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Metacarpophalangeal joint loads during bonobo locomotion: model predictions versus proxies.
Synek, Alexander; Lu, Szu-Ching; Nauwelaerts, Sandra; Pahr, Dieter H; Kivell, Tracy L.
Afiliación
  • Synek A; Institute of Lightweight Design and Structural Biomechanics, TU Wien, Vienna, Austria.
  • Lu SC; Animal Postcranial Evolution Laboratory, Skeletal Biology Research Centre, School of Anthropology and Conservation, University of Kent, Canterbury, UK.
  • Nauwelaerts S; Laboratory for Innovation in Autism, School of Education, University of Strathclyde, Glasgow, UK.
  • Pahr DH; Department of Biology, University of Antwerp, Wilrijk, Belgium.
  • Kivell TL; Center for Research and Conservation KMDA, Astridplein, Antwerpen, Belgium.
J R Soc Interface ; 17(164): 20200032, 2020 03.
Article en En | MEDLINE | ID: mdl-32126191
The analysis of internal trabecular and cortical bone has been an informative tool for drawing inferences about behaviour in extant and fossil primate taxa. Within the hand, metacarpal bone architecture has been shown to correlate well with primate locomotion; however, the extent of morphological differences across taxa is unexpectedly small given the variability in hand use. One explanation for this observation is that the activity-related differences in the joint loads acting on the bone are simply smaller than estimated based on commonly used proxies (i.e. external loading and joint posture), which neglect the influence of muscle forces. In this study, experimental data and a musculoskeletal finger model are used to test this hypothesis by comparing differences between climbing and knuckle-walking locomotion of captive bonobos (Pan paniscus) based on (i) joint load magnitude and direction predicted by the models and (ii) proxy estimations. The results showed that the activity-related differences in predicted joint loads are indeed much smaller than the proxies would suggest, with joint load magnitudes being almost identical between the two locomotor modes. Differences in joint load directions were smaller but still evident, indicating that joint load directions might be a more robust indicator of variation in hand use than joint load magnitudes. Overall, this study emphasizes the importance of including muscular forces in the interpretation of skeletal remains and promotes the use of musculoskeletal models for correct functional interpretations.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Pan paniscus / Huesos del Metacarpo Tipo de estudio: Prognostic_studies / Risk_factors_studies Límite: Animals Idioma: En Revista: J R Soc Interface Año: 2020 Tipo del documento: Article País de afiliación: Austria Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Pan paniscus / Huesos del Metacarpo Tipo de estudio: Prognostic_studies / Risk_factors_studies Límite: Animals Idioma: En Revista: J R Soc Interface Año: 2020 Tipo del documento: Article País de afiliación: Austria Pais de publicación: Reino Unido