Abstract
Lower extremity injuries are a frequent, costly, and are a debilitating result of automobile crashes. Accident surveys attribute most below-knee injuries to intrusion of the footwell structure. This paper correlates the level of footwell intrusion with the frequency and severity of lower limb injury. Accident investigations, crash test data, and simulation results suggest that factors such as the vehicle's change in velocity and the rate and timing of intrusion must be considered when examining injury mechanisms of the lower extremities.