see also Injury Severity Score.

Is an anatomically based consensus-derived global severity scoring system that classifies each injury in every body region according to its relative severity on a six point ordinal scale:

Minor 1

Moderate 2

Serious 3

Severe 4

Critical 5

Maximal (currently untreatable) 6

There are nine AIS chapters corresponding to nine body regions:

Head

Face

Neck

Thorax

Abdomen

Spine

Upper Extremity

Lower Extremity

External and other.