Virtual traumas of the liver: benefits of dynamical experimental
tests and numerical modelling
CHEYNEL N
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BRUNET C
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TROPIANO P
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BERDAH S
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ARNOUX PJ
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THOLON L
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SERRE T
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MASSON C
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DERVICHIAN M
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ALLIOT P
Seance of wednesday 24 march 2004 (ORTHOPEDIE)
Abstract
From clinical knowledge, it was established that hepatic traumas areone of the most frequently fatal injuries. Largely studied in theliterature, the injury mechanisms were described from clinicalobservations and on logical deductions from physical interpretation.However, these physiopathological data had not been validated byspecific biomechanical work.To identify the mechanical behaviour of human trunk in frontalimpact situation, experimental tests were performed on cadavers.The subject were instrumented with specific accelerometer sensorslocated on the significant parts and the attach system of the hepaticparenchyma. To complete this approach, numerical simulation wasused. It concerned an accurate 3D reconstruction of the organs, ananthropometric study to take into account human variability inmorphology up to the numerical simulation with finite elementmethod. With this model, validated using experimental results, it isnow possible to observe virtual traumas in large impactconfigurations.
