[Comparison of clinical and instrumental with intraoperative endoscopic localization of insufficient perforant veins].

In a prospective study the number and localization of the incompetent perforating veins of the limb were determined by clinical examination, colour-coded Doppler-ultrasound and intraoperatively by endoscopy. The results of the different methods were compared. Neither by clinical examination nor by Doppler-ultrasound all of the incompetent perforating veins can be found and exactly localized. The endoscopy of the subfascial space of the calf allows to securely find all of the incompetent perforating veins and to dissect them easily and completely.