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Wagner classification of diabetic foot ulcer.
| Grading | Symptoms |
|---|---|
| Grade 0 | No ulcer |
| Grade 1 | Superficial ulceration, involving the entire thickness of the skin but not the subcutaneous tissue |
| Grade 2 | Deep ulcers penetrating into muscle layers and ligaments without bone involvement and without abscess |
| Grade 3 | Deep ulcers with cellulitis or abscess formation, often accompanied by osteomyelitis |
| Grade 4 | Local small gangrene |
| Grade 5 | Extensive gangrene involving entire foot |
