Blood Vessels of the Pelvis, Anterior View

Description

Arising from the distal abdominal aorta at the level of L4, the right and left common iliac arteries descend inferolaterally along the pelvic brim and bifurcate into internal and external iliac arteries anterior to the sacroiliac region. Parallel blue channels track the common iliac veins converging medially toward the inferior vena cava, with the external iliac vein positioned posteromedial to its companion artery along the psoas margin. Distally, the external iliac vessels continue toward the inguinal ligament as the femoral artery and vein, while the internal iliac artery turns medially into the lesser pelvis and rapidly divides into anterior and posterior trunks supplying pelvic viscera and the gluteal region. Smaller arterial and venous branches form a dense plexiform network around the pelvic inlet. Orientation stays strictly anterior. For pelvic and groin procedures, this anterior vascular map is the one you want. It clarifies the common iliac bifurcation and the course of the external iliac artery, a frequent target for endovascular access and a vessel at risk during pelvic lymph node dissection, acetabular fixation, and anterior approaches to the hip. Venous relationships matter just as much, since the thin-walled external and common iliac veins are prone to injury and difficult hemostasis, and the left common iliac vein is classically vulnerable to compression by the right common iliac artery (May-Thurner anatomy) with downstream iliofemoral DVT. Use this artwork in gross anatomy and pelvic surgery teaching to anchor the internal versus external iliac pathways, in radiology lectures to correlate with AP pelvic angiography or CT angiography, and in urology, colorectal, and orthopedic publishing where vessel-safe dissection planes must be communicated cleanly. Anatomical accuracy verified by SciePro's Medical Advisory Board.