The posterior interosseous artery (dorsal interosseous artery) is an artery of the forearm. It is a branch of the common interosseous artery, which is a branch of the ulnar artery.
| Posterior interosseous artery | |
|---|---|
 Arteries of the back of the forearm and hand. (Dorsal interosseus labeled at center right.) | |
 The Supinator. (Dorsal interosseus art. labeled at center right.) | |
| Details | |
| Source | common interosseous artery |
| Branches | interosseous recurrent artery |
| Supplies | Extensor digiti minimi, Extensor pollicis longus, Extensor pollicis brevis, extensor digitorum, extensor indicis, abductor pollicis longus |
| Identifiers | |
| Latin | arteria interossea posterior |
| TA98 | A12.2.09.050 |
| TA2 | 4665 |
| FMA | 22811 |
| Anatomical terminology | |
Structure edit
The posterior interosseous artery passes backward between the oblique cord and the upper border of the interosseous membrane. It appears between the contiguous borders of supinator muscle and the abductor pollicis longus muscle, 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 on abductor pollicis longus muscle and the extensor pollicis brevis muscle, 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.
Branches edit
Near its origin, it gives off the interosseous recurrent artery.[1] This ascends to the interval between the lateral epicondyle and olecranon, on or through the fibers of supinator muscle, but beneath the anconeus muscle, and anastomoses with the middle collateral branch of the deep artery of arm, the posterior ulnar recurrent artery and the inferior ulnar collateral artery.
The posterior interosseous artery gives off many muscular arteries.[1]
Additional images edit
-
Left elbow-joint, showing anterior and ulnar collateral ligaments. -
Cross-section through the middle of the forearm. -
Posterior interosseous artery -
Posterior interosseous artery -
Posterior interosseous artery and nerve
See also edit
References edit
This article incorporates text in the public domain from page 596 of the 20th edition of Gray's Anatomy (1918)
- ^ a b Lu, Lai Jin; Gong, Xu; Liu, Zhi Gang; Zhang, Zhi Xin (2004-10-01). "Antebrachial reverse island flap with pedicle of posterior interosseous artery: a report of 90 cases". British Journal of Plastic Surgery. 57 (7). Elsevier: 645–652. doi:10.1016/j.bjps.2004.05.027. ISSN 0007-1226. PMID 15380698 – via ScienceDirect.
External links edit
- EatonHand vas-026
- lesson4artofforearm at The Anatomy Lesson by Wesley Norman (Georgetown University)
- Atlas image: hand_blood3 at the University of Michigan Health System - "Dorsum of the hand, deep dissection, posterior view"
