The triquetrum is one of eight carpal bones that forms part of the wrist joint. It is a pyramidal shaped bone that can be found in the medial side of the wrist. The name triquetrum is derived from the Latin word triquetrus which means "three-cornered". Sometimes it is also called triquetral bone, triangular bone or cuneiform bone.
The triquetrum has a triangular and pyramidal shape. It is situated in the proximal row of carpal bones on the medial side of the wrist. It has multiple articulation surfaces.
The triquetrum is one of the carpal bones that form the carpal arch, wherein the carpal tunnel is situated. It also serves as an attachment for multiple ligaments such as the ulnar collateral ligament.
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