| 刘陆帅,潘正晔,李星漫,马运超.裸足跑步时不同触地方式下膝关节应力特征分析[J].中国康复医学杂志,2025,(1):53~60 |
| 裸足跑步时不同触地方式下膝关节应力特征分析 点此下载全文 |
| 刘陆帅 潘正晔 李星漫 马运超 |
| 北京师范大学体育与运动学院，北京市，100875 |
| 基金项目：教育部人文社会科学研究青年项目（19YJC890030） |
| DOI：10.3969/j.issn.1001-1242.2025.01.009 |
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| 摘要： |
| 摘要
目的：基于已验证的膝关节有限元模型，量化裸足跑步时不同触地方式对膝关节的影响，为跑步运动员减少运动损伤提供理论依据。
方法：采集22名受试者在4m/s±5%的速度下分别以前脚掌着地、中脚掌着地和后脚着地时的运动学和地反力数据，通过Visal3D逆动力学计算获取膝关节反作用力，基于膝关节三维有限元模型分别对3种触地过程进行数值仿真。
结果：①前足/中足触地模式与后足触地过程中的膝关节运动学特征存在显著性差异，使用中足触地时膝关节屈曲峰值较大；②与前足触地相比，裸足跑步过程中中足触地的方式会产生较小的垂直地反力峰值。在垂直地反力峰值时，中足触地模式下髌骨软骨接触应力峰值（4.83 MPa）和半月板接触应力峰值（5.98 MPa）与其他两种触地模式相比最小。
结论：在裸足跑步时，使用中足着地可能会减小膝关节的损伤风险，选用裸足跑进行康复训练时，建议采用中足触地方式。 |
| 关键词：裸足跑 膝关节 触地方式 有限元 生物力学 |
| Analysis of knee joint stress characteristics under different touchdown methods during barefoot running Download Fulltext |
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| College of PE and Sports， Beijing Normal University， Beijing， 100875 |
| Fund Project: |
| Abstract: |
| Abstract
Objective：To quantify the effects of different touchdown methods on the knee joint during barefoot running using a validated finite element model of the knee joint, providing a theoretical basis for reducing sports injuries in runners.
Method： Kinematics and ground reaction force data were collected from 22 participants during forefoot landing， midfoot landing and hindfoot landing at 4 m/s±5% respectively. Knee joint reaction forces were calculated using Visal3D inverse dynamics. The numerical simulations were performed for each of the three ground contact processes based on a 3D finite element model of the knee joint.
Result： There were significant kinematic differences in the knee joint during forefoot/midfoot touchdown mode and hindfoot touchdown， with a larger peak flexion when using midfoot touchdown. Compared to forefoot touchdown， the midfoot touchdown mode during barefoot running produced a smaller peak in vertical ground reaction force. At the peak vertical ground reaction force， the peak patellofemoral cartilage contact stress （4.83 MPa） and the peak meniscal contact stress （5.98 MPa） in the midfoot touchdown mode were the lowest compared to the other two touchdown modes.
Conclusion： When running barefoot, using a midfoot landing may reduce the risk of knee injury. It is recommended to use the midfoot touch pattern for rehabilitation involving barefoot running. |
| Keywords:barefoot running knee joint touchdown modes finite elements model biomechanics |
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