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Pudendal Artery (Internal)

arteria pudenda interna

The internal pudendal artery is the primary blood supply to the perineum, external genitalia, and external sphincters. Its course around the ischial spine (with the pudendal nerve) and through Alcock canal is clinically important for pudendal nerve blocks and for understanding the vascular anatomy of erectile function. The dorsal and deep arteries of the penis from the internal pudendal are the primary erectile arteries.

Region: Pelvis & Hip

Anatomical Data

Origin, Insertion & Supply

Origin	Anterior division of the internal iliac artery

Clinical Relevance

Clinical Notes

Pudendal artery angiographic embolisation is used to treat priapism (prolonged unwanted penile erection) from high-flow arteriovenous fistulae following perineal trauma. The internal pudendal artery pressure index (compared to brachial artery pressure) is a component of vascular erectile dysfunction assessment. Pudendal artery injury during pelvic fracture is a cause of erectile dysfunction following high-energy pelvic trauma.

Pathology

Common Injuries & Conditions

Post-Pelvic Fracture Erectile Dysfunction

Internal pudendal artery injury in high-energy pelvic fractures producing vascular erectile dysfunction managed with PDE-5 inhibitors and vascular assessment.