Posterior Perspective of the Brachial Artery

Description

Posterior anatomy of the male upper limb is rendered from shoulder to hand, with the brachial artery (red) descending in the arm as the direct continuation of the axillary artery distal to the teres major. Along the humeral shaft it courses deep to the biceps brachii and adjacent to the humerus, while the profunda brachii artery typically tracks posterolaterally with the radial nerve through the radial (spiral) groove toward the lateral intermuscular septum. Distally, the brachial trunk approaches the cubital fossa to divide into the radial and ulnar arteries, while paired venae comitantes and the larger superficial channels (basilic medially, cephalic laterally) are shown in blue, running in parallel but in a more superficial plane. Clean vessel hierarchy. This posterior perspective is the one you want when teaching why the radial nerve and profunda brachii artery are the structures at risk in midshaft humeral fractures and when tracking the source of posterior arm hematoma. It also supports procedural anatomy: understanding where the brachial artery lies relative to the medial intermuscular septum and distal arm musculature helps explain why brachial artery injury can accompany supracondylar fractures and why distal perfusion must be checked even when the external wound is posterior. Surface veins and deep companion veins in the same field make it easier to contrast venipuncture targets with the deep arterial course. Use this artwork in upper limb gross anatomy and neurovascular teaching sessions, in orthopedics and emergency medicine materials covering humeral shaft injury patterns, and in surgical texts illustrating arterial exposure and collateral flow around the elbow. Anatomical accuracy verified by SciePro's Medical Advisory Board.