Quantitative shape analysis of the deltoid tuberosity of modern humans (Homo sapiens) and common chimpanzees (Pan troglodytes)

Purpose To identify anatomical differences in the deltoid tuberosity of Homo sapiens and Pan troglodytes, potentially relating to the different uses of the forelimb in these two phylogenetically related species. Basic procedures We have used three-dimensional geometric morphometrics (3D GM) to analy...

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Autores: Gomez Martinez, Monica, Casado, Aroa, de Diego, Marina, Arias Martorell, Júlia, Pastor, Juan Francisco, Potau Ginés, Josep Maria
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2020
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/225281
Acceso en línea:https://hdl.handle.net/2445/225281
Access Level:acceso abierto
Palabra clave:Origen de l'home
Primats
Músculs
Origin of human beings
Primates
Muscles
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spelling Quantitative shape analysis of the deltoid tuberosity of modern humans (Homo sapiens) and common chimpanzees (Pan troglodytes)Gomez Martinez, MonicaCasado, Aroade Diego, MarinaArias Martorell, JúliaPastor, Juan FranciscoPotau Ginés, Josep MariaOrigen de l'homePrimatsMúsculsOrigin of human beingsPrimatesMusclesPurpose To identify anatomical differences in the deltoid tuberosity of Homo sapiens and Pan troglodytes, potentially relating to the different uses of the forelimb in these two phylogenetically related species. Basic procedures We have used three-dimensional geometric morphometrics (3D GM) to analyze the deltoid tuberosity of scanned humeri from 30 H. sapiens and 27 P. troglodytes. We also used the 3D scans of the humeri to calculate the surface area of the deltoid tuberosity. Finally, we dissected the deltoid muscles of three H. sapiens and three P. troglodytes to determine the relative mass and the physiological cross-sectional area (PCSA) of each part of the muscle. Main findings The 3D GM analysis of the deltoid tuberosity identified an anteroposterior enlargement of the P. troglodytes tuberosity, with a lateral displacement of the middle segment, whereas in H. sapiens, there was a distal displacement of the middle segment. Muscle architecture analysis indicated higher normalized values ​​of the PCSA of the clavicular and acromial deltoid in P. troglodytes. Principal conclusions The anatomical features observed in our P. troglodytes specimens serve to strengthen the three parts of the deltoid muscle. This fact can be related to the use of the forelimb in locomotion, both arboreal and knuckle-walking, in this species. Humans use the forelimb mainly in manipulative tasks, so they do not develop – as do chimpanzees – the anatomical features that increase the deltoid force. Our findings have shown that the different uses of the forelimb in modern humans and common chimpanzees can affect both muscle architecture and bone morphology, either jointly or separately.Elsevier2020info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttps://hdl.handle.net/2445/225281Articles publicats en revistes (Cirurgia i Especialitats Medicoquirúrgiques)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésVersió postprint del document publicat a: https://doi.org/10.1016/j.aanat.2020.151505Annals of Anatomy-Anatomischer Anzeiger, 2020, vol. 230https://doi.org/10.1016/j.aanat.2020.151505cc-by-nc-nd (c) Urban and Fischer, 2020http://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/2252812026-05-27T06:46:51Z
dc.title.none.fl_str_mv Quantitative shape analysis of the deltoid tuberosity of modern humans (Homo sapiens) and common chimpanzees (Pan troglodytes)
title Quantitative shape analysis of the deltoid tuberosity of modern humans (Homo sapiens) and common chimpanzees (Pan troglodytes)
spellingShingle Quantitative shape analysis of the deltoid tuberosity of modern humans (Homo sapiens) and common chimpanzees (Pan troglodytes)
Gomez Martinez, Monica
Origen de l'home
Primats
Músculs
Origin of human beings
Primates
Muscles
title_short Quantitative shape analysis of the deltoid tuberosity of modern humans (Homo sapiens) and common chimpanzees (Pan troglodytes)
title_full Quantitative shape analysis of the deltoid tuberosity of modern humans (Homo sapiens) and common chimpanzees (Pan troglodytes)
title_fullStr Quantitative shape analysis of the deltoid tuberosity of modern humans (Homo sapiens) and common chimpanzees (Pan troglodytes)
title_full_unstemmed Quantitative shape analysis of the deltoid tuberosity of modern humans (Homo sapiens) and common chimpanzees (Pan troglodytes)
title_sort Quantitative shape analysis of the deltoid tuberosity of modern humans (Homo sapiens) and common chimpanzees (Pan troglodytes)
dc.creator.none.fl_str_mv Gomez Martinez, Monica
Casado, Aroa
de Diego, Marina
Arias Martorell, Júlia
Pastor, Juan Francisco
Potau Ginés, Josep Maria
author Gomez Martinez, Monica
author_facet Gomez Martinez, Monica
Casado, Aroa
de Diego, Marina
Arias Martorell, Júlia
Pastor, Juan Francisco
Potau Ginés, Josep Maria
author_role author
author2 Casado, Aroa
de Diego, Marina
Arias Martorell, Júlia
Pastor, Juan Francisco
Potau Ginés, Josep Maria
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Origen de l'home
Primats
Músculs
Origin of human beings
Primates
Muscles
topic Origen de l'home
Primats
Músculs
Origin of human beings
Primates
Muscles
description Purpose To identify anatomical differences in the deltoid tuberosity of Homo sapiens and Pan troglodytes, potentially relating to the different uses of the forelimb in these two phylogenetically related species. Basic procedures We have used three-dimensional geometric morphometrics (3D GM) to analyze the deltoid tuberosity of scanned humeri from 30 H. sapiens and 27 P. troglodytes. We also used the 3D scans of the humeri to calculate the surface area of the deltoid tuberosity. Finally, we dissected the deltoid muscles of three H. sapiens and three P. troglodytes to determine the relative mass and the physiological cross-sectional area (PCSA) of each part of the muscle. Main findings The 3D GM analysis of the deltoid tuberosity identified an anteroposterior enlargement of the P. troglodytes tuberosity, with a lateral displacement of the middle segment, whereas in H. sapiens, there was a distal displacement of the middle segment. Muscle architecture analysis indicated higher normalized values ​​of the PCSA of the clavicular and acromial deltoid in P. troglodytes. Principal conclusions The anatomical features observed in our P. troglodytes specimens serve to strengthen the three parts of the deltoid muscle. This fact can be related to the use of the forelimb in locomotion, both arboreal and knuckle-walking, in this species. Humans use the forelimb mainly in manipulative tasks, so they do not develop – as do chimpanzees – the anatomical features that increase the deltoid force. Our findings have shown that the different uses of the forelimb in modern humans and common chimpanzees can affect both muscle architecture and bone morphology, either jointly or separately.
publishDate 2020
dc.date.none.fl_str_mv 2020
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/225281
url https://hdl.handle.net/2445/225281
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Versió postprint del document publicat a: https://doi.org/10.1016/j.aanat.2020.151505
Annals of Anatomy-Anatomischer Anzeiger, 2020, vol. 230
https://doi.org/10.1016/j.aanat.2020.151505
dc.rights.none.fl_str_mv cc-by-nc-nd (c) Urban and Fischer, 2020
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by-nc-nd (c) Urban and Fischer, 2020
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv Articles publicats en revistes (Cirurgia i Especialitats Medicoquirúrgiques)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,81155

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