使用Ti6Al4V和CoCrMo合金的患者特定的关节假肢的生物力学比较:有限元分析
Ezgi Yüceer-Çetiner1, Yasin Doğu2, Hakan Yurten3
1Department of Oral and Maxillofacial Surgery, School of Dental Medicine, Bahcesehir University, Istanbul 34357, Turkey.
Materials (Basel, Switzerland)
|November 13, 2025
概括
合金 (Ti6Al4V) 在关节 (TMJ) 置换方面显示出比- (CoCrMo) 更好的生物机械性能. 有限元分析表明,Ti6Al4V提供了更有利的负载转移和更低的应力,减少了患者特定假肢的机械过载风险.
科学领域:
- 生物材料科学 生物材料科学
- 整形外科工程 整形外科工程
- 生物力学 生物力学
背景情况:
- 最终阶段的关节 (TMJ) 疾病往往需要完全的关节置换.
- 生物材料的选择对于TMJ假肢的长期成功至关重要.
- 合金 (Ti6Al4V) 和--- (CoCrMo) 是常见的植入物材料,但它们在患者特异性TMJ假肢中的比较生物力学性能需要进一步研究.
研究的目的:
- 评估和比较由Ti6Al4V和CoCrMo合金制造的定制关节 (TMJ) 假肢的机械反应.
- 通过有限元分析 (FEA) 评估这些合金对患者特异性TMJ置换的生物力学适用性.
主要方法:
- 从计算机断层扫描 (CT) 数据开发出一个三维下模型.
- 针对患者的TMJ假肢使用SolidWorks设计,并在ANSYS Workbench中进行分析.
- 通过施加代表肌肉插入的力量来模拟生理负荷条件.
主要成果:
- Ti6Al4V 假肢模型经历了192.18 MPa (部部件) 和92.004 MPa (部件) 的最大·米塞斯应力.
- CoCrMo 假肢模型显示了更高的应力:204.31 MPa (下) 和 94.182 MPa (骨).
- 两种合金均表现出类似的应力分布模式,但Ti6Al4V导致应力大小较低.
结论:
- 与TMJ假肢的CoCrMo相比,Ti6Al4V表现出更有利的负载传递特性.
- 使用Ti6Al4V可以降低患者特异性TMJ置换器关节部件机械过载的风险.
- FEA是指导合金选择和优化患者特异性TMJ假肢设计的宝贵工具.
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