Consequences of brain size following impact in prediction of subdural hematoma evaluated with numerical techniques.

Detailed and parametrised models of the adult human head were created by using the Finite Element Method (FEM). Different sizes of the brain and the subdural space were created, and the models were impacted towards padded surfaces in the frontal, temporal and occipital direction. The present results show for the first time that by reducing the brain size and thereby increasing the volume in the subdural space in the FE model, a significant increase in relative motion was found between the skull and brain.