The score describes three aspects of the injury using seven numbers written as 12(34)(56).7 • Type • Location • Severity Each number signifies • 1- body region • 2- type of anatomical structure • 3,4- specific anatomical structure • 5,6- level • 7- Severity of score
Severity Abbreviated Injury Score-Code is on a scale of one to six, one being a minor injury and six being maximal (currently untreatable). An AIS-Code of 6 is not the arbitrary code for a deceased patient or fatal injury, but the code for injuries specifically assigned an AIS 6 severity. An AIS-Code of 9 is used to describe injuries for which not enough information is available for more detailed coding, e.g. crush injury to the
head. The AIS scale is a measurement tool for single injuries. A universally accepted injury aggregation function has not yet been proposed, though the
injury severity score and its derivatives are better aggregators for use in clinical settings. In other settings such as automotive design and occupant protection, MAIS is a useful tool for the comparison of specific injuries and their relative severity and the changes in those frequencies that may result from evolving motor vehicle design. == Usage in the European Union==