Triquetral bone
Triquetral Bone
The Triquetral bone (pronounced: tri-KWET-ral bone), also known as the triangular bone, is one of the eight carpal bones in the human wrist. It is located in the proximal row of the carpal bones, where it articulates with the lunate bone and pisiform bone.
Etymology
The term "Triquetral" is derived from the Latin word "Triquetrus" which means "three-cornered". This is in reference to the bone's pyramidal shape.
Structure and Function
The Triquetral bone is pyramid-shaped and has three surfaces: dorsal, palmar, and ulnar. It is the second most commonly fractured carpal bone, often resulting from a fall onto an outstretched hand. The bone plays a crucial role in the stability and flexibility of the wrist.
Related Terms
- Carpal bones: The eight small bones that make up the wrist.
- Lunate bone: A crescent-shaped carpal bone situated in the center of the wrist and articulating with the radius.
- Pisiform bone: A small knobbly, pea-shaped bone that is found in the wrist.
See Also
External links
- Medical encyclopedia article on Triquetral bone
- Wikipedia's article - Triquetral bone
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