Độ III: Tổn thương hoàn toàn hết ch

Level III: complete injury most of the thickness of the skin, held under the skin has been hurt but the injury only just outside the borough resident loss. class Level IV: Họai Prince of entire layers of the skin that when spread to the whole region of the body, bones, joints ... sometimes creates more complex buildings.

Grade III: Injury to completely empty the thickness of the skin, subcutaneous organization has hurt but only localized lesions in addition to weight grades.
Grade IV: the entire layer of skin necrosis have to spread to all body areas , bones, joints ... sometimes create more complex nooks.