Leijnse J N, Kalker J J
Department of Plastic and Reconstructive Surgery, Erasmus University, Rotterdam, The Netherlands.
J Biomech. 1995 Mar;28(3):237-49. doi: 10.1016/0021-9290(94)00070-k.
The functioning of the lumbrical muscle in the human finger is difficult to visualise. This is mainly due to the fact that the origin and insertion of the lumbrical is on tendons of other motors (the deep flexor and the extensor assembly, respectively), instead of on bone. In this paper the functioning of the lumbrical in the human finger is kinematically investigated by explicitly considering the slackness or tautness of tendon parts which are in parallel or in series with the lumbrical, and by deriving from a standard finger model equivalent representations from which the functioning of the lumbrical is visually more clear. These models are used to review and interpret the results of previous studies. Further, it is indicated that the lumbrical is in an ideal position to contribute to the control of certain fast movements, as may be of importance for the musician, and that its role in other fast movements may be limited because of its large displacements (contraction speed).
人类手指中蚓状肌的功能很难直观呈现。这主要是因为蚓状肌的起点和止点位于其他肌肉（分别为指深屈肌和伸肌装置）的肌腱上，而非骨骼上。在本文中，通过明确考虑与蚓状肌平行或串联的肌腱部分的松弛或紧绷状态，并从标准手指模型推导出等效表示，从而从运动学角度研究了人类手指中蚓状肌的功能，这些等效表示能使蚓状肌的功能在视觉上更清晰。这些模型用于回顾和解释先前研究的结果。此外，研究表明蚓状肌处于一个理想位置，有助于控制某些快速动作，这对音乐家可能很重要，并且由于其较大的位移（收缩速度），它在其他快速动作中的作用可能有限。
