title: Range of motion after arthroplasty for the stiff osteoarthritic knee.
abstract: 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.
authors.affiliation: The Louisville Institute for Joint Replacement and The Arthroplasty Foundation, Louisville, KY, USA. DDMSpicer@AOL.com
authors.forename: D D M
authors.initials: DD
authors.lastname: Spicer
authors.forename: J I
authors.initials: JI
authors.lastname: Curry
authors.forename: D L
authors.initials: DL
authors.lastname: Pomeroy
authors.forename: W E
authors.initials: WE
authors.lastname: Badenhausen
authors.forename: L A
authors.initials: LA
authors.lastname: Schaper
authors.forename: K E
authors.initials: KE
authors.lastname: Suthers
authors.forename: M W
authors.initials: MW
authors.lastname: Smith
mesh_terms: D019645:Arthroplasty, Replacement, Knee; D005500:Follow-Up Studies; D006801:Humans; D020370:Osteoarthritis, Knee / Q000601:surgery*; D016059:Range of Motion, Articular