Grade I | No subjective or objective evidence of reaction |
Grade II | Slight erythema and or oedema |
Grade III | Considerable erythema and/or oedema with some blistering; slightly disturbed motility |
Grade IV | Extensive epidermolysis and/or obvious damage to the deep tissue, causing definite functional disturbances; threatening or manifest compartiment syndromes |
Grade V | Severe reaction which may necessitate amputation |