Deep artery of arm

The deep artery of arm (also known as arteria profunda brachii and the deep brachial artery) is a large vessel which arises from the lateral and posterior part of the brachial artery, just below the lower border of the teres major.

Deep artery of arm
Diagram of the anastomosis around the elbow-joint. (A. profunda brachii labeled at upper right.)
Sourcebrachial artery
Branchesradial collateral
medial collateral
branches to the deltoid muscle
Supplies(deltoid muscle)
triceps brachii, anconeus
Latinarteria profunda brachii
Anatomical terminology


It follows closely the radial nerve, running at first backward between the long and medial[1] heads of the triceps brachii, then along the groove for the radial nerve (the radial sulcus), where it is covered by the lateral head of the triceps brachii, to the lateral side of the arm; there it pierces the lateral intermuscular septum, and, descending between the brachioradialis and the brachialis to the front of the lateral epicondyle of the humerus, ends by anastomosing with the radial recurrent artery.

Branches and anastomoses

It gives branches to the deltoid muscle (which, however, primarily is supplied by the posterior circumflex humeral artery) and to the muscles between which it lies; it supplies an occasional nutrient artery which enters the humerus behind the deltoid tuberosity.

A branch ascends between the long and lateral heads of the triceps brachii to anastomose with the posterior humeral circumflex artery; the medial collateral artery, a branch, descends in the middle head of the triceps brachii and assists in forming the anastomosis above the olecranon of the ulna; and, lastly, a radial collateral artery runs down behind the lateral intermuscular septum to the back of the lateral epicondyle of the humerus, where it anastomoses with the interosseous recurrent and the inferior ulnar collateral arteries.

Additional images


This article incorporates text in the public domain from page 591 of the 20th edition of Gray's Anatomy (1918)

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