运行脚撞击模式对骨软骨应力影响的有限元分析
Shiqi Yu1, Yuwen Shangguan2, Peng Yuan1
1Shanghai University of Sport, Shanghai, China.
The Knee
|February 13, 2026
概括
前脚冲击 (FFS) 运行与后脚冲击 (RFS) 相比,减少了带软骨的峰值压力和应变. 然而,FFS在跑步过程中不会改变应力分布模式或皮带运动.
科学领域:
- 生物力学 生物力学
- 整形外科 整形外科 整形外科
- 运动医学 运动医学
背景情况:
- 跑步的生物力学显著影响下肢关节负荷.
- 椎骨的健康对于膝盖功能和寿命至关重要.
- 了解脚撞击模式对腿骨关节机械学的影响,对于预防伤害至关重要.
研究的目的:
- 为了比较前脚冲击 (FFS) 和后脚冲击 (RFS) 在骨软骨上运行的影响.
- 通过有限元素分析分析带软骨应力,应变,接触区域和运动.
主要方法:
- 健康的跑步者被分为FFS (n=12) 和RFS (n=12) 两组,根据他们的习惯性脚踏.
- 在以3米/秒的速度运行时收集了生物机械数据.
- 一个3D有限元模型的骨骨关节被开发和加载使用主体特定的生物力学模拟软骨行为.
主要成果:
- 前脚冲击跑步显示较后脚冲击跑步,较后脚冲击跑步,较后脚冲击跑步,较后脚冲击跑步,较后脚冲击跑步,较后脚冲击跑步,较后脚冲击跑步,较后脚冲击跑步,较后脚冲击跑步,较后脚冲击跑步,较后脚冲击跑步,较后脚冲击跑步.
- 在FFS和RFS之间,在峰值膝盖角度或四头肌肌力方面没有发现显著差异.
- 骨运动模式在两组之间是相似的,压力主要集中在侧侧软骨中.
结论:
- 前脚的冲击跑步减少了峰值的机械应力和带软骨的压力.
- 压力分布和骨运动的基本模式在很大程度上独立于足部撞击模式.
- 未来的伤害预防策略应考虑针对性干预的应力大小和时空分布.
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