Biomechanical analysis of the meniscus and cartilage of the knee during a typical Tai Chi movement-brush-knee and twist-step
Biomechanical analysis of the meniscus and cartilage of the knee during a typical Tai Chi movement-brush-knee and twist-step
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典型太极拳动作——刷膝、扭步过程中膝关节半月板和软骨的生物力学分析
DOI：
10.3934/mbe.2019042
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发表时间：
2019-01-01
影响因子：
2.6
通讯作者：
Niu, Wenxin
中科院分区：
文献类型：
--
作者：
Li, Yan;Wang, Kuan;Niu, Wenxin
本研究旨在分析膝关节软骨和半月板对典型太极拳（TC）运动--刷膝和扭步（BKTS）的生物力学响应。运动学和动力学数据记录，而有经验的TC从业者进行正常的步行，慢跑和BKTS。然后将动力学数据导入到膝关节的经验证的有限元模型中，以检查关节软骨和半月板的生物力学响应。与步行和慢跑相比，BKTS运动在膝关节活动范围（ROM）方面表现出更大的增加。矢状面的ROM为56度（步行）、38度（慢跑）和93度（BKTS）。在冠状面上，膝关节ROM为8 °（步行）、11 °（慢跑）和28 °（BKTS）。在水平面上，活动度分别为17 °（步行）、15 °（慢跑）和29 °（BKTS）。有限元模拟表明，压力接触应力在步行和慢跑过程中比BKTS更集中，这与软骨和半月板上记录的较低峰值接触应力一致。总之，TC运动对半月板和软骨产生了更温和的应力状态，同时也需要更大的膝关节ROM。与步行和慢跑相比，练习TC可能具有更低的膝关节损伤风险。
This study aimed to analyze the biomechanical response of the knee cartilage and meniscus to a typical Tai Chi (TC) movement, brush-knee and twist-step (BKTS). Kinematic and kinetic data was recorded while an experienced TC practitioner performed normal walking, jogging and BKTS. The kinetic data were then imported into a validated finite element model of the knee joint to examine the biomechanical response of the articular cartilage and meniscus. Compared with walking and jogging, the BKTS movement showed a greater increase in the range of motion (ROM) of the knee. The ROM in the sagittal plane was 56 degrees (walking), 38 degrees (jogging) and 93 degrees (BKTS). In coronal plane, the knee ROM was 8 degrees (walking), 11 degrees (jogging) and 28 degrees (BKTS). And in horizontal plane the ROM was 17 degrees (walking), 15 degrees (jogging) and 29 degrees (BKTS). The finite element simulation demonstrated that the pressure contact stress is much more concentrated during walking and jogging than BKTS, which is consistent with the lower peak contact stresses recorded on the cartilage and meniscus. In conclusion, the TC movement produced a gentler stress state on the meniscus and cartilage, while also requiring a greater knee ROM. Practicing TC may have a lower risk of knee joint injury compared to walking and jogging.