Assertion: phalanx's surface | /r/HasProperty | proximal articular
Facets:
Source sentences:
text: The middle phalanx is half the length of the proximal phalanx, its proximal articular surface is ridged so it can articulate with proximal phalanx and the distal end resembles that of the proximal phalanx.
text: It differs, however, in the form of its proximal articular surface, which is not a simple oval concavity, but is an oval area divided into two small, nearly circular concavities by a central ridge passing from anterior to posterior edge.