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A 69-year-old female patient was admitted to our hospital with gangrene of her left first and second digits. Angiography showed a diffuse occlusive lesion from the external iliac artery to the crural arteries. Endovascular therapy to the external iliac artery, above-knee femoropopliteal bypass with a polytetrafluoroethylene graft, and popliteal–tibial bypass through a posterior approach with the short saphenous vein graft were performed in 3 stages because the length of the great saphenous vein that was suitable for grafting was insufficient. Vascular surgeons should be aware of the posterior approach as an effective alternative procedure for infragenicular revascularization.