扩展的有限元分析,用于第2和第3足骨在推出过程中的应力骨折
1University of Michigan and Shanghai Jiao Tong University Joint Institute, Shanghai Jiao Tong University, Shanghai, China.
概括
甲足压力骨折 (MSF) 在运动员中很常见. 这项研究确定了在推开过程中增加第二和第三MSF风险的特定脚姿势和负载,为预防提供了指导.
科学领域:
- 生物力学 生物力学
- 运动医学 运动医学
- 整形外科 整形外科 整形外科
背景情况:
- 大足压力骨折 (MSF),特别是在第二和第三大足中,在运动员中很普遍.
- 目前的伤害预防策略并没有专门针对MSF,因为对引起因素的理解有限.
- 识别高风险的加载条件和姿势在步行过程中对于开发有针对性的预防计划至关重要.
研究的目的:
- 调查可能危险的负载和脚姿势,这些可能会在走路的推开阶段导致足骨压力骨折.
- 为风险运动员开发MSF特定的伤害预防计划提供数据驱动的见解.
主要方法:
- 使用有限元模型 (FEM) 通过三点曲测试校准,并通过峰值脚下压力和断裂力测量验证.
- 模拟的MSF使用扩展有限元素方法对十个不同的脚和脚配置.
- 分析纯粹的垂直负载和复杂的负载,包括在推开阶段的脚变动/反转.
主要成果:
- FEM模型的校准显示了3.05%的误差;验证结果分别为18%和30%的峰值脚下压力和断裂力.
- 纯的垂直负载表明,在30%的推出率下,第二足的MSF潜力更高,而在70%的推出率下,第三足的MSF潜力更高.
- 脚逆转/逆转分析发现30°脚逆转在70%的推开时是第三足骨MSF最危险的姿势.
结论:
- 该研究成功地在各种负载条件下模拟了MSF,提供了有关高风险场景的有价值数据.
- 特定的推开百分比和脚姿势 (例如30°变动) 显著增加了第二和第三足骨压力骨折的风险.
- 结果为运动员和临床医生提供了一份实用指南,以避免导致MSF的姿势和负载.
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