Abstract
From January 1986 to December 1991, 111 total knee arthroplasties (Miller-Galante 1 System) were performed in 71 patients. Of those, 90 joints in 60 patients, 37 with rheumatoid arthritis and 23 with osteoarthritis, were observed before, during, and after operation for this study. They were divided into four groups according to the degree of postoperative ROM at follow-up, which averaged 51 months. The excellent group, that having more than 130 degrees, consisted of 10 knees in 6 patients; the good group, that with 120 to 129 degrees, of 19 knees in 13; the fair group, that with 91 to 119 degrees, of 40 knees in 24; and the poor group, that with 90 degrees or less, of 21 knees in 17. The results indicated that the factors influencing the ROM were preoperative ROM, primary indication, heights of postoperative joint line, patellar thickness, postoperative pain and successive postoperative rehabilitation.
