Unicompartment knee arthroplasty for knee joint disease

摘要

Objective To report the short-term result of unicompartmental knee arthroplasty ( UKA ) for osteoarthritis and spontaneous osteonecrosis of the knee, and discuss the indications and surgical pitfalls for the procedure as well. Methods From April 1999 to July 2000, unicompartmental knee arthroplasty were performed in 20 cases (24 knees). Osteoarthritis in 18 cases (20 knees) and spontaneous osteonecrosis in 2 cases (2 knees); 10 males (12 knees) and 10 females (12 knees). The range of motion (ROM), femorotibial angle (FTA) and JOA score were adopted as main parameters to evaluate the outcome of the operation. The mean age of the patients at the time of operation was 73. 3 ± 7. 1 years, and 75. 0 ± 6. 8 years at the final follow-up. The mean follow-up period was 25. 7 ± 15. 0 months. The prostheses used in the group were unicompartment sleigh shaped artificial joint of Link Endomodel Sled Knee, Waldemar Link or YCMK. Results Before operation, the mean ROM was from 5.4° ± 6.1° (extension) to 120.