Dorsal carpal branch of the radial artery

The dorsal carpal branch of the radial artery (posterior radial carpal artery) is a small vessel which arises beneath the extensor tendons of the thumb; crossing the carpus transversely toward the medial border of the hand, it anastomoses with the dorsal carpal branch of the ulnar artery.

Dorsal carpal branch of the radial artery
Arteries of the back of the forearm and hand.
Details
Source	Radial artery
Branches	Dorsal carpal arch, dorsalis pollicis, princeps pollicis artery
Identifiers
Latin	ramus carpalis dorsalis arteriae radialis
TA98	A12.2.09.032
TA2	4646
FMA	22755
Anatomical terminology [edit on Wikidata]

The dorsal branch of the radial artery also branches into the dorsalis pollicis artery; more distally it branches into the princeps pollicis artery, and anastomoses with perforating branches of the deep palmar arch^[1]