Rutherford classification

Stage 0 – Asymptomatic

Stage 1 – Mild claudication

Stage 2 – Moderate claudication – The distance that delineates mild, moderate and severe claudication is not specified in the Rutherford classification, but is mentioned in the Fontaine classification as 200 meters.

Stage 3 – Severe claudication

Stage 4 – Rest pain

Stage 5 – Ischemic ulceration not exceeding ulcer of the digits of the foot

Stage 6 – Severe ischemic ulcers or frank gangrene