The common iliac arteries divide at the sacroiliac joints and become the external and internal iliac arteries. The external iliac arteries mainly serve the lower limb. The internal iliac arteries distribute blood to the pelvic walls and viscera (i.e., rectum, bladder, prostate, ductus deferens, uterus, uterine tubes, and ovaries). Additionally, these arteries distribute blood to the gluteal region, the perineum, and the medial compartment of the thigh.