Faculty of Kinesiology, University of Calgary, Calgary, AB, Canada, T2N 1N4.
Morphological Sciences Department, Federal University of Santa Catarina, Florianópolis, Santa Catarina, 88040-900 Brazil.
J Exp Biol. 2019 Mar 27;222(Pt 6):jeb188292. doi: 10.1242/jeb.188292.
Many attempts have been made to determine the contribution of individual muscles in an agonistic group to the mechanics of joints. However, previous approaches had the limitations that muscles often could not be controlled in a precise manner, that individual muscles in an agonistic group could not be activated individually, and that individual muscle contributions could not be measured in an actively contracting agonistic group. Here, we introduce a surgical approach that allows for controlled activation of individual muscles of an agonistic group. The approach is illustrated for the vastus lateralis (VL), vastus medialis (VM) and rectus femoris (RF) of the rabbit quadriceps femoris group. We provide exemplar results for potential applications of the approach, such as measuring the pressure distribution in the patellofemoral joint, and the torque-angle relationship of VL, VM and RF when activated individually and when the three muscles are activated simultaneously.
许多尝试已经被用来确定在拮抗肌群中各个肌肉对关节力学的贡献。然而，以前的方法有一些局限性，例如肌肉往往不能被精确地控制，拮抗肌群中的单个肌肉不能被单独激活，以及在主动收缩的拮抗肌群中无法测量单个肌肉的贡献。在这里，我们介绍一种可以控制拮抗肌群中单个肌肉激活的手术方法。该方法以兔股四头肌的股外侧肌（VL）、股中间肌（VM）和股直肌（RF）为例进行了说明。我们提供了该方法的潜在应用的示例结果，例如测量髌股关节的压力分布，以及单独激活 VL、VM 和 RF 以及同时激活这三块肌肉时的力矩-角度关系。
