|Fifth metacarpal bone|
Fifth metacarpal of the left hand (shown in red). Palmar view.
The fifth metacarpal. (Left.)
|Latin||os metacarpale V|
|Anatomical terms of bone|
The fifth metacarpal bone (metacarpal bone of the little finger or pinky finger) is the most medial and second shortest of the metacarpal bones.
On its ulnar side is a prominent tubercle for the insertion of the tendon of the extensor carpi ulnaris muscle.
The dorsal surface of the body is divided by an oblique ridge, which extends from near the ulnar side of the base to the radial side of the head.
A fracture of the fourth and/or fifth metacarpal bones transverse neck secondary due to axial loading is known as a boxer's fracture.[contradictory] The fifth metacarpal bone is the most common bone to be injured when throwing a punch.
The ossification process begins in the shaft during prenatal life, and in the head between 11th and 37th months.
Fracture of the fifth metacarpal (boxer's fracture).
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