The influence of femoral component design in the elimination of patellar clunk in posterior-stabilized total knee arthroplasty

Henry D. Clarke, Robin Fuchs, Giles R. Scuderi, Edward L. Mills, William N. Scott, John N. Insall

Research output: Contribution to journalArticle

33 Scopus citations

Abstract

Patellar clunk occurs after posterior-stabilized total knee arthroplasty and is believed to be a design-related complication. This study was undertaken to define the incidence of patellar clunk with an optimized third-generation, posterior-stabilized prosthesis. One hundred ninety three patients with 238 knees were evaluated at a minimum of 2 years after primary total knee arthroplasty with a cemented, NexGen Legacy Posterior-Stabilized prosthesis (Zimmer, Warsaw, Ind). The mean follow-up was 48 months (range, 24-72 months). No patient manifested symptoms of patellar clunk or underwent surgery for any patello-femoral problem. These results support prior evidence that femoral component design is the primary cause of patellar clunk and that modifications incorporated into this third-generation, posterior-stabilized prosthesis has eliminated the problem.

Original languageEnglish (US)
Pages (from-to)167-171
Number of pages5
JournalJournal of Arthroplasty
Volume21
Issue number2
DOIs
StatePublished - Feb 1 2006

Keywords

  • Complications
  • Patellar clunk
  • Results
  • Total knee arthroplasty

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine

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