关节假肢的定制设计:一种动力学方法,通过有限元分析进行评估
Manuel Mejía Rodríguez1, Octavio Andrés González-Estrada2, Hernán D Sánchez-Restrepo3
1Postgraduate student, School of Mechanical Engineering, Universidad del Valle, Cali, Colombia; and Director, 3D Medical Innovation SAS, Bogotá, Colombia.
The Journal of prosthetic dentistry
|March 22, 2025
概括
这项研究通过建立理想的动力中心来优化关节 (TMJ) 假肢设计,改善运动和应力分布,以获得更好的患者结果.
科学领域:
- 生物医学工程 生物医学工程
- 整形外科手术 整形外科手术
- 生物机械分析 生物机械分析
背景情况:
- 设计关节 (TMJ) 假肢面临挑战,因为缺乏标准化方法来确定假肢运动中心.
- 目前的TMJ假肢通常使用经验性放置,可能会损害功能和寿命,因为不考虑个性化的动力学参数.
研究的目的:
- 为定制TMJ假肢建立一个最佳的假肢运动中心位置.
- 改进TMJ假肢设计效率,运动精度和标准化,在患者特定的应用中使用不变的TMJ解剖标志.
主要方法:
- 从CT扫描中重建了一个患有TMJ功能障碍的患者的3DTMJ模型.
- 有限元分析模拟了机械反应,以由解剖参考指导的假肢动力学中心位置.
- 评估TMJ假肢基于骨机械特性和限制来复制自然关节运动.
主要成果:
- 优化的运动中心改善了前后背运动,并解决了翻译缺陷.
- 应力分析 (·米塞斯和最小主应力) 证实了材料耐受性内的结构稳定性.
- 展示了一致的应力分布和与自然TMJ动力学对齐,表明改善了假肢性能.
结论:
- 基于假肢动力学中心的设计方法提高了TMJ假肢中的动力学精度和生物机械功能.
- 这种方法为个性化TMJ假肢设计提供了一个标准化的框架,有可能提高寿命和功能.
- 建议使用更大的样本大小进行进一步研究,以验证临床适用性和长期益处.
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