Posterior interosseous artery

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Posterior interosseous artery
Gray529.png
Arteries of the back of the forearm and hand. (Dorsal interosseus labeled at center right.)
Gray526.png
The Supinator. (Dorsal interosseus art. labeled at center right.)
Details
Latin arteria interossea posterior
Source
Ulnar artery
Supplies Extensor digiti minimi, Extensor pollicis brevis
Identifiers
Gray's p.596
Dorlands
/Elsevier
a_61/12154718
TA A12.2.09.050
FMA 22811
Anatomical terminology

The posterior interosseous artery (dorsal interosseous artery) is an artery of the forearm.

It passes backward between the oblique cord and the upper border of the interosseous membrane. It appears between the contiguous borders of the supinator and the abductor pollicis longus, and runs down the back of the forearm between the superficial and deep layers of muscles, to both of which it distributes branches.

Where it lies upon the abductor pollicis longus and the extensor pollicis brevis, it is accompanied by the dorsal interosseous nerve. At the lower part of the forearm it anastomoses with the termination of the volar interosseous artery, and with the dorsal carpal network.

It gives off, near its origin, the interosseous recurrent artery, which ascends to the interval between the lateral epicondyle and olecranon, on or through the fibers of the Supinator, but beneath the anconeus, and anastomoses with the middle collateral branch of the profunda brachii, the posterior ulnar recurrent and the inferior ulnar collateral.

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This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

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