The Journal of Arthroplasty
Volume 23, Issue 2 , Pages 216-219, February 2008

Extensor Mechanism Function in Single-Radius Vs Multiradius Femoral Components for Total Knee Arthroplasty

  • James Hall, MD

      Affiliations

    • Corresponding Author InformationReprint requests: Clifford W. Colwell Jr, MD, Shiley Center for Orthopaedic Research and Education at Scripps Clinic, 11025 North Torrey Pines Road, Suite 140, La Jolla, CA 92037.
    • ,
  • Steven N. Copp, MD

      Affiliations

    • Scripps Clinic, Division of Orthopaedic Surgery, La Jolla, California
    • ,
  • Wendy S. Adelson, MS

      Affiliations

    • Shiley Center for Orthopaedic Research and Education at Scripps Clinic, La Jolla, California
    • ,
  • Darryl D. D'Lima, MD

      Affiliations

    • Shiley Center for Orthopaedic Research and Education at Scripps Clinic, La Jolla, California
    • ,
  • Clifford W. Colwell Jr, MD

      Affiliations

    • Scripps Clinic, Division of Orthopaedic Surgery, La Jolla, California
    • Shiley Center for Orthopaedic Research and Education at Scripps Clinic, La Jolla, California

Received 20 September 2006; accepted 1 April 2007. published online 26 November 2007.

Abstract 

The early outcomes of 2 newer-generation posterior cruciate ligament-retaining fixed-bearing total knee arthroplasty (TKA) implant designs were assessed to determine if a single sagittal radius femoral design has an advantage in obtaining earlier knee range of motion and function when compared with a contemporary multiradius femoral design. Total knee arthroplasty patients were prospectively randomized to receive either a single sagittal radius femoral design (n = 50) or a multiradius femoral design (n = 50). Knee extensor mechanism function after TKA with either a single sagittal radius or multiradius implant was comparable in contemporary posterior cruciate ligament–retaining TKA designs.

Key words: total knee arthroplasty, extensor mechanism function, posterior cruciate ligament-retaining implant, multiradius implant, single sagittal radius implant

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 No benefits or funds were received in support of the study.

PII: S0883-5403(07)00193-3

doi:10.1016/j.arth.2007.04.001

The Journal of Arthroplasty
Volume 23, Issue 2 , Pages 216-219, February 2008

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