File:Soleus and tibialis anterior.png
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DescriptionSoleus and tibialis anterior.png |
English: Photographs of example muscles ((a and b) soleus and (c) tibialis anterior). Fibre pennation angles (PAs) were measured on the muscle surfaces (a) before they were dissected to allow a clear visualisation of the fibres deep within the muscle (b and c). The images were used to estimate PA as the angle (black arc) between the muscle fibre (blue line) and tendon/aponeurosis (dark red line). The tibialis anterior (c) is an example for a muscle with long fibres and small PA, whereas the soleus (a) is the muscle with the shortest fibres and the largest PA. The difference in architecture between the soleus surface (a) and deep within it (b) is also demonstrated. |
Date | Published online 2016 Sep 22 |
Source | Sopher RS, Amis AA, Davies DC, Jeffers JR. The influence of muscle pennation angle and cross-sectional area on contact forces in the ankle joint. J Strain Anal Eng Des. 2017;52(1):12–23. doi:10.1177/0309324716669250 https://journals.sagepub.com/doi/10.1177/0309324716669250 |
Author | Ran S Sopher, Andrew A Amis, D Ceri Davies, and Jonathan RT Jeffers |
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 17:53, 1 April 2020 | 900 × 1,119 (1.33 MB) | Was a bee (talk | contribs) | {{Information |Description={{en|1=Photographs of example muscles ((a and b) soleus and (c) tibialis anterior). Fibre pennation angles (PAs) were measured on the muscle surfaces (a) before they were dissected to allow a clear visualisation of the fibres deep within the muscle (b and c). The images were used to estimate PA as the angle (black arc) between the muscle fibre (blue line) and tendon/aponeurosis (dark red line). The tibialis anterior (c) is an example for a muscle with long fibres an... |
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