First Metacarpal

First Metacarpal The structure indicated is the first metacarpal of the hand. There are three groups of bones in the hand: Carpal bones (8 in total) Metacarpal bones Phalanges The carpal bones are separated into two rows: Proximal row Distal row There are 5 metacarpal bones numbered 1 to 5 and are located between the carpal bones and the phalanges. The first metacarpal bone is associated with the thumb, the 5th metacarpal bone is associated with the little finger. The joints between the carpals and the metacarpals are known as carpometacarpal joints. The joints between the metacarpals and the proximal …

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