To preserve the venous function after deep vein thrombosis, physical treatment combines elastic stockings, active exercises, lower limbs elevation, ventilatory exercises and manual lymph drainage. When this traditional treatment is not sufficient, we use a new technique. It aims at fragmenting thrombus by compressing it between the physiotherapist's fingers and the patient's bone. In order to define the fragmentation sites we use the Triplex ultrasonography. This technique has been tested on ten patients with serious thrombosis, whom the thromboembolic risk was first controlled. The evaluation was performed by the clinical examination, echography and occlusive impedance plethysmography rheography. The improvement of the subjective and objective signs leads to use our technique. It has to be validated on a larger scale to extend its use.