Recurrent Interosseous Artery, Posterior View

Description

Arising from the posterior interosseous artery, the recurrent interosseous artery curves proximally on the posterior forearm toward the olecranon, running deep to the extensor musculature and approaching the anastomotic network around the elbow. Proximally, the brachial artery transitions into the radial and ulnar arteries near the cubital fossa, while more distally the arterial tree tapers into forearm branches and hand arterioles. A paired venous channel tracks alongside the arteries on the posterior aspect, contrasting with the deeper arterial course. Orientation is posterior, with the olecranon and proximal ulna forming the superior landmark. Posterior depiction of the recurrent interosseous artery matters because it is a consistent contributor to the periarticular arterial ring at the elbow, joining branches such as the interosseous recurrent, ulnar recurrent, and collateral branches from the profunda brachii to maintain perfusion during flexion or when proximal flow is compromised. Surgeons working around the posterolateral elbow, including approaches for olecranon fracture fixation, elbow arthroplasty exposure, or debridement for septic olecranon bursitis, often encounter this territory where small-caliber vessels can bleed briskly and obscure the plane. It also clarifies why distal perfusion can persist despite brachial artery injury, a teaching point in trauma and vascular surgery. Ideal for upper limb anatomy teaching in gross anatomy and neurovascular modules, this plate supports textbook figures on elbow anastomoses, operative anatomy handouts, and patient-facing diagrams explaining arterial bypass or post-traumatic collateral flow. It also fits radiology and ultrasound teaching when correlating Doppler signals around the olecranon and proximal interosseous region. Anatomical accuracy verified by SciePro's Medical Advisory Board.