Femoropopliteal (fem-pop) bypass surgery is used to bypass blocked arteries above or below the knee. The bypass restores blood flow to the leg.

To bypass the blocked artery, blood is redirected through a graft. The graft is either a healthy blood vessel that has been transplanted or a man-made material. This graft is sewn onto both the femoral and popliteal arteries so that blood can travel through the graft and around the blockage.