Klein Breteler M D, Spoor C W, Van der Helm F C
Nijmegen Institute for Cognition and Information, The Netherlands.
J Biomech. 1999 Nov;32(11):1191-7. doi: 10.1016/s0021-9290(99)00122-0.
An extensive set of muscle and joint geometry parameters was measured of the right shoulder of an embalmed male. For all muscles the optimal muscle fiber length was determined by laser diffraction measurements of sarcomere length. In addition, tendon length and physiological cross-sectional area were determined. The parameter set was needed to enhance the reliability of a computer model of the shoulder (Van der Helm, 1994a,b Journal of Biomechanics 27, 527-550, 551-569). With the model, an abduction of the arm was simulated in seven positions, at 30 degrees intervals. In each of the simulated arm positions, actual sarcomere lengths were calculated from the lengths of 104 muscle elements, distributed over 16 shoulder muscles. For most muscle elements, the simulated abduction appeared to take place within the sarcomere length range in which the muscle elements can exert force. The muscle elements can then act on the ascending limb as well as on the plateau and on the descending limb of the relative force-length curves of sarcomeres. The produced data set is not only important for the refinement of shoulder modeling, but also for functional analyses of shoulder movements in general.
对一具防腐处理过的男性尸体的右肩测量了一系列广泛的肌肉和关节几何参数。对于所有肌肉，通过激光衍射测量肌节长度来确定最佳肌纤维长度。此外，还确定了肌腱长度和生理横截面积。该参数集对于提高肩部计算机模型的可靠性是必要的（范德·赫尔姆，1994a，b《生物力学杂志》27，527 - 550，551 - 569）。利用该模型，以30度间隔在七个位置模拟了手臂外展。在每个模拟的手臂位置，根据分布在16块肩部肌肉中的104个肌肉单元的长度计算实际肌节长度。对于大多数肌肉单元，模拟的外展似乎发生在肌肉单元能够发力的肌节长度范围内。然后，肌肉单元可以作用于肌节相对力 - 长度曲线的上升段、平台段和下降段。所产生的数据集不仅对于完善肩部建模很重要，而且对于一般肩部运动的功能分析也很重要。
