内底材料硬度对人脚的生物力学影响:有限元素分析
Renbiao Lin1, Xu Tao2, Guanghui Wang2
1Dehua County Hospital, Quanzhou, Fujian, China.
Scientific reports
|December 29, 2025
概括
增加内的刚度减少了脚的应力和位移,观察到的最佳效益高达大约3000MPa. 这一发现有助于设计有效的功能内,以提供个性化的脚支持和预防伤害.
科学领域:
- 生物力学 生物力学
- 生物材料工程 生物材料工程
- 整形器械和假肢
背景情况:
- 功能性内用于管理脚部压力,并提供中间门支.
- 内底材料刚度对足部负荷的精确生物力学影响仍然不完全理解.
研究的目的:
- 通过有限元素分析 (FEA) 研究内材料刚度和足部组织负荷之间的关系.
- 建立一个理论框架,以优化个性化的内设计和临床实施.
主要方法:
- 从CT扫描中开发了一个健康的男性脚和内的3D FEA模型.
- 参数分析探讨了在静态姿势和动态步态条件下不同内弹性模块 (100500,000 MPa) 的影响.
- 模型验证是通过将模拟的脚下压力与实验测量进行比较来进行的,显示了2%的相对误差.
主要成果:
- 增加的内硬度显著降低了脚部位移 (48.0%),峰值脚下应力 (47.5%),脚应力 (30.8%),和半足应力 (20.8%).
- 当弹性模量超过大约3000MPa时,生物机械效益趋于平稳,这表明边际效应正在减少.
- 在模拟中,在中部部区域一致确定了高压力区域.
结论:
- 在各种负载条件下,确定了内硬度和足部生物力学之间的定量关系.
- 研究结果支持使用特定的刚度范围 (高达3000MPa) 用于功能内,以最大限度地提高生物机械效益.
- 这项研究提供了个性化内设计的证据,以防止软组织过载并增强临床应用.
相关概念视频
01:11Bending of Members Made of Several Materials
539
In analyzing a structural member composed of two different materials with identical cross-sectional areas, it is crucial to understand how their distinct elastic properties affect the member's response under load. The analysis involves assessing stress and strain distributions using the transformed section concept, which accounts for variations in material properties.
Hooke's Law determines stress in each material, stating that stress is proportional to strain but varies due to each material's...
Hooke's Law determines stress in each material, stating that stress is proportional to strain but varies due to each material's...
539
01:18Indeterminate Structure
1.3K
Indeterminate structures refer to structures where internal forces and reactions cannot be determined using only the equations of static equilibrium. Indeterminate structures have more unknown forces and reaction forces than equations of static equilibrium that can be used to determine them. Indeterminate structures are often used in engineering to create complex, efficient, and aesthetically pleasing structures. There are various types of indeterminate structures used in engineering and...
1.3K
01:16Flexural Stress
654
When analyzing bending in symmetric members, it's crucial to understand how stresses distribute when subjected to bending moments. This stress distribution is effectively described by applying fundamental mechanics and material science principles, particularly Hooke's Law for elastic materials.
Hooke's Law states that within the material's elastic limits, stress is directly proportional to strain. In a member experiencing a bending moment, the strain at any point is relative to its distance...
Hooke's Law states that within the material's elastic limits, stress is directly proportional to strain. In a member experiencing a bending moment, the strain at any point is relative to its distance...
654