Triangular bone

Triangular Bone

The Triangular Bone or Triquetral Bone is one of the eight carpal bones of the hand. It is located in the ulnar side of the hand and articulates with four other bones.

Structure

The triangular bone is pyramid-shaped and has three surfaces. It is located in the proximal row of carpal bones, where it is the farthest bone from the thumb. The bone is bordered by the pisiform bone on the palmar side, the lunate bone on the radial side, and the hamate bone and fifth metacarpal bone on the ulnar side.

Function

The triangular bone contributes to the flexibility and movement of the wrist. It forms part of the articulation of the wrist, which allows for the hand's various movements.

Clinical Significance

Injuries to the triangular bone, such as fractures or dislocations, can occur due to falls, sports injuries, or direct trauma to the hand. These injuries can cause pain, swelling, and limited movement in the wrist and hand. Treatment may involve immobilization, physical therapy, or surgery.

See Also

• Carpal bones
• Hand
• Wrist

External Links

• Triangular Bone at Human Anatomy Online
• Triangular Bone at Gray's Anatomy