First metacarpal bone

First metacarpal bone
First metacarpal of the left hand (shown in red). Palmar view.
The first metacarpal (Left)
Details
Identifiers
Latinos metacarpale I
FMA23899
Anatomical terms of bone

The first metacarpal bone or the metacarpal bone of the thumb is the first bone proximal to the thumb. It is connected to the trapezium of the carpus at the first carpometacarpal joint and to the proximal thumb phalanx at the first metacarpophalangeal joint.

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