Third metacarpal styloid process: Difference between revisions

Revision as of 18:37, 17 December 2013

Revision as of 18:45, 17 December 2013

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Third [[metacarpal]] [[styloid]] process enables the hand bone to lock into the wrist bones, allowing for greater amounts of pressure to be applied to the [[wrist]] and [[hand]] from a grasping thumb and fingers. It allows [[humans]] the dexterity and strength to [https://en.wikipedia.org/wiki/Human_evolution#Use_of_tools| make and use complex tools]. This unique anatomical feature separates humans from apes and other nonhuman primates, and is not seen in human fossils older than 1.8 million years.<ref>{{cite journal|doi=10.1073/pnas.1316014110|title=Early Pleistocene third metacarpal from Kenya and the evolution of modern human-like hand morphology}}</ref>

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