无明显金属对金属关节连接的骨水泥型钛合金全膝关节置换术中的金属沉着症
Metallosis in cemented titanium alloy total knee arthroplasty without apparent metal-on-metal articulation.
作者信息
Ho James, Mahajan John, Taylor Martin, Byers Ashlyn, Arauz Paul, Kwon Young-Min
机构信息
Massachusetts General Hospital Department of Orthopaedic Surgery, United States.
Massachusetts General Hospital Department of Pathology, United States.
出版信息
Knee. 2018 Aug;25(4):728-731. doi: 10.1016/j.knee.2018.04.013.
BACKGROUND
Metallosis is an uncommon phenomenon observed in late failures of cemented total knee arthroplasty (TKA), and it is rarely seen in the absence of metal-on-metal articulation.
METHODS
We report the case of a TKA patient with cemented titanium-alloy components and a polyethylene patella that was revised for early loosening with intra-operative severe metallosis.
RESULTS
We found that loosening and severe metallosis were associated with methacrylate particle abrasion on titanium alloy surfaces.
CONCLUSION
Serum titanium ion level measurement may be helpful in the workup of a painful TKA with titanium-alloy components in order to establish a diagnosis.
背景
金属沉着病是在骨水泥型全膝关节置换术（TKA）晚期失败中观察到的一种罕见现象，在非金属对金属关节的情况下很少见。
方法
我们报告了一例使用骨水泥型钛合金组件和聚乙烯髌骨的TKA患者，该患者因术中严重金属沉着病导致早期松动而进行翻修。
结果
我们发现松动和严重金属沉着病与钛合金表面的甲基丙烯酸酯颗粒磨损有关。
结论
测量血清钛离子水平可能有助于对使用钛合金组件的疼痛性TKA进行检查，以明确诊断。
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