Tags: Anatomical Structure, Bone.
The trapezoid bone (lesser multangular bone) is a carpal bone in tetrapods including humans. It is the smallest bone in the distal row. It may be known by its wedge-shaped form the broad end of the wedge constituting the dorsal the narrow end the palmar surface; and by its having four articular facets touching each other and separated by sharp edges. It is homologous with the second distal carpal of reptiles and amphibians.
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