Pudendal canal

The pudendal canal (Alcock's canal) is a fibrous tubular space formed by the splitting of the obturator fascia, which lies on the pelvic surface of the Obturator internus, along the lateral wall of the ischioanal fossa. The pudendal canal begins near the ischial spine and extends to the lower border of the symphysis pubis. The length of the canal varies, with a mean length of approximately 1.6 cm in adult cadavers

The canal contains the pudendal nerve (responsible for the sensory and motor innervation of the perineum, including the external genitalia, the anal canal, and the perineal muscles) and internal pudendal arteries and veins, which are embedded in loose areolar tissue.