Arteriosclerosis, or "hardening of the arteries," commonly shows its effects first in the legs and feet. The narrowing of the arteries may progress to total closure (occlusion) of the vessel. The vessel walls become less elastic and cannot dilate to allow greater blood flow when needed (such as during exercise). Calcium deposits in the walls of the arteries contribute to the narrowing and stiffness. The effects of these deposits may be seen on ordinary X-rays.

This is a common disorder, usually affecting men over 50 years old. People are at higher risk if they have a personal or family history of coronary artery disease (heart disease) or cerebrovascular disease (stroke), diabetes, smoking, hypertension, or kidney disease involving hemodialysis.