Modelling of forefoot injuries caused by brake pedal loading – a finite element analysis case study
© Mutingwende et al; licensee BioMed Central Ltd. 2014
Published: 8 April 2014
Lower extremity injuries, in particular the foot/ankle are one of the most common in automotive crashes. Although not life threatening, they can lead to long term medical complications or permanent disability[²]. In most cases foot and/or ankle fractures are caused during frontal automotive crashes, while the driver attempts an emergency brake and the foot is subject to crash loading [³]. In these cases, fractures of the forefoot, in particular the metatarsals are very common  and range from simple fractures to severe crush injuries . The location of metatarsal fractures in a car crash victim can be dictated by the loading pattern . However, there is little information about whether the pedal has an effect on the mechanism or extent of injury. In order to evaluate the effect of brake pedal loading on the injury tolerance of the metatarsal, a computer based finite element analysis was performed to assess the regional capabilities in terms of loading transmission around the forefoot.
The results of the current study show that the locations of the maximum stresses appear on the second and third metatarsals. This compares with findings from crash data.
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