The indications for arthroplasty were knee destruction caused by rheumatoid arthritis (RA) in 33 cases and osteoarthritis in 35 patients. The average period of observation was 2.5 years. Anterior knee pain was recorded in 15 cases. In 2 cases it was caused by deep infection. In two other knees, the cause of the complaints was subluxation of the prosthetised patellae. In the other 11 cases, pain came from an active rheumatoid process and was less intense than before operation. Disorders of the patellar tracking were recorded in 13 joints even though only 2 were painful. Loosening of the patellar component was not recorded. Evaluation of knee function confirms the need to resurface the patella, especially in patients suffering from RA, and the necessity to be precise in arthroplasty procedure.
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