Dao Tien Tuan, Marin Frédéric, Ho Ba Tho Marie Christine
CNRS UMR 6600 Biomécanique et Bioingénierie, Université de Technologie de Compiègne, Compiègne, France.
Annu Int Conf IEEE Eng Med Biol Soc. 2009;2009:5251-4. doi: 10.1109/IEMBS.2009.5334087.
Modelling is necessary to understand and evaluate the musculoskeletal system of the human body. Most of the developed models used anthropometrical and geometrical parameters of the bones and muscles from the literature. The aim of the present work was to study the sensitivity of anthropometrical (segment mass) and geometrical (physiologic cross-sectional area of the muscle) parameters on musculoskeletal model of the lower limbs for simulation of the gait. An inverse dynamic analysis was performed to activate the joints and muscles. Then a direct dynamic analysis was carried out with active joints and muscles. The influences of these parameters on the kinematics and kinetics simulation results were reported. The obtained results show an influence of these parameters on the simulation results (maximal relative error varying from 2 to 75%). These results suggest subject specific parameters to be considered.
建模对于理解和评估人体肌肉骨骼系统是必要的。大多数已开发的模型使用了文献中骨骼和肌肉的人体测量学和几何参数。本研究的目的是研究人体测量学参数（节段质量）和几何参数（肌肉的生理横截面积）对下肢肌肉骨骼模型在步态模拟中的敏感性。进行了逆动力学分析以激活关节和肌肉。然后对激活的关节和肌肉进行了正动力学分析。报告了这些参数对运动学和动力学模拟结果的影响。获得的结果表明这些参数对模拟结果有影响（最大相对误差在2%到75%之间变化）。这些结果表明需要考虑个体特定参数。
