Venous ulcus crurisThe venous ulcer is always a consequence of a chronic-venous insufficiency and occurs after a phlebothrombosis or a distinct varicosis. The cause is often a small wound. Predilection sites are above the outer or inner malleoulus.Arterial ulcerIn course of a PAD there may develop an occlusion of a leg artery, which is then followed by necrosis and the ulcer. Mostly this process develops in course of a dry gangrene, also known as smoker's leg.Diabetic footVery often the ulcer appears in patients suffering from diabetes mellitus. In this disease there are several factors that contribute to the development of an ulcer.
