Objective: To investigate the clinical efficacy of ultrasound-guided radiofrequency ablation and microwave ablation in the treatment of primary saphenous varicose veins.
Age ≥18 years and ≤90 years;
Clinical diagnosis of primary varicose veins of the lower extremities, CEAP clinical classification C2-C6, requiring treatment of the great and/or small saphenous vein segments, and at least 1 of the clinical symptoms of swelling, pain, burning sensation, heaviness, easy fatigue, itchy skin, and night cramps;
Valve insufficiency of the great saphenous vein, small saphenous vein, or transport vein;
Doppler ultrasound confirmation of a saphenous vein diameter greater than 3 mm and less than 12 mm in the standing position;
Thrombosis of the great saphenous or small saphenous vein, or combined deep vein thrombosis, or previous history of deep vein thrombosis or pulmonary embolism.
Recurrent varicose veins after previous treatment.
Severe distortion of the great saphenous vein with anticipated catheter failure.
Severe lower limb ischaemia (CLI) (ABPI <0.8).