Only a small part of the varicose veins need inpatient treatment. Restricting strippings to the diseased saphenous segments and the use of Muller's technique (phlebectomie ambulatoire'] permits the majority of patients to be treated on an ambulatory basis. In 1990 and 1-991, 453 of 723 operations were performed under local anesthesia. 233 of the 686 insufficient long and short saphenous veins were treated by high ligation - with or without stripping - in local anesthesia. The limitations of ambulatory surgery are defined by the extension of the varices and by the presence of a seriously diseased long saphenous vein necessitating a stripping.