Trapezoid bone
Trapezoid Bone
The Trapezoid Bone (Pronunciation: trap-e-zoid bone) is one of the eight carpal bones that are found in the human wrist. It is located in the distal row of the carpal bones, which are closer to the fingers. The trapezoid bone is unique in that it is the smallest bone in the distal row, and it is shaped like a trapezoid, hence its name.
Etymology
The term "trapezoid" is derived from the Greek words "trapeza" meaning "table" and "eidos" meaning "shape" or "form". This is due to the bone's four-sided, table-like shape.
Anatomy
The trapezoid bone is located between the trapezium bone and the capitate bone. It is bordered by the scaphoid bone on its proximal side. The bone has four surfaces: superior, inferior, medial, and lateral. Each surface is involved in articulation with a neighboring bone.
Function
The trapezoid bone, along with the other carpal bones, contributes to the flexibility and movement of the wrist. It plays a crucial role in the stability of the carpal bone structure and assists in the movement of the hand and fingers.
Related Terms
See Also
External links
- Medical encyclopedia article on Trapezoid bone
- Wikipedia's article - Trapezoid bone
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