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Title

Suturing versus immobilization of a muscle laceration. A morphological and functional study in a mouse model

Authors
Kasemkijwattana, C
Fu, F H
Huard, J
Moreland, M S
Published in The American Journal of Sports Medicine. 1999, vol. 27, no. 2, p. 222-9
Abstract Muscle laceration remains a difficult problem for orthopaedic surgeons. Despite many studies related to the muscle's ability to regenerate after muscle degeneration, very few reports are available regarding structural and functional recovery after skeletal muscle laceration. We developed an animal model of muscle laceration in mice, where the gastrocnemius muscles were reproducibly transected. We compared the effect of a surgical repair versus a short period of immobilization (5 days) on the muscle healing. The natural course of muscle recovery was monitored at several points after injury using histologic, immunohistochemical, and functional testing. In the injured muscle, we observed a high number of regenerating myofibers and development of fibrotic scar tissue. Suturing the lacerated muscle immediately after injury promoted better healing of the injured muscle and prevented the development of deep scar tissue in the lacerated muscle; conversely, immobilization resulted in slower muscle regeneration and the development of a large area of scar tissue. Tetanus strength 1 month after injury was 81% of control muscles for the sutured muscles, 35% for the lacerated muscles with no treatment, and 18% for the immobilized muscles. Based on this study, suturing a muscle laceration with a modified Kessler stitch results in the best morphologic and functional healing.
Keywords Analysis of VarianceAnimalsBiological MarkersDesmin/metabolismDisease Models, AnimalHumansImmobilizationMiceMuscle ContractionMuscle, Skeletal/injuriesSuturesVimentin/metabolismWound HealingWounds, Penetrating/surgery/therapy
Identifiers
PMID: 10102105
Full text
Article (Published version) (4.2 MB) - document accessible for UNIGE members only Limited access to UNIGE
Other version: http://ajs.sagepub.com/content/27/2/222.long
Structures
Research group Thérapie cellulaire et troubles musculo-squelettiques (960)
Citation
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MENETREY, Jacques et al. Suturing versus immobilization of a muscle laceration. A morphological and functional study in a mouse model. In: The American Journal of Sports Medicine, 1999, vol. 27, n° 2, p. 222-9. https://archive-ouverte.unige.ch/unige:72977

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Deposited on : 2015-06-03

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