可打印功能分级的部植入物用于TAR:FE研究比较植入物材料,FGM特性和植入物设计
1Biomechanics Research Laboratory, School of Mechanical & Materials Engineering, Indian Institute of Technology Mandi, Kamand, Mandi, 175075, Himachal Pradesh, India.
Computers in biology and medicine
|May 26, 2024
概括
功能分级材料 (FGM) 部植入物通过减少应力屏蔽来增强全脚置换 (TAR). 具有低体积分数指数的功率定律FGM提供最佳性能,改善植入物寿命.
科学领域:
- 生物材料工程 生物材料工程
- 骨科生物力学 骨科生物力学
- 计算力学 计算力学 计算力学
背景情况:
- 完全关节置换 (TAR) 面临着诸如应力屏蔽和传统金属植入物 (Ti和CoCr) 的植入物骨微运动等挑战.
- 功能分级材料 (FGM) 提供可调整的刚性,以潜在地减轻这些问题.
- 优化FGM属性和植入物设计对于成功的TAR至关重要.
研究的目的:
- 评估FGM部植入物用于TAR,比较不同的材料,FGM特性和固定设计.
- 确定最有效的FGM组合和设计,以减少应力屏蔽和微运动.
- 为了提高整个脚置换植入物的寿命和耐用性.
主要方法:
- 完整的和植入的骨的3D模型的有限元素分析 (FEA).
- 使用 (Ti) 和酸 (HA) 的组合来建模FGM部植入物.
- 调查指数,功率和西格形材料分级规律,使用不同的体积分数指数,并分析基尔与茎固定设计.
主要成果:
- 与传统的Ti和CoCr植入物相比,FGM植入物表现出更高的性能.
- 动力法对女性生殖器官切割的发展最有效,显著减少了应力屏蔽.
- 使用功率定律和0.1体积分数指数的FGM植入物表现出最低的应力屏蔽和最小的植入物骨微运动.
- 基尔型固定设计对于FGM植入物来说比茎型设计更有利.
结论:
- 切肢部植入物有效地解决了在全脚置换中应力屏蔽的关键问题.
- 优化的FGM,特别是使用低体积分数指数的功率定律,提高了植入物性能.
- 研究结果表明,FGM可以显著提高TAR植入物的寿命和耐用性,为传统材料提供有希望的替代品.
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