Distal Articular Facet of Proximal Phalanx of Thumb
Facies articularis distalis phalangis proximalis pollicis
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The distal articular facet of the proximal phalanx of thumb is the pulley-shaped, inferior area of its head. It articulates with the articular facet of the distal phalanx of thumb, forming the interphalangeal joint of the thumb.
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Proximal Phalanx
The proximal phalanx is a tubular bone that consists of a base, a diaphysis, and a head.