Name of bone

Proximal phalanges of the hand


The proximal extremities of the bones of the first row present oval, concave articular surfaces, broader from side to side than from front to back. The proximal extremity of each of the bones of the second and third rows presents a double concavity separated by a median ridge.

In the four fingers, the phalanges of the first row articulate with those of the second row and with the metacarpals, the phalanges of the second row with those of the first and third rows, and the ungual phalanges with those of the second row. In the thumb, which has only two phalanges, the first phalanx articulates by its proximal extremity with the metacarpal bone and by its distal with the ungual phalanx.

Figure 1. Anatomy of the hand, with proximal phalanges in green.

Muscle and ligament attachments

Surface anatomy


Physical examination





phalanges.png (image/x-png)