[Substantiation of the extent of surgery in varicose veins of the lower extremities].

The authors have distinguished 2 forms of the varicose disease of lower extremities determining the volume of surgical operation. Since the "simple" form is characterized only by incompetent valves of the superficial veins, the radical veinectomy is thought to be a sufficient operation and gives a complete recovery of the adequate venous return. In patients with the 2nd form of the varicose disease the radical veinectomy only is not the optimal operative intervention. Ligation of incompetent perforated crus veins by super- or subfascial methods is indicated to such patients.