Interphalangeal (between the phalanges) can refer to: ...
• (a.) Between phalanges; as, interphalangeal articulations.
(in″tәr-fә-lan´je-әl) situated between two contiguous phalanges.
In`ter·pha·lan'ge·al adjective (Anat.) Between phalanges; as, interphalangeal articulations. 
(IP) Type: Term Pronunciation: in′tĕr-fă-lan′jē-ăl Definitions: 1. Between two phalanges; denoting the finger or toe joints.
interphalangeal Situated between two successive phalanges of a finger or toe; denoting the finger or toe joints.