Range of motion after arthroplasty for the stiff osteoarthritic knee

• Published in: Journal of the Southern Orthopaedic Association Vol. 11; no. 4; p. 227
• Main Authors: Spicer, D D M, Curry, J I, Pomeroy, D L, Badenhausen, Jr, W E, Schaper, L A, Suthers, K E, Smith, M W
• Format: Journal Article
• Language: English
• Published: United States 2002
• Subjects: Arthroplasty, Replacement, Knee; Follow-Up Studies; Humans; Osteoarthritis, Knee - surgery; Range of Motion, Articular
• ISSN: 1059-1052

In 28 of 1656 total knee arthroplasties (TKAs) (1.7%) performed for osteoarthritis at this institution, the preoperative arc of motion was 60 degrees or less (average 47.5 degrees; range, 20-60 degrees). The outcome of 22 of the 28 TKAs (21 patients) is reported at a mean follow-up of 52.9 months (range, 24-144 months). Eighty-two percent of the cases were managed with standard soft-tissue releases and posterior cruciate-retaining implants and 18% with a cruciate-substituting design. The joint score rose from 28.8 to 82.2 and the Knee Society Score from 24.6 to 77 points. The mean postoperative arc of motion improved by 46 degrees-93.5 degrees. At latest follow-up, 68.2% of knees achieved maximal flexion of 90 degrees or more. Manipulation was performed in 22.7%. Complications were minimal. A functionally useful range of motion is possible after total knee arthroplasty in the majority of stiff osteoarthritic knees, often without the need for posterior cruciate substitution.