Metacarpal

Metacarpal

The metacarpal bones are a group of five tubular bones in the hand located between the carpal bones of the wrist and the phalanges of the fingers. They are numbered from one to five, starting from the thumb side of the hand. The metacarpal bones are part of the appendicular skeleton and contribute to the bony architecture of the hand.

Structure

Each metacarpal bone consists of three parts: the base, the shaft, and the head. The base is the part closest to the wrist and articulates with the carpal bones. The shaft is the long, slender part of the bone. The head is the part closest to the fingers and articulates with the phalanges.

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

Injuries to the metacarpal bones, such as fractures or dislocations, are common and can result in significant disability. Treatment may involve immobilization, reduction, or surgery, depending on the severity of the injury.

See also

• Carpal bones
• Phalanges (finger bones)
• Hand

Metacarpal Resources
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