What is the percentage allocated to each arm in the Rule of Nines for adults?

In the Rule of Nines, used for quick estimation of body surface area affected by burns in adults, each arm is allocated a percentage of 9%. This system divides the body into segments that can be easily memorized, aiding in rapid assessment during emergency situations. Each arm representing 9% reflects the understanding that it is one of the major areas considered during triage and treatment decisions for burn patients.

This percentage helps healthcare providers quickly determine the total body surface area (TBSA) impacted by burns, which is crucial for guiding fluid resuscitation and other medical interventions. The allocated percentages for the head and neck, torso, and legs differ, but the allocation for each arm consistently remains at 9%.