triquetral bone

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tri·que·trum

(trī-kwē'trŭm) [TA]
A bone on the medial (ulnar) side of the proximal row of the carpus, articulating with the lunate, pisiform, and hamate.
Synonym(s): triquetral bone.
[L. triquetrus, three-cornered]

triquetral bone

The third carpal bone in the proximal row, enumerated from the radial side. Synonym: triquetrum
See also: bone