When varicose veins are destroyed, does the blood still circulate?

The short answer is yes.

It’s important to note that there are two types of veins in the legs: superficial veins (just under the skin, e.g. saphenous vein) and deep veins, the latter of which carry the great majority of your blood back to the heart.

Varicose veins only affect the superficial veins, as they rely on their one-way valves for blood to flow in the right direction. After the varicose veins are ablated (destroyed), the blood travels up the deep, healthy veins that are functioning well, helping blood to circulate around the body.