An accidentology investigation called "TYPOLOGY" is being carried out in two phases. the first was between 1981 and 1983 and then ten years later, the second started in 1993 and will be completed end 1994. This investigation has a dual objective: on the one hand to study the accident typology of road traffic users in relation to type, frequency and seriousness of the lesions received. and on the other hand the development of this typology
In this study, we will try to analyse pedestrian injury trends, taking into account the pedestrian's profile development according to sex, age,..... We will then pay particular attention to lower limb injuries. and especially possible changes in the lesion distribution over the length of the leg.
As a severity score primarily based on the notion of mortality risk; AIS under estimates the non-mortal lesions, even if they represent a significant morbidity risk, as these lesions require long hospitalisation periods and cause permanent disabilities. In this 1.1.8. study we will introduce the Injury Impairment Scale which makes it possible to measure the severity level of the physiological injury or the importance of the physical handicap suffered by the injured person and which is associated to AIS-90.