Mechanically Assisted Taper Corrosion in Modular TKA

Christina M. Arnholt, Daniel W. MacDonald, Mariya Tohfafarosh, Jeremy L. Gilbert, Clare M. Rimnac, Steven M. Kurtz, Gregg Klein, Michael A. Mont, Javad Parvizi, Harold E. Cates, Gwo Chin Lee, Arthur Malkani, Mattheuw Kraay

Research output: Contribution to journalArticlepeer-review

37 Scopus citations


The purpose of this study was to characterize the prevalence of taper damage in modular TKA components. One hundred ninety-eight modular components were revised after 3.9 ± 4.2 years of implantation. Modular components were evaluated for fretting corrosion using a semi-quantitative 4-point scoring system. Design features and patient information were assessed as predictors of fretting corrosion damage. Mild-to-severe fretting corrosion (score ≥ 2) was observed in 94/101 tapers on the modular femoral components and 90/97 tapers on the modular tibial components. Mixed alloy pairs (p = 0.03), taper design (p < 0.001), and component type (p = 0.02) were associated with taper corrosion. The results from this study supported the hypothesis that there is taper corrosion in TKA. However the clinical implications remain unclear.

Original languageEnglish (US)
JournalJournal of Arthroplasty
StateAccepted/In press - 2014


  • corrosion
  • fretting
  • modularity
  • retrieval
  • TKA

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine


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