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Preoperative Knee Stiffness and Total Knee Arthroplasty Outcomes

  • Mitch Winemaker, MD, FRCSC

      Affiliations

    • Hamilton Arthroplasty Group, Hamilton Health Sciences Juravinski Hospital, Hamilton, Ontario, Canada
    • McMaster University, Faculty of Health Sciences, 1280 Main St. West, Hamilton, Ontario, Canada
    • ,
  • Wael A. Rahman, MD

      Affiliations

    • Hamilton Arthroplasty Group, Hamilton Health Sciences Juravinski Hospital, Hamilton, Ontario, Canada
    • McMaster University, Faculty of Health Sciences, 1280 Main St. West, Hamilton, Ontario, Canada
    • ,
  • Danielle Petruccelli, MLIS

      Affiliations

    • Hamilton Arthroplasty Group, Hamilton Health Sciences Juravinski Hospital, Hamilton, Ontario, Canada
    • Corresponding Author InformationReprint requests: Danielle Petruccelli, MLIS, Hamilton Arthroplasty Group, Hamilton Health Sciences Juravinski Hospital, Hamilton, Ontario, Canada L8V 1C3.
    • ,
  • Justin de Beer, MD, FRCSC

      Affiliations

    • Hamilton Arthroplasty Group, Hamilton Health Sciences Juravinski Hospital, Hamilton, Ontario, Canada
    • McMaster University, Faculty of Health Sciences, 1280 Main St. West, Hamilton, Ontario, Canada

Received 1 June 2011; accepted 10 December 2011. published online 30 January 2012.
Corrected Proof

Abstract 

A retrospective case-control study was conducted to evaluate 1-year total knee arthroplasty (TKA) outcomes among preoperative stiff knees, range of motion (ROM) 80° or less, compared with nonstiff preoperative knees, ROM 100° or greater. A total of 134 stiff knee cases were compared with a matched cohort of 134 non–stiff knee controls. Knee Society Score and Oxford Knee Score change scores from baseline to 1 year were similar between the groups. Stiff knees experienced a significantly greater mean improvement in ROM from baseline to 1 year (30.8° ± 18.8°) as compared with nonstiff knees (1.1° ± 12.8°) (P < .0001). Although ultimate ROM of a TKA can be restricted secondary to preoperative stiffness, improvements in outcomes and ROM are not affected. We conclude that progression of stiffness should not in and of itself lead to earlier intervention of TKA in most cases.

Keywords: total knee arthroplasty, range of motion, stiffness, Knee Society Score, Oxford Knee Score

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 The Conflict of Interest statement associated with this article can be found at doi:10.1016/j.arth.2011.12.015.

PII: S0883-5403(11)00693-0

doi:10.1016/j.arth.2011.12.015

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