Key result
Computer simulations of lateral impact motor vehicle crashes demonstrated that B-pillar intrusion causes the proximal aorta to act as a lever, exerting maximum stress (1.1-3.2 MPa) at the aortic isthmus.
Computer simulations of lateral impact motor vehicle crashes support the lever hypothesis for aortic isthmus rupture and suggest that strengthening the B-pillar and adding side airbags could prevent such injuries.
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Simulation support for aortic lever mechanism remains preliminary; hypothesis-generating for vehicle safety interventions pending validation.
Siegel et al. (2010) studied Aortic injury from lateral impact motor vehicle crashes (n=10). Lateral impact motor vehicle crash (B-pillar intrusion) was evaluated on Aortic wall stresses and strains. Computer simulations of lateral impact motor vehicle crashes demonstrated that B-pillar intrusion causes the proximal aorta to act as a lever, exerting maximum stress (1.1-3.2 MPa) at the aortic isthmus.
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