[Phlebitis of effort of the lower limb]

Effort phlebitis of the lower extremity is rare but does occur : a patient was seen who suffered sudden swelling of the left leg when he had almost finished unloading a lorry. Phlebography, which was carried out five months later, revealed lesions of the deep veins of the lower leg and of the thigh, in which vascular permeability was in the process of being restored. The hypothesis is advanced that a sudden pronounced rise of the venous pressure had led to the rupture of a valvular perforating vein with secondary formation of a clot.