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Wagner’s classification of diabetic foot ulcers (1).
| Grade | Characteristic |
|---|---|
| Wagner grade 1 | Partial- or full-thickness ulcer (superficial) |
| Wagner grade 2 | Deep ulcer extending to ligament, tendon, joint capsule, bone, or deep fascia without abscess or OM |
| Wagner grade 3 | Deep abscess, OM, or joint sepsis |
| Wagner grade 4 | Partial-foot gangrene |
| Wagner grade 5 | Extensive gangrene involving the entire foot. |
