Triquetrum
Triquetrum
The Triquetrum (pronounced: tri-KWET-rum), also known as the triangular bone, is one of the eight small bones in the wrist of the human body. It is a part of the carpal bones, which are arranged in two rows. The triquetrum is located in the upper row, on the side of the little finger.
Etymology
The term "Triquetrum" comes from the Latin word "Triquetrus", which means "three-cornered". This is due to the bone's pyramidal shape.
Anatomy
The Triquetrum is pyramid-shaped and has three surfaces: the superior, inferior, and dorsal. It articulates with the lunate bone on its radial side, the pisiform bone on its volar side, and the hamate bone on its ulnar side.
Function
The Triquetrum, along with the other carpal bones, contributes to the flexibility and movement of the wrist. It plays a crucial role in the ulnar deviation of the wrist and in complex movements like rotation and flexion.
Related Terms
See Also
External links
- Medical encyclopedia article on Triquetrum
- Wikipedia's article - Triquetrum
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