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| Grade | Local infection; foot | Systemic infection (SIRS) |
|---|---|---|
| 0 | (−) | (−) |
| 1 | (+) | (−) |
| Involving only the skin and the subcutaneous tissue (Erythema around the ulcer; 0.5–2 cm) | ||
| 2 | (+) | (−) |
| Involving only the skin and the subcutaneous tissue (Erythema around the ulcer; >2 cm), or involving structures deeper than skin and subcutaneous tissues (e.g., abscess, osteomyelitis, septic arthritis, fasciitis) | ||
| 3 | (+) | (+) |
