Leg Vein Anatomy

The smallest detail you can record about a leg change is where it sits. Location points to a vein, and a vein points to a question for a clinician. Cleveland Clinic says the great saphenous vein and the small saphenous vein are superficial veins in the legs.

This hub follows that one detail. It names the two veins and says where each runs, so you can match the spot you noticed to a vein.

The veins, one location at a time

Start at the spot you noticed and read outward from there.

• The small saphenous vein: Cleveland Clinic says the small saphenous vein extends from the foot to the back of the knee.
• The great saphenous vein: Cleveland Clinic calls the great saphenous vein the longest vein in the body, traveling between the foot and the top of the thigh.

Cleveland Clinic adds that saphenous veins, like most veins in the body, send oxygen-poor blood back to the heart. This page stays with location, because location is the part you can check yourself.

Where to go next

Start with the Cleveland Clinic guide to the saphenous vein if you want the anatomy in one place. If the change looks like a bulge or a twisting vein, the MedlinePlus page on varicose veins and spider veins describes both. For a thin web of color, the Cleveland Clinic page on spider veins is the closer match. If symptoms go beyond one spot, the Cleveland Clinic overview of venous disease frames the wider picture.

Write down where the change is, when it shows up, and whether it has moved. If it keeps appearing or you cannot explain it, book a visit and bring those notes.