Predicting the Metal Ion Release From CoCrMo Alloy–UHMWPE Tribocorrosion Contacts

IF 2.9 3区工程技术 Q2 ENGINEERING, CHEMICAL Tribology Letters Pub Date : 2024-06-22 DOI:10.1007/s11249-024-01880-2

Shoufan Cao, Yunkun Wang, Zhanpeng Yang, Yi Liang, Yuanxun Fan

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Abstract

Due to tribocorrosion, metal ions are released from metallic components in hip implants and cause adverse reactions. The adverse reaction sensitivity to metal ions showed high dependency on individual patient and it has been recognized that adverse reactions even occur in patients with metal-on-polymer articulations. In this study, based on a tribocorrosion model for CoCrMo alloy, a lubricated wear accelerated corrosion model was developed for CoCrMo alloy–UHMWPE tribocorrosion contacts. The model was verified and calibrated using laboratory tribometer experimental results and was used to predict metal ion release from CoCrMo alloy heads in MoP hip joints. The results showed correspondence between model predicted wear accelerated corrosion and literature reported material loss of CoCrMo alloy heads in MoP hip joints tested using hip joint simulators. This model provides a tool to predict the level of metal ions released from MoP hip joints and has the potential to be used by medical doctors to evaluate the risk of adverse reactions for patients planned to receive a MoP hip implant.

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预测 CoCrMo 合金-超高分子量聚乙烯摩擦腐蚀接触点的金属离子释放量

由于摩擦腐蚀，髋关节植入物中的金属部件会释放出金属离子，从而引起不良反应。不良反应对金属离子的敏感性与患者的个体差异有很大关系，而且人们已经认识到，不良反应甚至会发生在使用金属-聚合物关节的患者身上。本研究以 CoCrMo 合金摩擦腐蚀模型为基础，建立了 CoCrMo 合金-超高分子量聚乙烯摩擦腐蚀接触的润滑磨损加速腐蚀模型。该模型利用实验室摩擦磨损试验结果进行了验证和校准，并用于预测 MoP 髋关节中 CoCrMo 合金头的金属离子释放量。结果显示，模型预测的磨损加速腐蚀与文献报道的使用髋关节模拟器测试的 MoP 髋关节中 CoCrMo 合金头的材料损耗之间存在对应关系。该模型为预测 MoP 髋关节释放的金属离子水平提供了一种工具，可用于医生评估计划接受 MoP 髋关节植入物的患者出现不良反应的风险。

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来源期刊

Tribology Letters 工程技术-工程：化工

CiteScore

5.30

自引率

9.40%

发文量

116

审稿时长

2.5 months

期刊介绍： Tribology Letters is devoted to the development of the science of tribology and its applications, particularly focusing on publishing high-quality papers at the forefront of tribological science and that address the fundamentals of friction, lubrication, wear, or adhesion. The journal facilitates communication and exchange of seminal ideas among thousands of practitioners who are engaged worldwide in the pursuit of tribology-based science and technology.