University of Texas Classification of Diabetic Foot
| Stage | Grade 0 | Grade 1 | Grade 2 | Grade 3 |
|---|---|---|---|---|
| Stage A | Preulcerative or postulcerative lesion completely epithelialized | Superficial wound, not involving tendon, capsule or bone | Wound penetrating to tendon or capsule | Wound penetrating to bone or joint |
| Stage B | Infection | Infection | Infection | Infection |
| Stage C | Ischemia | Ischemia | Ischemia | Ischemia |
| Stage D | Infection and ischemia | Infection and ischemia | Infection and ischemia | Infection and ischemia |
