Abstract
This study was undertaken to assess the factors affecting the postoperative range of motion after total knee arthroplasty (TKA). From November 2000 to March 2003, 68 TKA (The Fundation Total Knee System) surgeries were performed on 64 patients. Of these, 33 joints in 32 patients with osteoarthritis were observed as the subjects of this study. The patients were divided into two groups according to the postoperative range of motion (ROM). The average follow-up period was 34 months (range : 18 to 46 months).
The good group, defined as having more than 120 degrees range of motion consisted of 20 knees in 19 patients. The poor group with 90 degrees or less consisted of 13 knees in 13 patients. Each group was examined preoperatively, and operatively for factors relating to range of motion after TKA. The results of this study indicated that the factors affecting ROM were preoperative range of flexion and ROM, heights of postoperative joint line, and preoperative and postoperative patellar height.
