Triquetral bone

The triquetral bone (also called triquetral, os triquetrum, cuneiform bone, pyramidal bone, cubital bone, os pyramidale, os triangulare, three-cornered bone, and triangular bone) is a type of carpal bone.

Location and articulation

The triquetral 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.

Shape

The triquetral bone is pyramid-shaped.

Etymology

Formed from Latin "triquetrus" which means "three-cornered".

See also

• Bone terminology
• Terms for anatomical location