模块化全膝关节置换术中的机械辅助锥形腐蚀
Mechanically assisted taper corrosion in modular TKA.
作者信息
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
机构信息
Implant Research Center, Drexel University, Philadelphia, Pennsylvania.
Biomedical and Chemical Engineering, Syracuse University, Syracuse, New York.
出版信息
J Arthroplasty. 2014 Sep;29(9 Suppl):205-8. doi: 10.1016/j.arth.2013.12.034. Epub 2014 May 28.
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.
本研究的目的是描述模块化全膝关节置换（TKA）组件中锥度损伤的发生率。198个模块化组件在植入3.9±4.2年后进行了翻修。使用半定量4分评分系统对模块化组件的微动腐蚀情况进行评估。将设计特征和患者信息作为微动腐蚀损伤的预测因素进行评估。在模块化股骨组件的101个锥度中有94个、模块化胫骨组件的97个锥度中有90个观察到轻至重度微动腐蚀（评分≥2）。合金配对组合（p=0.03）、锥度设计（p<0.001）和组件类型（p=0.02）与锥度腐蚀有关。本研究结果支持了TKA中存在锥度腐蚀的假设。然而，其临床意义仍不明确。
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