[Leg ulcer. Vascular and thrombosis factors. Each responsibility of those factors? (author's transl)].

In this paper the authors try to specify the leg ulcers physiopathology. They have first studied the vascular deficits, and they are able to conclude that this deficit is not the only factor responsible for the thrombosis. They try to rediscover the factors which could lead to the thrombosis, on the created local conditions (circulatory slackening, cooling, ischemia), by using clinical and biological "check-ups" as well as an exploration of the clotting. In many patients we find an anomaly such as: clotting "check-ups" disturbance, thrombocyte hyperaggregability, fibrinolysis deficit, antithrombin III deficit, cryoprecipitate, circulating immune complexes, hepatic "check-up" alteration. It is difficult to establish an accurate relation between these anomalies and a thrombosis but the frequent existence of such anomalies makes us think that they play a part in the ulcerations coming-up.