What is the rule used to evaluate burn?

The rule used to evaluate burns is the "Rule of Nines," which estimates the total body surface area (TBSA) affected by burns in adults. According to this rule, the body is divided into sections, each representing approximately 9% (or multiples thereof) of the TBSA. For example, the head and neck account for 9%, each arm for 9%, each leg for 18%, the anterior trunk for 18%, and the posterior trunk for 18%. This quick assessment helps guide treatment decisions and fluid resuscitation needs.