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the bone on the medial (ulnar) side of the distal row of the carpus that features a distinct, anteriorly projecting hook; it articulates with the fourth and fifth metacarpal, triquetral, lunate, and capitate.
ha·mate bone(ham'āt bōn)
The hooked bone on the ulnar side of the distal row of the carpus (wrist). Synonym: unciform bone
See also: os