Range of Motion Following Total Knee Arthroplasty in Ankylosed Joints

Following a vigorous range of motion protocol, 13 ankylosed knees (preoperative motion, 16° ± 8° to 48° ± 23°) achieved a significant increase in postoperative range of motion (0° ± 2° to 103° ± 20°), which was indistinguishable from that achieved by a comparable group of flexible knees (preoperative flexion, 90° or more). The motion gained has been sustained during the two- to five-year follow-up period of the study.