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The Rutherford peripheral obliterative arteriopathy classification
| Grade | Category | Clinical assessment |
|---|---|---|
| 0 | 0 | Asymptomatic |
| I | 1 | Mild claudication |
| I | 2 | Moderate claudication |
| I | 3 | Severe claudication |
| II | 4 | Ischaemic pain at rest |
| III | 5 | Slight loss of tissue |
| III | 6 | Significant loss of tissue |
