Unicompartmental knee arthroplasty.

This is a review of the results of 17 knees treated by modular-type (Marmor) unicompartmental knee prostheses. The average age at the time of the operation was 62 years with an average follow-up period of 59 months. All the patients improved and were satisfied with the operation. There were no cases of revision or degenerative changes in the opposite compartment. It seems clear that the indications for this procedure should be an elderly person with severe pain and single-compartment disease. The knee should have a correctable deformity with good range of motion, minimal flexion contracture, and good quadriceps strength.