An escharotomy is a surgical procedure used to treat full-thickness (third-degree) circumferential burns. In full-thickness burns, both the epidermis and the dermis are destroyed along with sensory nerves in the dermis. The tough leathery tissue remaining after a full-thickness burn has been termed eschar.
thoracotomy is a surgical procedure to gain access into the pleural space of the chest....... therefore escharotomy is done to treat this 3rd degree case