Femoral artery aneurysms.

True aneurysms are dilatations of blood vessels, bounded by the tunica intima, tunica media and tunica adventitia. False aneurysms are dilatations bounded by the tunica adventitia only, and are more common than true aneurysms. The femoral artery is the second most common location for true peripheral artery aneurysms, and the most common site of false aneurysms. If left untreated, devastating complications can occur, such as infection, rupture, ischaemia and limb loss. Femoral artery aneurysms should be identified early and managed by a vascular specialist. This article outlines the evidence for the epidemiology, investigation and management of femoral artery aneurysms.