Contribution of individual quadriceps muscles to knee joint mechanics

Author:

Han Seong-won1ORCID,Sawatsky Andrew1,de Brito Fontana Heiliane2,Herzog Walter1ORCID

Affiliation:

1. Faculty of Kinesiology, University of Calgary, Calgary, Canada

2. Morphological Sciences Department, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil

Abstract

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.

Funder

Natural Sciences and Engineering Research Council of Canada

Canada Research Chairs

Killam Trusts

Canadian Institutes of Health Research

Publisher

The Company of Biologists

Subject

Insect Science,Molecular Biology,Animal Science and Zoology,Aquatic Science,Physiology,Ecology, Evolution, Behavior and Systematics

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