The Collaborative International Dictionary
Interphalangeal
Interphalangeal \In`ter*pha*lan"ge*al\, a. (Anat.) Between phalanges; as, interphalangeal articulations.
Wiktionary
interphalangeal
a. Between phalanx, as with an interphalangeal joint.
WordNet
Wikipedia
Usage examples of "interphalangeal".
Note how the capsule of the proximal interphalangeal joint is sloughed away, here and here.
He grabbed the index finger of my right hand and in one swift motion snapped it sideways, dislocating the finger at what I later learned was the proximal interphalangeal joint.