Inside the hand.

Skeletal orientation · review pending

Three groups, one hand

Eight carpals form the wrist group, five metacarpals form the palm, and fourteen phalanges form the thumb and fingers. The proximal carpal row contains scaphoid, lunate, triquetrum and pisiform; the distal row contains trapezium, trapezoid, capitate and hamate.

The thumb has a proximal and a distal phalanx. Each remaining finger also has a middle phalanx. These names describe position along a digit; they are not different layers.

Reading source: OpenStax · Bones of the upper limb. Factual reference checked 19 October 2026; no text or illustrations reproduced. Anatomical review is still pending.

See the hand in context

This close-up loads only the 27 principal hand bones. The whole upper-limb model adds the shoulder, arm and forearm skeleton and the selected muscles assembled so far. Neither study includes accessory bones, a complete muscular system or moving joints.

Click to select; double-click or double-tap to open an individual bone. Use the name list if a small carpal is hard to select. The new bone pages are identification studies; detailed individual anatomy articles will be added separately.