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A bone on the medial side of the carpus, articulating with the fourth and fifth metacarpal, triquetrum, lunate, and capitate bones.
Etymology: L, hamatus, hooked
a carpal (wrist) bone that rests on the fourth and fifth metacarpal bones and projects a hooklike process, the hamulus, from its palmar surface. Its dorsal surface is rough for ligamentous attachment. The hamate bone articulates with the lunate proximally, the fourth and fifth metacarpal distally, the triangular medially, and the capitate laterally. Also called os hamatum, unciform bone.
ha·mate bone(ham'āt bōn)
The most medial wrist (carpal) bone in the distal row. It has a hooked process on its palmar side. The hamate articulates with the 4th and 5th metacarpals. Synonym: hamatum; os hamatum; unciform bone
See also: bone