Technical note

Forearm pronation efficiency analysis in skeletal remains

Bibliographic Data

ID8312010
AuthorsIgnasi Galtés (0000-0002-5758-2668, Universitat Autonòma de Barcelona), Xavier Jordana (0000-0001-8990-4388), A Malgosa (0000-0003-1723-3671, Universitat Autonòma de Barcelona), Joan Manyosa (Universitat Autonòma de Barcelona, corresponding author)
Year2009
Volume140
Issue3
Pages589-594
Publication date2009-11-01
Peer ReviewedYes
Open AccessYes
TypeARTICLE
VenueAmerican Journal of Physical Anthropology (JOURNAL)
Journal identifiersISSN: 0002-9483 • E-ISSN: 1096-8644
PublisherWiley (PUBLISHER • GB)
DOI10.1002/ajpa.21144
PMID19672849
OpenAlexW2121950133
LanguageEN
Citations received5
References cited8

This work presents an original methodology for analyzing forearm‐pronation efficiency from skeletal remains and its variation with regard to changes in the elbow position. The methodology is based on a biomechanical model that defines rotational efficiency as a mathematical function expressing a geometrical relationship between the origin and insertion of the pronator teres. The methodology uses humeral distal epiphysis photography, from which the geometrical parameters for the efficiency calculus can be obtained. Rotational efficiency is analyzed in a human specimen and in a living nonhuman hominoid ( Symphalangus syndactylus ) for a full elbow extension (180°) and an intermediate elbow position (90°). In both specimens, the results show that this rotational‐efficiency parameter varies throughout the entire rotational range and show a dependency on the elbow joint position. The rotational efficiency of the siamang's pronator teres is less affected by flexion of the forearm than that of the human. The fact that forearm‐pronation efficiency can be inferred, even quantified, allows us to interpret more precisely the functional and evolutionary significance of upper‐limb skeletal design in extant and fossil primate taxa. Am J Phys Anthropol 2009. © 2009 Wiley‐Liss, Inc

Biology · Elbow · Elbow flexion · Evolutionary biology · Extant taxon · Forearm · Position (finance) · Upper limb · Anatomy · Evolution and Paleontology Studies · Hemispheric Asymmetry in Neuroscience · Mathematics · Medicine · Orthodontics · Primate Behavior and Ecology

Tools

Open DOISci-Hub