It ends in front of the sacroiliac joint, one on either side, and each bifurcates into the external and internal iliac arteries.

The common iliac artery are about 4 cm long in adults and more than a centimeter in diameter.

[1] The common iliac artery, and all of its branches, exist as paired structures (that is to say, there is one on the left side and one on the right).

[1] This is significant, as the bifurcation of the common iliac artery is the second point of ureteric constriction.

[1] The common iliac artery supplies the leg and the pelvic region.