Skull deformation and vibration has been hypothesized to be an injury mechanism when the human head undergoes an impact scenario. The extent that skull deformation may increase the risk of traumatic brain injury, however, is not well understood. This computational study explains whether skull deformation has any impact on the variation of intracranial pressure (ICP). To this end, a finite element head model including major anatomical components of the human head was employed. The head model has been validated against ICP variations on the brain. The impact simulations were carried out using a rigid cylindrical impactor. The scenarios were frontal impacts with the impactor hitting the forehead of the head model at two impact severity levels. In order to examine the effect of skull elasticity on the stress wave propagation inside the cranium under an external applied force, the skull was also taken as a rigid body with the same density as the elastic one, and the result were compared with those obtained with the deformable skull. For the two cases, the variation of ICPs at the coup and countercoup sites were recorded and compared. The results of the study showed that, for the case studies presented here, the deformation of skull didn’t increase the level of ICP inside the brain. It was concluded that the skull rapid body motion might be responsible for brain injuries.
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ASME 2016 International Mechanical Engineering Congress and Exposition
November 11–17, 2016
Phoenix, Arizona, USA
Conference Sponsors:
- ASME
ISBN:
978-0-7918-5053-4
PROCEEDINGS PAPER
Skull Deformation Has No Impact on the Variation of Brain Intracranial Pressure Available to Purchase
Hesam Sarvghad-Moghaddam,
Hesam Sarvghad-Moghaddam
Harvey Mudd College, Claremont, CA
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Ashkan Eslaminejad,
Ashkan Eslaminejad
North Dakota State University, Fargo, ND
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Mariusz Ziejewski,
Mariusz Ziejewski
North Dakota State University, Fargo, ND
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Ghodrat Karami
Ghodrat Karami
North Dakota State University, Fargo, ND
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Asghar Rezaei
Mayo Clinic, Rochester, MN
Hesam Sarvghad-Moghaddam
Harvey Mudd College, Claremont, CA
Ashkan Eslaminejad
North Dakota State University, Fargo, ND
Mariusz Ziejewski
North Dakota State University, Fargo, ND
Ghodrat Karami
North Dakota State University, Fargo, ND
Paper No:
IMECE2016-67518, V003T04A042; 6 pages
Published Online:
February 8, 2017
Citation
Rezaei, A, Sarvghad-Moghaddam, H, Eslaminejad, A, Ziejewski, M, & Karami, G. "Skull Deformation Has No Impact on the Variation of Brain Intracranial Pressure." Proceedings of the ASME 2016 International Mechanical Engineering Congress and Exposition. Volume 3: Biomedical and Biotechnology Engineering. Phoenix, Arizona, USA. November 11–17, 2016. V003T04A042. ASME. https://doi.org/10.1115/IMECE2016-67518
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