Superior Hypogastric Plexus, Anterior View

Description

Centered over the anterior aspect of L5 and the sacral promontory, the superior hypogastric plexus appears as a flattened autonomic nerve network draped across the aortic bifurcation and proximal common iliac arteries. From this presacral position it continues inferiorly toward the pelvic brim as paired hypogastric nerves, running medial to the iliac vessels and anterior to the vertebral bodies. The abdominal aorta and inferior vena cava frame the plexus in the midline, while the lumbar vertebrae and the upper pelvis provide clear bony orientation. Surgeons care about this exact corridor because the superior hypogastric plexus sits in the operative field for anterior lumbar interbody fusion at L5 to S1, open aortoiliac procedures, and presacral or retroperitoneal pelvic exposure. Injury or traction can produce postoperative sympathetic dysfunction, most classically retrograde ejaculation in men and altered bladder neck and urethral smooth muscle control, and it can complicate pelvic pain syndromes targeted with superior hypogastric plexus block. A small structure. High consequences. Use this anterior male anatomy plate for teaching autonomic pelvic innervation in gross anatomy, neuroanatomy, and pelvic surgery modules, or to illustrate the relationship of the presacral nerve plexus to the aortic bifurcation in spine, vascular, and urologic publications. It also works well in procedural guides discussing presacral dissection planes and complication avoidance during L5 to S1 anterior approaches. Anatomical accuracy verified by SciePro's Medical Advisory Board.