Rainey Joshua P, Gililland Jeremy M, Peters Christopher L, Archibeck Michael J, Anderson Lucas A, Pelt Christopher E
Department of Orthopaedic Surgery, University of Utah, Salt Lake City, UT, USA.
Arthroplast Today. 2023 Jul 13;22:101167. doi: 10.1016/j.artd.2023.101167. eCollection 2023 Aug.
Metallosis and corrosion have been associated with metal-on-metal and modular total hip arthroplasty but are rarely described in the setting of primary or revision total knee arthroplasty (TKA). In this series, we report on cases of metallosis due to mechanically assisted crevice corrosion at modular junctions of machined trunnion-bore tapers in a revision TKA system with metaphyseal sleeves. The unique design of metal modular junctions used in sleeve-based revision TKA, along with potential patient and surgical factors, may predispose these designs to fretting, corrosion, and adverse reaction to metal debris. We now consider metallosis and corrosion in the workup of painful or failed revision TKAs with sleeves. Future studies that investigate the incidence of this phenomenon may be warranted.
金属沉着症和腐蚀与金属对金属及模块化全髋关节置换术有关，但在初次或翻修全膝关节置换术（TKA）中很少被描述。在本系列研究中，我们报告了在一个带有干骺端套筒的翻修TKA系统中，机加工耳轴-孔锥度的模块化连接处因机械辅助缝隙腐蚀导致金属沉着症的病例。基于套筒的翻修TKA中使用的金属模块化连接处的独特设计，以及潜在的患者和手术因素，可能使这些设计易于发生微动、腐蚀以及对金属碎屑产生不良反应。我们现在在对有套筒的疼痛性或失败的翻修TKA进行检查时考虑金属沉着症和腐蚀。未来可能需要开展研究来调查这种现象的发生率。
