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  • Title: Foot volumetry and duplex ultrasonography after saphenous and subfascial perforating vein ligation for recurrent venous ulceration.
    Author: Bradbury AW, Stonebridge PA, Callam MJ, Ruckley CV, Allan PL.
    Journal: Br J Surg; 1993 Jul; 80(7):845-8. PubMed ID: 8369911.
    Abstract:
    Forty-three patients undergoing superficial and perforating vein ligation for recurrent venous ulceration underwent preoperative and postoperative foot volumetry and postoperative duplex ultrasonography. Patients were followed for a median of 66 (range 18-144) months. Of nine patients who developed recurrent ulceration, six had femoral vein incompetence and all had popliteal vein incompetence demonstrated by duplex ultrasonography. Of the 34 patients who remained ulcer-free, five had femoral vein incompetence and a single patient had popliteal vein incompetence on duplex scanning, giving positive predictive values for recurrent ulceration of 55 per cent (femoral vein incompetence) and 90 per cent (popliteal vein incompetence). Patients with saphenofemoral incompetence on late follow-up were also more likely to suffer recurrence. Preoperative foot volumetry with tourniquet occlusion of superficial veins showed that the median expulsion fraction of patients who developed recurrent ulcer during follow-up was 0.8 (range 0.6-2.3) per cent compared with 1.5 (range 0.4-2.9) per cent for those who remained ulcer-free (P = 0.025); the median half-refilling time of patients with recurrent ulcer was 1.5 (range 0.5-5.5) s compared with 5.0 (range 0.5-23.0) s for those without recurrence (P < 0.01). Postoperative foot volumetry showed similar differences. Deep venous incompetence, particularly of the popliteal segment, as demonstrated by duplex ultrasonography and foot volumetry, is a useful predictor of recurrent ulceration after subfascial perforator and superficial venous ligation.
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