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Musculotendon excursion potential, tendon slack and muscle fibre length : the interaction of the canine gastrocnemius muscle and tendon

(2018) JOURNAL OF ANATOMY. 233(4). p.460-467
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Abstract
Although the form-function relation of muscles and tendons has been studied extensively, little invivo data exist on the musculotendon properties of the gastrocnemius complex in dogs. Using a combination of ultrasound and 3D motion tracking, musculotendon parameters were obtained invivo from the lateral gastrocnemius muscle and the gastrocnemius tendon in nine healthy Labrador Retrievers. These parameters include musculotendon length and excursion potential, tendon slack length, muscle belly length, muscle fibre length, pennation angle and architectural index. This study also examined the variation of muscle and tendon length contributions to musculotendon length, as well as the relation between musculotendon excursion potential and muscle fibre length or tendon length. To facilitate comparison between dog breeds, the femur length as a potential scaling parameter was examined. In the Labrador gastrocnemius musculotendon complex, the tendon contributes 41% (+/- 9%) of musculotendon length. In longer musculotendon complexes, the contribution of the muscle belly increases while the tendon contribution decreases. Longer muscle belly and musculotendon complexes were, however, associated with shorter muscle fibres. No significant relations were found between musculotendon excursion potential and muscle fibre length or tendon slack length, and femur length did not prove to be a reliable scale factor for the length-related musculotendon parameters examined in this study. Longer musculotendon complexes exhibit relatively longer muscle bellies, which are in turn associated with shorter muscle fibre lengths. This trade-off between gastrocnemius muscle belly length and muscle fibre length might have the advantage that muscle volume stays constant regardless of the length of the limbs.
Keywords
dog, excursion, gastrocnemius, muscle, tendon, LIMB, ULTRASONOGRAPHY, ULTRASOUND, MOTION, SYSTEM

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Chicago
Dries, Billy, Benedicte Vanwanseele, Ilse Jonkers, Walter Dingemanse, Jos Vander Sloten, Aquilino Villamonte Chevalier, Elke Van der Vekens, et al. 2018. “Musculotendon Excursion Potential, Tendon Slack and Muscle Fibre Length : the Interaction of the Canine Gastrocnemius Muscle and Tendon.” Journal of Anatomy 233 (4): 460–467.
APA
Dries, Billy, Vanwanseele, B., Jonkers, I., Dingemanse, W., Vander Sloten, J., Villamonte Chevalier, A., Van der Vekens, E., et al. (2018). Musculotendon excursion potential, tendon slack and muscle fibre length : the interaction of the canine gastrocnemius muscle and tendon. JOURNAL OF ANATOMY, 233(4), 460–467.
Vancouver
1.
Dries B, Vanwanseele B, Jonkers I, Dingemanse W, Vander Sloten J, Villamonte Chevalier A, et al. Musculotendon excursion potential, tendon slack and muscle fibre length : the interaction of the canine gastrocnemius muscle and tendon. JOURNAL OF ANATOMY. 2018;233(4):460–7.
MLA
Dries, Billy, Benedicte Vanwanseele, Ilse Jonkers, et al. “Musculotendon Excursion Potential, Tendon Slack and Muscle Fibre Length : the Interaction of the Canine Gastrocnemius Muscle and Tendon.” JOURNAL OF ANATOMY 233.4 (2018): 460–467. Print.
@article{8582378,
  abstract     = {Although the form-function relation of muscles and tendons has been studied extensively, little invivo data exist on the musculotendon properties of the gastrocnemius complex in dogs. Using a combination of ultrasound and 3D motion tracking, musculotendon parameters were obtained invivo from the lateral gastrocnemius muscle and the gastrocnemius tendon in nine healthy Labrador Retrievers. These parameters include musculotendon length and excursion potential, tendon slack length, muscle belly length, muscle fibre length, pennation angle and architectural index. This study also examined the variation of muscle and tendon length contributions to musculotendon length, as well as the relation between musculotendon excursion potential and muscle fibre length or tendon length. To facilitate comparison between dog breeds, the femur length as a potential scaling parameter was examined. In the Labrador gastrocnemius musculotendon complex, the tendon contributes 41\% (+/- 9\%) of musculotendon length. In longer musculotendon complexes, the contribution of the muscle belly increases while the tendon contribution decreases. Longer muscle belly and musculotendon complexes were, however, associated with shorter muscle fibres. No significant relations were found between musculotendon excursion potential and muscle fibre length or tendon slack length, and femur length did not prove to be a reliable scale factor for the length-related musculotendon parameters examined in this study. Longer musculotendon complexes exhibit relatively longer muscle bellies, which are in turn associated with shorter muscle fibre lengths. This trade-off between gastrocnemius muscle belly length and muscle fibre length might have the advantage that muscle volume stays constant regardless of the length of the limbs.},
  author       = {Dries, Billy and Vanwanseele, Benedicte and Jonkers, Ilse and Dingemanse, Walter and Vander Sloten, Jos and Villamonte Chevalier, Aquilino and Van der Vekens, Elke and Polis, Ingeborgh and Vanderperren, Katrien and van Bree, Henri and Gielen, Ingrid},
  issn         = {0021-8782},
  journal      = {JOURNAL OF ANATOMY},
  language     = {eng},
  number       = {4},
  pages        = {460--467},
  title        = {Musculotendon excursion potential, tendon slack and muscle fibre length : the interaction of the canine gastrocnemius muscle and tendon},
  url          = {http://dx.doi.org/10.1111/joa.12845},
  volume       = {233},
  year         = {2018},
}

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