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Stress distribution in the bonobo (Pan paniscus) trapeziometacarpal joint during grasping
The primate thumb plays a central role in grasping and the basal trapeziometacarpal (TMC) joint is critical to its function. The TMC joint morphology varies across primates, yet little is known about form-function interaction within in the TMC joint. The purpose of this study was to investigate how...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
PeerJ Inc.
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8489413/ https://www.ncbi.nlm.nih.gov/pubmed/34703659 http://dx.doi.org/10.7717/peerj.12068 |
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author | van Leeuwen, Timo van Lenthe, G. Harry Vereecke, Evie E. Schneider, Marco T. |
author_facet | van Leeuwen, Timo van Lenthe, G. Harry Vereecke, Evie E. Schneider, Marco T. |
author_sort | van Leeuwen, Timo |
collection | PubMed |
description | The primate thumb plays a central role in grasping and the basal trapeziometacarpal (TMC) joint is critical to its function. The TMC joint morphology varies across primates, yet little is known about form-function interaction within in the TMC joint. The purpose of this study was to investigate how stress distributions within the joint differ between five grasping types commonly employed by bonobos (Pan paniscus). Five cadaveric bonobo forearms were CT scanned in five standardized positions of the hand as a basis for the generation of parametric finite element models to compare grasps. We have developed a finite element analysis (FEA) approach to investigate stress distribution patterns in the TMC joint associated with each grasp type. We hypothesized that the simulated stress distributions for each position would correspond with the patterns expected from a saddle-shaped joint. However, we also expected differences in stress patterns arising from instraspecific variations in morphology. The models showed a high agreement between simulated and expected stress patterns for each of the five grasps (86% of successful simulations), while partially (52%) and fully (14%) diverging patterns were also encountered. We identified individual variations of key morphological features in the bonobo TMC joint that account for the diverging stress patterns and emphasized the effect of interindividual morphological variation on joint functioning. This study gives unprecedented insight in the form-function interactions in the TMC joint of the bonobo and provides an innovative FEA approach to modelling intra-articular stress distributions, a valuable tool for the study of the primate thumb biomechanics. |
format | Online Article Text |
id | pubmed-8489413 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | PeerJ Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-84894132021-10-25 Stress distribution in the bonobo (Pan paniscus) trapeziometacarpal joint during grasping van Leeuwen, Timo van Lenthe, G. Harry Vereecke, Evie E. Schneider, Marco T. PeerJ Anthropology The primate thumb plays a central role in grasping and the basal trapeziometacarpal (TMC) joint is critical to its function. The TMC joint morphology varies across primates, yet little is known about form-function interaction within in the TMC joint. The purpose of this study was to investigate how stress distributions within the joint differ between five grasping types commonly employed by bonobos (Pan paniscus). Five cadaveric bonobo forearms were CT scanned in five standardized positions of the hand as a basis for the generation of parametric finite element models to compare grasps. We have developed a finite element analysis (FEA) approach to investigate stress distribution patterns in the TMC joint associated with each grasp type. We hypothesized that the simulated stress distributions for each position would correspond with the patterns expected from a saddle-shaped joint. However, we also expected differences in stress patterns arising from instraspecific variations in morphology. The models showed a high agreement between simulated and expected stress patterns for each of the five grasps (86% of successful simulations), while partially (52%) and fully (14%) diverging patterns were also encountered. We identified individual variations of key morphological features in the bonobo TMC joint that account for the diverging stress patterns and emphasized the effect of interindividual morphological variation on joint functioning. This study gives unprecedented insight in the form-function interactions in the TMC joint of the bonobo and provides an innovative FEA approach to modelling intra-articular stress distributions, a valuable tool for the study of the primate thumb biomechanics. PeerJ Inc. 2021-10-01 /pmc/articles/PMC8489413/ /pubmed/34703659 http://dx.doi.org/10.7717/peerj.12068 Text en ©2021 van Leeuwen et al. https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited. |
spellingShingle | Anthropology van Leeuwen, Timo van Lenthe, G. Harry Vereecke, Evie E. Schneider, Marco T. Stress distribution in the bonobo (Pan paniscus) trapeziometacarpal joint during grasping |
title | Stress distribution in the bonobo (Pan paniscus) trapeziometacarpal joint during grasping |
title_full | Stress distribution in the bonobo (Pan paniscus) trapeziometacarpal joint during grasping |
title_fullStr | Stress distribution in the bonobo (Pan paniscus) trapeziometacarpal joint during grasping |
title_full_unstemmed | Stress distribution in the bonobo (Pan paniscus) trapeziometacarpal joint during grasping |
title_short | Stress distribution in the bonobo (Pan paniscus) trapeziometacarpal joint during grasping |
title_sort | stress distribution in the bonobo (pan paniscus) trapeziometacarpal joint during grasping |
topic | Anthropology |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8489413/ https://www.ncbi.nlm.nih.gov/pubmed/34703659 http://dx.doi.org/10.7717/peerj.12068 |
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