Rule of 9: Burn

Wallace Rule of Nine
For rough estimation of the body surface area that is affected by Burn, Wallace rule of nine is used. It  is used for adult. Slight modification is done in case of children as they have larger head compared to adults and hence Lund and Browder chart is used. The skin is grossly allocated the value of 9% as demostrated in the chart and diagram below.

Wallace Rule of Nine
(source: https://twitter.com/pjonline_news/status/596994284466802688)

Body part
Head	9%
Right upper extremity	9%
Left Upper extremity	9%
Anterior Chest	9%
Posterior Chest	9%
Anterior right lower extremity	9%
Posterior left lower extremity	9%
Posterior right lower extremity	9%
Posterior left lower extremity	9%
Perineum	1%
Total	100%

Body part

Head

9%

Right upper extremity

9%

Left Upper extremity

9%

Anterior Chest

9%

Posterior Chest

9%

Anterior right lower extremity

9%

Posterior left lower extremity

9%

Posterior right lower extremity

9%

Posterior left lower extremity

9%

Perineum

1%

Total

100%