The great saphenous vein and landmarks along its course
The great saphenous vein and its tributaries at the saphenous opening
Superficial veins draining into the great saphenous and femoral vein.
Superficial veins of lower limb. Superficial dissection. Anterior view.
Great saphenous vein. Deep dissection. Anterior view.
Illustration depicting veins of the leg including great saphenous vein (anterior view).

It is perforated by the great saphenous vein and by numerous blood and lymphatic vessels.

- Cribriform fascia

In the proximal anterior thigh 3–4 cm inferolateral to the pubic tubercle, the great saphenous vein dives down deep through the cribriform fascia of the saphenous opening to join the femoral vein.

- Great saphenous vein
The great saphenous vein and landmarks along its course

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Overall

The fossa ovalis.

Saphenous opening

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Oval opening in the upper mid part of the fascia lata of the thigh.

Oval opening in the upper mid part of the fascia lata of the thigh.

The fossa ovalis.
The great saphenous vein and its tributaries at the fossa ovalis.
Superficial veins of lower limb Superficial dissection. Anterior view.

It is covered by a thin perforated part of the superficial fascia called the fascia cribrosa which is pierced by the great saphenous vein, the 3 superficial branches of the femoral artery(except superficial circumflex iliac artery, which pierces fascia lata lateral to the saphenous opening), and lymphatics.