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- W3133111837 abstract "Abstract Musculoskeletal computer models allow us to quantitatively relate morphological features to biomechanical performance. In non‐human apes, certain morphological features have long been linked to greater arm abduction potential and increased arm‐raising performance, compared to humans. Here, we present the first musculoskeletal model of a western lowland gorilla shoulder to test some of these long‐standing proposals. Estimates of moment arms and moments of the glenohumeral abductors (deltoid, supraspinatus and infraspinatus muscles) over arm abduction were conducted for the gorilla model and a previously published human shoulder model. Contrary to previous assumptions, we found that overall glenohumeral abduction potential is similar between Gorilla and Homo . However, gorillas differ by maintaining high abduction moment capacity with the arm raised above horizontal. This difference is linked to a disparity in soft tissue properties, indicating that scapular morphological features like a cranially oriented scapular spine and glenoid do not enhance the abductor function of the gorilla glenohumeral muscles. A functional enhancement due to differences in skeletal morphology was only demonstrated in the gorilla supraspinatus muscle. Contrary to earlier ideas linking a more obliquely oriented scapular spine to greater supraspinatus leverage, our results suggest that increased lateral projection of the greater tubercle of the humerus accounts for the greater biomechanical performance in Gorilla . This study enhances our understanding of the evolution of gorilla locomotion, as well as providing greater insight into the general interaction between anatomy, function and locomotor biomechanics." @default.
- W3133111837 created "2021-03-01" @default.
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- W3133111837 creator A5090028813 @default.
- W3133111837 date "2021-02-24" @default.
- W3133111837 modified "2023-09-25" @default.
- W3133111837 title "Exploring the functional morphology of the <i>Gorilla</i> shoulder through musculoskeletal modelling" @default.
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- W3133111837 doi "https://doi.org/10.1111/joa.13412" @default.
- W3133111837 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/8197971" @default.
- W3133111837 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/33629406" @default.
- W3133111837 hasPublicationYear "2021" @default.
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