Circulation through the deep femoral artery and its branches is critical to patients with aortoiliac and infrainguinal arteriosclerosis. It is, accordingly, essential that all physicians who are seriously interested in treating patients with lower extremity ischemia have a good working knowledge of this crucial artery's anatomy and func tion. It is equally essential that they be aware of arteriosclerotic disease patterns that involve this important artery, how these patterns can be Clccurately defined, and, most importantly, what therapeutic options are available and when they should be used....