Hand Digit 1 Proximal Phalanx

**Semantic type:** Body Part, Organ, or Organ Component

**Definition:** The long bone in the first finger, as counted from the thenar side of the hand; it is located between, and articulates with, the first metacarpal and the distal phalanx.

**Synonyms:** - PROXIMAL PHALANX 1 OF THE HAND