Abstract
The results of application of the Kyocera unicompartmental knee arthroplasty are presented. This operation was performed on 20 knees in 18 patients between September 1988 and December 1990. The indicated disease was osteoarthritis of the knee of the medial type in 19 cases and of the lateral type in one. The patients consisted of 15 females and 3 males with an age range of 62 to 81 (mean age : 72) . The postoperative course ranged from 6 to 3 3 months (mean period: 16 months) .
The results showed a marked improvement in pain with the pain disappearing completely in 17 out of 2 0 knees. The mean postoperative flexion was 121.40 . Sitting on the heels was possible with 3 knees.
The postoperative FTA averaged 175.80. In postoperative X-rays, the weight-bearing axis passed through the center or slightly to the medial side of the knee joint, and slight under-correction was seen. These operative results with the Kyocera unicompartmental knee arthroplasty were better than those with the previously used Marmor-type because of strict operative indications, design of the prosthesis and improvement of surgical procedures.
