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Rutherford classification.
| Classification | Symptoms |
|---|---|
| Grade 0 | Asymptomatic |
| Grade 1 | Mild intermittent claudication ∗ |
| Grade 2 | Moderate intermittent claudication ∗∗ |
| Grade 3 | Severe intermittent claudication ∗∗∗ |
| Grade 4 | Pain at rest |
| Grade 5 | Limited ulcer, necrosis |
| Grade 6 | Extensive ulceration, necrosis |
Note:∗: With the help of treadmill, the slope is 12%, the speed is 60–70 m/min, the pain-free walking distance (PFWD) is > 300–500 m, ∗: PFWD is > 100–300 m, ∗: PFWD ≤ 100 m.
