In patients with varicose veins in the leg fossa, the varicose veins are often not very severe, as they are rarely more severe in the leg fossa. For these patients, sclerotherapy injections can be very useful in eliminating the varicose veins. The sclerotherapy injection is a chemical effect that destroys the lining of the blood vessels and can cause sterile inflammation of the blood vessels, which eventually forms dense fibrous strips and makes the varicose veins disappear completely and can cure the varicose veins completely. If the varicose veins in the leg fossa are more severe, an ultrasound can be done first to determine whether the varicose veins in the leg fossa are from the great or small saphenous vein. Depending on the source of the veins, the treatment should be done accordingly, mainly by removing the varicose veins completely, which can be done by laser and radiofrequency methods.