Latarjet's Muscular Alterations Increase Glenohumeral Joint Stability: A Theoretical Study
Description
The surgical Latarjet procedure aims to stabilise the glenohumeral joint following anterior dislocations. Despite restoring joint stability, the procedure introduces alterations of muscle paths which likely modify the shoulder dynamics. Currently, these altered muscular functions and their implications are unclear. Hence, this work aims to predict changes in muscle lever arms, muscle and joint forces following a Latarjet procedure by using a computational approach.Planar shoulder movements of ten participants were experimentally assessed. A validated upper-limb musculoskeletal model was utilised in two configurations, i.e., a baseline model, simulating normal joint, and a Latarjet model simulating its related muscular alterations. Muscle lever arms and differences in muscle and joint forces between models were derived from the experimental marker data and static optimisation technique.Lever arms of most altered muscles, hence their role, were substantially changed after Latarjet. Altered muscle forces varied by up to 15% of the body weight. Total glenohumeral joint force increased by up to 14% of the body weight after Latarjet, mostly due to increase in compression force.Our simulation indicated that the Latarjet muscular alterations lead to changes in the muscular recruitment and contribute to the stability of the glenohumeral joint by increasing compression force during planar motions.
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ID Code: | 249051 | ||||||||
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Item Type: | Working Paper (Preprint) | ||||||||
Refereed: | No | ||||||||
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Measurements or Duration: | 21 pages | ||||||||
DOI: | 10.2139/ssrn.4353392 | ||||||||
Pure ID: | 171451490 | ||||||||
Divisions: | Current > QUT Faculties and Divisions > Faculty of Engineering Current > Schools > School of Mechanical, Medical & Process Engineering Current > QUT Faculties and Divisions > Faculty of Health Current > Schools > School of Exercise & Nutrition Sciences |
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Funding Information: | All the authors would like to gratefully acknowledge funding received through the Australian Research Council (ARC) Industrial Transformation Training Centre for Joint Biomechanics (IC190100020). Saulo Martelli would also like to acknowledge the support received through the following funding schemes of the Australian Research Council: DP180103146; FT180100338. | ||||||||
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Copyright Owner: | Consult author(s) regarding copyright matters | ||||||||
Copyright Statement: | This work is covered by copyright. Unless the document is being made available under a Creative Commons Licence, you must assume that re-use is limited to personal use and that permission from the copyright owner must be obtained for all other uses. If the document is available under a Creative Commons License (or other specified license) then refer to the Licence for details of permitted re-use. It is a condition of access that users recognise and abide by the legal requirements associated with these rights. If you believe that this work infringes copyright please provide details by email to qut.copyright@qut.edu.au | ||||||||
Deposited On: | 18 Jun 2024 00:42 | ||||||||
Last Modified: | 01 Jul 2024 14:45 |
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