1Prince of Wales Medical Research Institute, Randwick, Sydney, NSW, Australia
Abstract
High back booster (HBB) seat use was studied in the field and in the laboratory. This paper presents details of a case series of 19 children using HBBs in real world crashes. More than half were using HBBs when a forward facing restraint would have been more suitable (i.e. inappropriately), and incorrect use was identified in 3 cases. All serious injury occurred in children inappropriately or incorrectly using HBBs. Laboratory simulations modelled on real world cases demonstrate a greater injury potential in misused HBBs than in correctly used HBBs due to excessive upper body excursion.