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2022-06-14

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cc-by-nc-nd (c) Casado, Aroa et al., 2022
Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/216139

3D geometric morphometric analysis of the distal radius insertion sites of the palmar radiocarpal ligaments indicates a relationship between wrist anatomy and unique locomotor behavior in hylobatids

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https://doi.org/10.1002/ajpa.24568

Abstract

Objectives: The objective of this study is to explore the anatomical differences in the insertion sites of the palmar radiocarpal ligaments between hylobatids and other hominoids that may be related to their different locomotor behaviors. Materials and methods: The morphology of the insertion sites of the palmar radiocarpal ligaments was analyzed with three-dimensional geometric morphometrics (3D GM) in the distal radial epiphysis of 44 hylobatids, 25 Pan, 31 Gorilla and 15 Pongo. Results: Relative to other hominoids, hylobatid insertion sites of the palmar radiocarpal ligaments were relatively larger and the insertion site of the short radiolunate ligament had a palmar orientation. Discussion: Larger palmar radiocarpal ligaments in hylobatids can help stabilize the wrist during the radial and ulnar displacement that occurs in ricochetal brachiation, the characteristic locomotor behavior of hylobatids, and compensate for the large traction loads on the wrist during extended-elbow vertical climbing.

Subject

Simis, Homínids, Canell, Aparell locomotor, Lligaments

Subject (English)

Apes, Hominids, Wrist, Musculoskeletal system, Ligaments

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Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)

Citation

CASADO, Aroa, et al. 3D geometric morphometric analysis of the distal radius insertion sites of the palmar radiocarpal ligaments indicates a relationship between wrist anatomy and unique locomotor behavior in hylobatids. American Journal of Physical Anthropology. 2022. Vol. 178, num. 4, pags. 647-654. ISSN 0002-9483. [consulted: 10 of June of 2026]. Available at: https://hdl.handle.net/2445/216139

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