Six Year Extension Study of Patients From a Randomised Clinical Trial Comparing Venefit, Radiofrequency Induced Thermal Therapy, and Endovenous Radiofrequency Ablation for Treatment of Incompetent Great Saphenous Veins.

Objective: To compare long term outcomes after great saphenous vein (GSV) treatment with three radiofrequency (RF) thermal devices: Venefit (Closurefast), Radiofrequency Induced Thermal Therapy (RFITT), and Endovenous Radiofrequency (EVRF).

Design: A 72 month follow up of patients who were treated in the randomised 3RF study.

Methods: A total of 172 participants from the 3RF study were invited to take part in a single visit, long term, follow up study.