The Journal of Arthroplasty
Volume 27, Issue 6 , Pages 1166-1170, June 2012

Effect of Femoral Component Design on Patellofemoral Crepitance and Patella Clunk Syndrome After Posterior-Stabilized Total Knee Arthroplasty

  • Benjamin M. Frye, MD

      Affiliations

    • Department of Orthopaedics, West Virginia University, Morgantown, West Virginia
    • Corresponding Author InformationReprint requests: Benjamin M. Frye, MD, Department of Orthopaedics, West Virginia University, Morgantown, WV 26506-9196.
    • ,
  • Mark W. Floyd, MD

      Affiliations

    • Department of Orthopaedics, West Virginia University, Morgantown, West Virginia
    • ,
  • Dahn C. Pham, BS

      Affiliations

    • West Virginia University School of Medicine, Morgantown, West Virginia
    • ,
  • John J. Feldman, BS

      Affiliations

    • West Virginia University School of Medicine, Morgantown, West Virginia
    • ,
  • Brian R. Hamlin, MD

      Affiliations

    • Magee Women's Hospital of The UPMC Health System, Pittsburgh, Pennsylvania

Received 18 May 2011; accepted 10 December 2011. published online 30 January 2012.

Abstract 

The purpose of this study was to determine if recent changes to the femoral component of a particular posterior-stabilized total knee prosthesis would affect the incidence of postoperative patellofemoral crepitance and patella clunk syndrome. One hundred eight total knee arthroplasties were performed with the conventional design; 136 were performed after the femoral component was changed. Complications were compared between the groups with an average follow-up of 17.7 months and 12.4 months, respectively. Thirteen knees with the conventional design (12%) were found to have patellofemoral complications; no complications were noted with the new design (P < .0001). Femoral components with a deep trochlear groove and smooth transition of the intercondylar box appear to better accommodate any peripatellar fibrous nodule that may form after total knee arthroplasty.

Keywords: patella, clunk, crepitance, total knee arthroplasty

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 The Conflict of Interest statement associated with this article can be found at doi:10.1016/j.arth.2011.12.009.

PII: S0883-5403(11)00687-5

doi:10.1016/j.arth.2011.12.009

The Journal of Arthroplasty
Volume 27, Issue 6 , Pages 1166-1170, June 2012

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