Twenty-year survivorship of cementless anatomic graduated component total knee arthroplasty

Merrill A. Ritter, R. Michael Meneghini

Research output: Contribution to journalArticlepeer-review

66 Scopus citations


There is a renewed interest in cementless total knee arthroplasty (TKA) due to improved biomaterials, desire for decreased surgical times and the potential increased longevity. Seventy-three cementless TKAs (AGC, Biomet, Warsaw, Ind) were performed from 1984 to 1986. All components were implanted without cement and without screws and obtained minimum 10 years of follow-up. No patient was lost to follow-up. Fifteen failures occurred, including 12 failed metal-backed patellae, and survivorship for aseptic loosening of any component was 76.4% at 20 years. Two tibial components failed of aseptic loosening at 1.1 and 2.2 years. Excluding patella failures, the survivorship for the cementless tibial component was 96.8% at 20 years. There were no femoral component failures. After eliminating patella failures, this cementless monoblock tibial component without screws demonstrated excellent 20-year survivorship.

Original languageEnglish (US)
Pages (from-to)507-513
Number of pages7
JournalJournal of Arthroplasty
Issue number4
StatePublished - Jun 1 2010
Externally publishedYes


  • AGC
  • Cementless total knee replacement
  • Long-term
  • Survivorship

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine

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