Acute ischaemia of the lower limb and sciatic artery aneurysm.

Persistent sciatic artery is a rare abnormality but complications are frequent, especially secondary to aneurysmal degeneration. Typical symptoms include sciatic pain associated with a pulsatile mass in the buttock and/or an acute ischaemia of the lower limb. The successful surgical management of one such case is described, together with a brief review of the literature.