What is "triquetral bone"

n. (context anatomy English) One of the carpal bones of the wrist.

n. a wrist bone that articulates with the pisiform and hamate and lunate bones [syn: triquetral, os triquetrum, cuneiform bone, pyramidal bone]

The triquetral bone ( or ; also called triquetrum, pyramidal, three-cornered or triangular bone, and formerly cuneiform bone) is located in the wrist on the medial side of the proximal row of the carpus between the lunate and pisiform bones. It is on the ulnar side of the hand, but does not articulate with the ulna. It connects with the pisiform, hamate, and lunate bones. It is the 3rd most commonly fractured carpal bone.