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Comparative anatomy of the subclavius muscle and clavicle: a histological study using human, swine and mouse fetuses

dc.contributor.authorVerdugo López, Samuel
dc.contributor.authorKitamura, Kei
dc.contributor.authorMurakami, Gen
dc.contributor.authorRodríguez-Vázquez, Jose Francisco
dc.contributor.authorYamamoto, Hitoshi
dc.date.accessioned2025-09-25T10:13:21Z
dc.date.available2025-09-25T10:13:21Z
dc.date.issued2025-01-02
dc.descriptionVersión postprint del artículo
dc.description.abstractBackground: Some mammals including the swine carry a fibrous vestigial clavicle, but a subclavius muscle (SBM) extends between the first rib and the supraspinatus muscle surface fascia. We aimed to examine development of the SBM and clavicle for finding a specific factor to provide the curious morphology. Materials and methods: Histological sections of early- and midterm fetuses of the swine, human and mouse were observed and compared at the almost same morphological stage. Results: In all three species, the initial SBM was seen extending between the cartilaginous first rib and a mesenchymal clavicle. At the early stage, the human and mouse fetuses carried the mesenchymal manubrium sterni above the heart bulbus as well as the acromion above the humeral head. However, in the swine fetus, the manubrium remained far caudal to the first rib, while the acromion was in the laterocaudal side of the glenohumeral joint. In place of the acromion, the swine supraspinatus muscle was large and covered the humeral head. At midterm, the human and mouse SBM attached to the membranous bone of the clavicle. Endochondral ossification occurred at the lateral and medial ends of the human clavicle, while it was seen in the medial half of the mouse clavicle anlage with a homogenous eosinophilic matrix. Conclusions: The swine clavicle seemed to lose the endochondral parts due to the caudally-shifted manubrium sterni and acromion. The medial or clavicular attachment of the swine SBM might migrate to a nearby fascia of the supraspinatus muscle in the later development.
dc.description.departmentDepto. de Anatomía y Embriología
dc.description.departmentUnidad Docente de Anatomía y Embriología
dc.description.facultyFac. de Medicina
dc.description.facultyFac. de Óptica y Optometría
dc.description.refereedTRUE
dc.description.statusinpress
dc.identifier.citationVerdugo-López S, Kitamura K, Murakami G, Rodríguez-Vázquez JF, Yamamoto H. Comparative anatomy of the subclavius muscle and clavicle: a histological study using human, swine and mouse fetuses. Folia Morphologica. 2025 [Epub ahead of print Jan 2, 2025]. doi:10.5603/fm.102531.
dc.identifier.doi0.5603/fm.102531
dc.identifier.essn1644-3284
dc.identifier.issn0015-5659
dc.identifier.officialurlhttps://doi.org/10.5603/fm.102531
dc.identifier.pmid39764658
dc.identifier.relatedurlhttps://journals.viamedica.pl/folia_morphologica/article/view/102531
dc.identifier.urihttps://hdl.handle.net/20.500.14352/124313
dc.journal.titleFolia Morphologica
dc.language.isoeng
dc.publisherPolish Anatomical Society
dc.rights.accessRightsopen access
dc.subject.cdu611.019
dc.subject.cdu599
dc.subject.keywordSubclavius muscle
dc.subject.keywordMouse
dc.subject.keywordHuman
dc.subject.keywordSwine
dc.subject.keywordFetal developments
dc.subject.keywordManubrium sterni
dc.subject.keywordClavicle
dc.subject.ucmAnatomía
dc.subject.ucmMamíferos
dc.subject.unesco2410.02 Anatomía Humana
dc.subject.unesco2401.01 Anatomía Animal
dc.subject.unesco2401.18 Mamíferos
dc.titleComparative anatomy of the subclavius muscle and clavicle: a histological study using human, swine and mouse fetuses
dc.typejournal article
dc.type.hasVersionSMUR
dspace.entity.typePublication
relation.isAuthorOfPublication65d6f78b-cba2-4243-adfc-6cead9de1e10
relation.isAuthorOfPublication.latestForDiscovery65d6f78b-cba2-4243-adfc-6cead9de1e10

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