A dynamic model for simulating movements of the elbow, forearm, and wrist
A dynamic model for simulating movements of the elbow, forearm, and wrist
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DOI：
10.1016/0021-9290(96)00026-7
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发表时间：
1996-10-01
影响因子：
2.4
通讯作者：
Crago, PE
中科院分区：
文献类型：
--
作者：
Lemay, MA;Crago, PE
我们开发了一个上肢的动态模型来模拟前臂和手腕的运动。该模型基于手臂的骨骼结构，能够进行肘关节屈曲/伸展、前臂旋后、腕关节屈曲/伸展和桡/尺偏运动。运动是通过激活Hill型肌肉模型产生的，并且根据实验结果建模的被动力矩对关节运动施加限制。我们研究了肌肉输出力的敏感性，以及手腕屈曲/伸展运动的敏感性参数变化。肌腱松弛长度和肌纤维长度对肌肉输出和屈/伸腕运动的影响最大。该模型很好地捕捉了手腕处的力矩矢量的方向，但预测的力矩比刺激一名四肢瘫痪受试者的瘫痪肌肉所测得的力矩要高得多。版权所有（C）1996 Elsevier Science Ltd.
We developed a dynamic model of the upper extremity to simulate forearm and wrist movements. The model is based on the skeletal structure of the arm and is capable of elbow flexion/extension, forearm pronosupination, and wrist flexion/extension and radial/ulnar deviation movements. Movements are produced by activation of a Hill-type model of muscle, and limits on joint motion are imposed by passive moments modeled after experimental results. We investigated the muscle output force sensitivity, as well as wrist flexion/extension motion sensitivity to parameter variations. The tendon slack length and muscle fiber length were found to have the greatest influence on muscle output and flexion/extension wrist motion. The model captured the direction of the moment vectors at the wrist well, but predicted much higher moments than were measured by stimulating the paralyzed muscles of one tetraplegic subject. Copyright (C) 1996 Elsevier Science Ltd.