Finite element modelling of paediatric head impact: Global validation against experimental data

Biomechanics of the human head has been widely studied for several decades. At a mechanical level, the use of engineering and finite element (FE) methods has allowed injury mechanisms to be investigated using biofidelic FE models. These models are generally validated using experimental data then used to simulate real-world head trauma in order to derive numerical tolerance limits, leading to efficient injury predicting tools. Due to ethical issues, experimental tests on the paediatric population remain prohibitive so direct validations of numerical models cannot be performed. However injury biomechanics on paediatric population is emerging with experimental tests on the paediatric cadavers or tests on biological tissue and the development of finite element models. The present paper proposes a new finite element model of a newborn head, simulating its main features, with material properties from the literature. Global validation of the model against experimental data in terms of skull deflection is performed and the model is used to simulate paediatric skull fracture coming from real-world head trauma.

[1]  Rémy Willinger,et al.  Improved head injury criteria based on head FE model , 2008 .

[2]  Brittany Coats,et al.  Material properties of human infant skull and suture at high rates. , 2006, Journal of neurotrauma.

[3]  Susan S. Margulies,et al.  Characterization of Pediatric Porcine Skull Properties during Impact , 2003 .

[4]  J. Vander Sloten,et al.  P020 Bending properties of cranial bone segments of new-born children , 1998 .

[5]  Rémy Willinger,et al.  Child head injury criteria investigation through numerical simulation of real world trauma , 2009, Comput. Methods Programs Biomed..

[6]  T J Kriewall,et al.  The elastic modulus of fetal cranial bone: a first step towards an understanding of the biomechanics of fetal head molding. , 1980, Journal of biomechanics.

[7]  King H. Yang,et al.  Investigation of Head Injury Mechanisms Using Neutral Density Technology and High-Speed Biplanar X-ray. , 2001, Stapp car crash journal.

[8]  R. Willinger,et al.  Shear Properties of Brain Tissue over a Frequency Range Relevant for Automotive Impact Situations: New Experimental Results. , 2004, Stapp car crash journal.

[9]  Tania Leyva Mastrapa,et al.  Depressed skull fracture in Ping Pong: elevation with Medeva extractor , 2007, Child's Nervous System.

[10]  W. Weber,et al.  [Experimental studies of skull fractures in infants]. , 1984, Zeitschrift fur Rechtsmedizin. Journal of legal medicine.

[11]  A. Dekaban,et al.  Tables of cranial and orbital measurements, cranial volume, and derived indexes in males and females from 7 days to 20 years of age , 1977, Annals of neurology.

[12]  M. Prange,et al.  Regional, directional, and age-dependent properties of the brain undergoing large deformation. , 2002, Journal of biomechanical engineering.

[13]  A. Nahum,et al.  Intracranial Pressure Dynamics During Head Impact , 1977 .

[14]  T J Kriewall,et al.  Bending properties and ash content of fetal cranial bone. , 1981, Journal of biomechanics.

[15]  Roger W Nightingale,et al.  Mechanical properties and anthropometry of the human infant head. , 2004, Stapp car crash journal.

[16]  J. Langlois,et al.  Traumatic brain injury in the United States; emergency department visits, hospitalizations, and deaths , 2006 .

[17]  Rémy Willinger,et al.  Limitation of scaling methods in child head finite element modelling , 2007 .

[18]  R. Willinger,et al.  Modal and temporal analysis of head mathematical models. , 1995, Journal of neurotrauma.

[19]  D. J. Thomas,et al.  Biomechanics of skull fracture. , 1995, Journal of neurotrauma.

[20]  S. Margulies,et al.  Age-dependent material properties of the porcine cerebrum: effect on pediatric inertial head injury criteria. , 1998, Journal of biomechanics.

[21]  Kathleen Desantis Klinich,et al.  Estimating infant head injury criteria and impact response using crash reconstruction and finite element modeling. , 2002, Stapp car crash journal.

[22]  Rémy Willinger,et al.  Finite element analysis of impact and shaking inflicted to a child , 2007, International Journal of Legal Medicine.

[23]  H von Holst,et al.  Serious brain injury from traffic-related causes: priorities for primary prevention. , 1997, Accident; analysis and prevention.

[24]  Songbai Ji,et al.  Parametric study of head impact in the infant. , 2007, Stapp car crash journal.

[25]  T J Kriewall,et al.  Structural, mechanical, and material properties of fetal cranial bone. , 1982, American journal of obstetrics and gynecology.

[26]  S. Margulies,et al.  Infant skull and suture properties: measurements and implications for mechanisms of pediatric brain injury. , 2000, Journal of biomechanical engineering.