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The John Insall Award: Gender-specific Total Knee Replacement: Prospectively Collected Clinical Outcomes

  • Symposium: Papers Presented at the Annual Meetings of the Knee Society
  • Published:
Clinical Orthopaedics and Related Research

Abstract

Gender-specific total knee replacement design is a recent and debated topic. We determined the survivorship and clinical outcomes of a large primary total knee arthroplasty cohort, specifically assessing any differences between gender groups. A consecutive cohort of 3817 patients with 5279 primary total knee replacements (3100 female, 2179 male) with a minimum of 2 years followup were evaluated. Preoperative, latest, and change in clinical outcome scores (WOMAC, SF-12, KSCRS) were compared. While men had higher raw scores preoperatively, women had greater improvement in all WOMAC domains including pain (29.87 versus 27.3), joint stiffness (26.78 versus 24.26), function (27.21 versus 23.09), and total scores (28.35 versus 25.09). There were no gender differences in improvements of the SF-12 physical scores. Men had greater improvement in Knee Society function (22.1 versus 18.63) and total scores (70.01 versus 65.42), but not the Knee Society knee score (47.83 versus 46.64). Revision rates were 10.2% for men and 8% for women. Women demonstrated greater implant survivorship, greater improvement in WOMAC scores, equal improvements in SF-12 scores, and less improvement in only the Knee Society function and total scores. The data refute the hypothesis of inferior clinical outcome for women following total knee arthroplasty when using standard components.

Level of Evidence: Level II, prognostic study. See the Guidelines for Authors for a complete description of levels of evidence.

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Authors and Affiliations

  1. Division of Orthopaedic Surgery, University of Western Ontario & London Health Sciences Centre, University Campus, 339 Windermere Rd., London, ON, Canada, N6A 5A5

    Steven J. MacDonald MD, FRCSC, Kory D. Charron MET, Robert B. Bourne MD, FRCSC, Douglas D. Naudie MD, FRCSC, Richard W. McCalden MD, FRCSC & Cecil H. Rorabeck MD, FRCSC

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  1. Steven J. MacDonald MD, FRCSC
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  2. Kory D. Charron MET
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  3. Robert B. Bourne MD, FRCSC
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  4. Douglas D. Naudie MD, FRCSC
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  5. Richard W. McCalden MD, FRCSC
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  6. Cecil H. Rorabeck MD, FRCSC
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Corresponding author

Correspondence to Steven J. MacDonald MD, FRCSC.

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Each author certifies that he or she has no commercial associations (eg, consultancies, stock ownership, equity interest, patent/licensing arrangements, etc) that might pose a conflict of interest in connection with the submitted article.

Each author certifies that his or her institution has approved the human protocol for this investigation and that all investigations were conducted in conformity with ethical principles of research, and that informed consent for participation in the study was obtained.

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MacDonald, S.J., Charron, K.D., Bourne, R.B. et al. The John Insall Award: Gender-specific Total Knee Replacement: Prospectively Collected Clinical Outcomes . Clin Orthop Relat Res 466, 2612–2616 (2008). https://doi.org/10.1007/s11999-008-0430-1

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  • DOI: https://doi.org/10.1007/s11999-008-0430-1

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