Midterm Results with the PFC Sigma Total Knee Arthroplasty System

David F. Dalury, Ricardo A. Gonzales, Mary Jo Adams, Thomas A. Gruen, Kathy Trier

Research output: Contribution to journalArticlepeer-review

32 Scopus citations


We prospectively studied 207 consecutive patients (284 knees) undergoing total knee arthroplasty (June 1996 to December 1997) with a cemented tricompartmental Sigma PFC (DePuy Orthopaedics, Warsaw, Ind) total knee arthroplasty via a standard procedure (median follow-up, 87 months). Cruciate-retaining (272 knees, 96%) and cruciate-substituting (12, 4%) implants were used. There was one revision secondary to a ligament disruption after a fall. No implants were radiographically loose or at risk for loosening. Radiolucencies (none >2 mm or progressive) were shown on anteroposterior (7% of medial tibias) and lateral (17% of posterior femora) radiographs. Knee Society pain scores improved significantly (preoperative median, 20 points; postoperative median, 50 points [P < .001]). The PFC Sigma Knee system has excellent midterm durability.

Original languageEnglish (US)
Pages (from-to)175-181
Number of pages7
JournalJournal of Arthroplasty
Issue number2
StatePublished - Feb 1 2008


  • arthroplasty
  • knee
  • osteoarthritis
  • prosthesis design

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine


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