title: Revision total knee arthroplasty for stiffness.
abstract: Few studies have evaluated the results of revision of well-fixed components for stiffness, and some authors have recommended against this intervention based on poor reported results. Thirty-five consecutive patients underwent revision of both femoral and tibial components for stiffness. At a mean of 54.5 months (range, 25-134), the mean arc of motion improved by 44.5 degrees from a preoperative mean of 53.6 degrees to a postoperative mean of 98.1 degrees (P < .0001). The arc of motion improved by more than 30 degrees in 75% (24/32) of patients evaluated at a minimum of 2 years. Seventeen (49%) of the 35 patients required a further intervention for stiffness or sustained a complication. These results suggest that revision total knee arthroplasty for stiffness can be performed with a reasonable expectation of improvement, although the risk of complications and additional operative procedures is substantial.
authors.affiliation: Department of Orthopaedic Surgery, University of Nebraska Medical Center Omaha, Nebraska 68198, USA.
authors.forename: Curtis W
authors.initials: CW
authors.lastname: Hartman
authors.forename: Nick T
authors.initials: NT
authors.lastname: Ting
authors.forename: Mario
authors.initials: M
authors.lastname: Moric
authors.forename: Richard A
authors.initials: RA
authors.lastname: Berger
authors.forename: Aaron G
authors.initials: AG
authors.lastname: Rosenberg
authors.forename: Craig J
authors.initials: CJ
authors.lastname: Della Valle
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019645:Arthroplasty, Replacement, Knee; D015331:Cohort Studies; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007719:Knee Joint / Q000503:physiopathology* / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000453:epidemiology; D016059:Range of Motion, Articular / Q000502:physiology*; D012086:Reoperation; D012189:Retrospective Studies; D012307:Risk Factors; D016896:Treatment Outcome