等长收缩时食指肌力分析

MUSCULAR FORCE ANALYSIS OF INDEX FINGER DURING ISOMETRIC CONTRACTION

本文详尽深入地探讨了在等长收缩时食指肌力冗余问题的求解方法。分别采用二维和三维肌骨模型选用７ 类２１ 种优化目标函数，求得食指在进行按压动作时的肌肉作用力；在此基础上，分析了不同模型和不同的优化目标函数对肌力解的影响，得到了一些很有意义的结论，如：三维模型中不同目标函数的选择对肌力解的影响比在二维模型中小，浅层屈肌和深层屈肌作用力的之和基本不随优化目标函数的不同而改变。

This paper focuses on the redundant problem of muscular force analysis of index finger during a selected isometric contraction function static pressing. The optimization technique was adopted to solve the problem of muscular force indeterminacy. A total of twenty one objective functions of seven categories with different concentration of optimization were introduced into both 2 D and 3 D musculoskeletal biomechanics models for the determination of muscular forces of index finger. Furthermore, the effects of selection of objective function on the solutions of muscular force analysis were theoretically investigated. Some valuable conclusions were obtained, e.g.(1) the selection of objective function in 3 D model has less influence on solution than in 2 D model; and (2) the muscular forces summation of flexor digitorum profundus and flexor digitorum superficialis does not vary with the selection of objective function; whereas (3) the muscular forces of lumbrical and radial interosseous are very sensitive to the selection.