Carpal kinematics and morphological correlates of wrist ulnar deviation mobility in nonhuman anthropoid primates.
Caley M OrrRichard AtkinsonJamie ErneweinMatthew W TocheriPublished in: American journal of biological anthropology (2023)
Increased ulnar deviation mobility is not the function of ulnar styloid withdrawal in hominoids. Instead, this feature probably reduces stress on the ulnar side wrist or is a byproduct of adaptations that increase supination. Orientation of the hamate's triquetral facet offers some potential to reconstruct ulnar deviation mobility in extinct primates.