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2023-03-20

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Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/225540

The morphofunctional implications of the glenoid labrum of the glenohumeral joint in hominoids

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https://doi.org/10.1002/ajpa.24729

Resum

Objectives: A morphocline of the glenoid cavity has been used to infer differences in locomotor behaviors; however, the glenoid cavity is surrounded by the glenoid labrum, a fibrocartilaginous structure that could influence the functionality of the glenoid. The objectives of this study are to explore the effects of the glenoid labrum on the area, depth, and morphology of the glenoid cavity in primates. Materials and methods: Photogrammetry was used to build 3D models of the glenoid, with and without the labrum, and three- (3D) and two-dimensional (2D) geometric morphometrics (GM) was applied. 2D areas were collected from zenithal images for glenoids with and without labrum to evaluate the availability of articular surface area. Results: In the 2D GM the morphocline is present in the dry-bone sample but not with the presence of the glenoid labrum. In the 3D GM there are differences between species mainly concerning the depth of the glenoid cavity. 2D areas reveal that the amount of articular area of the glenoid cavity increases with the presence of the labrum, particularly in humans. Discussion: The glenoid labrum changes the shape, increases the depth and the surface area of the glenoid cavity, particularly in humans. Therefore, the glenoid labrum might hold a functional role, increasing the stability of the glenohumeral joint of primates in general, and especially in humans.

Matèries

Simis, Aparell locomotor, Articulació escapulohumeral

Matèries (anglès)

Apes, Musculoskeletal system, Shoulder joint

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Articles publicats en revistes (Cirurgia i Especialitats Medicoquirúrgiques)

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RAVENTÓS IZARD, Georgina, POTAU GINÉS, Josep maria, CASADO, Aroa, PASTOR, Juan francisco, ARIAS MARTORELL, Júlia. The morphofunctional implications of the glenoid labrum of the glenohumeral joint in hominoids. _American Journal of Physical Anthropology_. 2023. Vol. 181, núm. 195-205. [consulta: 27 de gener de 2026]. ISSN: 0002-9483. [Disponible a: https://hdl.handle.net/2445/225540]

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