Progressive surgical dissection for tendon transposition affects length-force characteristics of rat flexor carpi ulnaris muscle

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Smeulders, Mark J.C. and Kreulen, Michiel and Hage, J. Joris and Baan, Guus C. and Huijing, Peter A. (2002) Progressive surgical dissection for tendon transposition affects length-force characteristics of rat flexor carpi ulnaris muscle. Journal of Orthopaedic Research, 20 (4). pp. 863-868. ISSN 0736-0266

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Abstract:Extramuscular connective tissue and muscular fascia have been suggested to form a myo-fascial pathway for transmission of forces over a joint that is additional to the generally accepted myo-tendinous pathway. The consequences of myo-fascial force transmission for the outcome of conventional muscle tendon transfer surgery has not been studied as yet. To test the hypothesis that surgical dissection of a muscle will affect its length-force characteristics, a study was undertaken in adult male Wistar rats. During progressive dissection of the flexor carpi ulnaris muscle, isometric length-force characteristics were measured using maximal electrical stimulation of the ulnar nerve. After fasciotomy, muscle active force decreased by approximately 20%. Further dissection resulted in additional decline of muscle active force by another 40% at maximal dissection. The muscle length at which the muscle produced maximum active force increased by approximately 0.7 mm (i.e. 14% of the measured length range) after dissection. It is concluded that, in rats, the fascia surrounding the flexor carpi ulnaris muscle is a major determinant of muscle length-force characteristics.
Item Type:Article
Copyright:© 2002 Wiley InterScience
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Link to this item:http://purl.utwente.nl/publications/71834
Official URL:http://dx.doi.org/10.1016/S0736-0266(01)00181-4
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