Two-year outcomes of ThermoBlock radiofrequency ablation in chronic saphenous vein insufficiency: A single-center experience with 910 cases

Chronic venous insufficiency is a prevalent condition that significantly impairs QoL and imposes a substantial socioeconomic burden. Endovenous thermal ablation techniques have largely replaced conventional surgery owing to their high efficacy and lower complication rates. The ThermoBlock RFA system integrates precise thermal control with laser-guided catheter positioning, potentially enhancing procedural accuracy and outcomes. In this large, single-center study of 910 patients with advanced saphenous vein insufficiency, ThermoBlock RFA achieved a 97.6% closure rate at 3 months, with marked improvements in Venous Clinical Severity Score and VEINES-QOL/Sym scores, and a low incidence of major complications. These findings support ThermoBlock RFA as a safe, effective, and reproducible first-line option for the treatment of chronic venous insufficiency, even in patients with large-diameter great saphenous veins.