In the adult Rule of Nines, what percentage is assigned to one leg?

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Multiple Choice

In the adult Rule of Nines, what percentage is assigned to one leg?

Explanation:
The Rule of Nines estimates burn size by assigning 9% increments to body regions. In adults, each leg accounts for 18% of the total body surface area, reflecting the combined front and back surfaces of the leg (each contributing 9%). That means one leg is 18% of TBSA. The other options don’t fit because 9% corresponds to a single limb surface like an arm or the head/neck, while 21% and 13% aren’t used compartments in the adult Rule of Nines.

The Rule of Nines estimates burn size by assigning 9% increments to body regions. In adults, each leg accounts for 18% of the total body surface area, reflecting the combined front and back surfaces of the leg (each contributing 9%). That means one leg is 18% of TBSA. The other options don’t fit because 9% corresponds to a single limb surface like an arm or the head/neck, while 21% and 13% aren’t used compartments in the adult Rule of Nines.

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