Mechanically Assisted Taper Corrosion in Modular TKA

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

来源：Journal of Arthroplasty, 2014, 29(9): 205-208.

DOI：10.1016/j.arth.2013.12.034

• TKA
• corrosion
• fretting
• modularity
• retrieval

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 %26gt;= 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 %26lt; 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.

• 出版日期2014-9