Anterior Interosseous Artery, Anterior View

Description

Arising from the ulnar artery in the proximal antebrachium, the anterior interosseous artery descends on the anterior surface of the interosseous membrane, coursing in the interval between radius and ulna and remaining deep to the flexor mass. Proximally it lies distal to the brachial artery bifurcation, while more distally it tracks toward the pronator quadratus and the anterior wrist region, with the radial and ulnar arteries running more laterally and medially, respectively. An anterior projection also places the subclavian and brachial arteries in continuity with the forearm vessels, with the scapula, humerus, radius, ulna, carpals, metacarpals, and phalanges serving as fixed osseous landmarks for vessel orientation. Depth matters here. Clinical teaching often blurs the anterior interosseous artery with the anterior interosseous nerve, yet their shared corridor along the interosseous membrane is exactly why this view helps. Surgeons and interventionalists use these relationships when planning forearm flap perfusion and when interpreting post-traumatic vascular compromise after both-bone forearm fractures, where interosseous membrane disruption can endanger deep arterial flow despite palpable radial or ulnar pulses. The distal supply to pronator quadratus and adjacent deep flexors explains why compartment syndromes and deep volar lacerations can produce pain and weakness that seem out of proportion to superficial findings. Best suited for upper-limb anatomy teaching in gross anatomy, orthopaedics, or plastic surgery courses, the illustration also reads well in textbooks and journal figures discussing forearm vascular territories, interosseous membrane anatomy, and approaches to the volar forearm. In clinical education it supports case reviews on ischemia patterns, fracture fixation planning, and flap design by anchoring vessels to the radius, ulna, and carpal alignment. Anatomical accuracy verified by SciePro's Medical Advisory Board.