Comparative anatomy of the ligaments and muscles of the radiocarpal joint in chimpanzees and humans

Objectives In the present study, we have analyzed anatomy of radiocarpal joint ligaments and muscles in Pan troglodytes Homo sapiens order to identify similarities differences between two species that may be related hand use function. Materials Methods Anatomical dissections were performed six adult chimpanzees 12 humans. The mass each ligament functional groups calculated relative total compared species. muscle was also Results had similar anatomical characteristics palmar greater humans, while dorsal chimpanzees. both species, inversely corresponding groups. Discussion humans importance wrist extension during manipulative tasks. need stabilize flexion, mainly arboreal locomotion.