Metacarpal bone
Metacarpal Bone
The Metacarpal Bone (pronunciation: /ˌmetəˈkärpəl/), from the Greek meta meaning "after" and carpus meaning "wrist", is one of the five long bones in the hand.
Structure
The metacarpal bones are numbered from one to five, starting on the thumb side of the hand. Each metacarpal bone consists of a body (shaft), a base (proximal end), and a head (distal end). The base articulates with the carpal bones of the wrist. The head articulates with the proximal phalanges of the fingers.
Function
The metacarpal bones are responsible for the mobility and flexibility of the hand. They allow for a wide range of movements, including flexion, extension, abduction, adduction, and circumduction.
Clinical Significance
Fractures of the metacarpal bones, known as Boxer's Fracture, are common and often result from direct trauma to the hand. Treatment typically involves immobilization with a cast or splint, but surgery may be required in severe cases.
Related Terms
See Also
External links
- Medical encyclopedia article on Metacarpal bone
- Wikipedia's article - Metacarpal bone
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