[Physiopathology of leg ulcers]

Leg ulcers occur more commonly in the elderly and represent in our ageing western countries a real public health problem. Different mechanisms can induce these cutaneous ulcerations. An underlying vascular insufficiency, venous, arterial or mixed can be demonstrated in most cases. The management of leg ulcers needs an identification of their cause(s) and a good knowledge of their physiopathology, in order to ensure adequate treatment. The purpose of this presentation is to remind of the diversity of physiopathological mechanisms involved in the onset of these ulcers.