Why are total knees failing today? Etiology of total knee revision in 2010 and 2011

William C. Schroer, Keith R. Berend, Adolph V. Lombardi, C. Lowry Barnes, Michael P. Bolognesi, Michael E. Berend, Merrill A. Ritter, Ryan M. Nunley

Research output: Contribution to journalArticlepeer-review

279 Scopus citations

Abstract

Revision knee data from six joint arthroplasty centers were compiled for 2010 and 2011 to determine mechanism of failure and time to failure. Aseptic loosening was the predominant mechanism of failure (31.2%), followed by instability (18.7%), infection (16.2%), polyethylene wear (10.0%), arthrofibrosis (6.9%), and malalignment (6.6%). Mean time to failure was 5.9. years (range 10 days to 31. years). 35.3% of all revisions occurred less than 2. years after the index arthroplasty, 60.2% in the first 5. years. In contrast to previous reports, polyethylene wear is not a leading failure mechanism and rarely presents before 15. years. Implant performance is not a predominant factor of knee failure. Early failure mechanisms are primarily surgeon-dependent.

Original languageEnglish
Pages (from-to)116-119
Number of pages4
JournalJournal of Arthroplasty
Volume28
Issue number8 SUPPL
DOIs
StatePublished - Sep 2013

Keywords

  • Aseptic loosening
  • Failure
  • Instability
  • Total knee revision

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