title: Regional brain strains and role of falx in lateral impact-induced head rotational acceleration.
abstract: The objective of the present investigation is to determine localized brains strains in lateral impact using finite element modeling and evaluate the role of the falx. A two-dimensional finite element model was developed and validated with experimental data from literature. Motions and strains from the stress analysis matched well with experimental results. A parametric study was conducted by introducing flexible falx in the finite element model. For the model with the rigid falx, high strains were concentrated in the corpus callosum, whereas for the model with the flexible falx, high strains extended into the cerebral vertex. These preliminary findings indicate that the flexibility of falx has an effect on regional brain strains in lateral impact.
authors.affiliation: Department of Neurosurgery, Medical College of Wisconsin and VA Medical Center, Milwaukee, WI, USA.
authors.forename: Jianrong
authors.initials: J
authors.lastname: Li
authors.forename: Jiangyue
authors.initials: J
authors.lastname: Zhang
authors.forename: Narayan
authors.initials: N
authors.lastname: Yoganandan
authors.forename: Frank
authors.initials: F
authors.lastname: Pintar
authors.forename: Thomas
authors.initials: T
authors.lastname: Gennarelli
mesh_terms: D000054:Acceleration / Q000009:adverse effects*; D001921:Brain / Q000503:physiopathology*; D001930:Brain Injuries / Q000209:etiology / Q000503:physiopathology*; D003198:Computer Simulation; D004548:Elasticity; D006257:Head / Q000503:physiopathology*; D019416:Head Movements; D006801:Humans; D008959:Models, Neurological; D010812:Physical Stimulation / Q000009:adverse effects*; D012399:Rotation; D013314:Stress, Mechanical