2005, Number 1
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Rev Mex Ing Biomed 2005; 26 (1)
Analysis of compression efforts in human skull by using the finite element method
Nieto MJJ, Minor MA, Álvarez GJ, Alonso VMA, Algorri GME
Language: Spanish
References: 10
Page: 16-21
PDF size: 480.22 Kb.
ABSTRACT
We present the construction of a model of the human skull using the Finite Element Method. The geometry is given by 124 MRI images of the human head. The MRI images are digitized and the data are input into the Ansys Software (Ansys Inc) version 7.0. The model consists of 39,538 elements and 74,781 nodes. The physical properties that were considered were obtained from the scientific literature, the load and boundary conditions were applied in agreement with the position of a stereotactic frame fixed to the human head. In the analysis of intraskull stress, two positions were considered to apply four forces of compression to the skull. The intraskull pressure was also considered. The Von Mises stress patterns were calculated for each position, and the distribution of intraskull stress was obtained.
REFERENCES
Fodstad H, Hariz M, Ljunggren B. History of Clarke´s Stereotactic instrument, stereotactic funct. Neurosurg 1991; 57: 130-140.
Alonso VMA, Austria VJJ. Historia de la cirugía estereotáctica. Arch Neurocien (Mex) 2003; 8(3): 158-165.
Forcht DT. Stereotactic surgery. Neurosurgery Clin America 2001; 12(1): 69-90.
Johnson EAC, Young PG. On the use of a patient-specific rapid-prototyped model to simulate the response of the human head to impact and comparison with analytical and finite element models. J Biomech 2005; 38: 39-45.
Chung SC, Mish SL, Haw MH, Maw CL. Finite element analysis of cerebral contusion. J Biomech 1994; 27(2): 187-194.
Willinger R, Kang HS, Diaw B. Three-dimensional human head finite-element model validation against two experimental impacts. Annals of Biomedical Engineering 1999; 27: 403-410.
Kleiven S, Holst H. Consequences of head size following trauma to the human head. J Biomech 2002; 35: 153-160.
Min SC, Ho KS, Goldsmith. Finite element analysis of brain injury due to head impact. International Journal of Modern Physics B 2003; 17(8-9): 1355-1361.
Stalnaker RL. Mechanical properties of the head. Morgan-town: W. Virginia University, PhD Dissertation, 1969.
Rosner MJ. Pathophysiology an management of increased intracranial pressure In: Andrews BT, editor, Neurosurgical Intensive Care. McGraw-Hill (New York), 1993: 57-112.