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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first metacarpal

Proximal Phalanx

Proximal Phalanx The structure indicated is the proximal phalanx of the 5th finger. The hand consists of three groups of bones: Carpals Metacarpals Phalanges The phalanges (phalanx = singular), form the fingers/digits of the hands. The thumb consists of two phalanges: proximal phalanx and distal phalanx. The rest of the fingers consist of: Proximal phalanx Middle phalanx Distal phalanx The phalanges themselves have the following features: Base (proximally) Head (distally) Shaft/body (in between the base and the head) Learn more about the anatomy of the bones of the hand in this tutorial.

proximal phalanx of 5th finger