Grade 0

Lesion

epithelialized

Grade 1

Wound

superficial

Grade 2 Tendon involvement

Grade 3

Damage to the bone or joint

Stage A

No infection

No ischemia

0A

1A

2A

3A

Stage B

Infection, but

No ischemia

0B

1AB

2B

3B

Stage C

No infection

But ischemia

0C

1C

2C

3C

Stage D

Infection and ischemia

0D

1D

2D

3D