NDLI: Uncertainty Analysis for Biomechanical Injury of Cervical Spine Column

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Jang, Taek Hyun Ekwaro-Osire, Stephen Gill, J. Brian Hashemi, Javad
Copyright Year	2008
Abstract	Uncertain parameters exist in complex structures, such as the cervical spine, and they may produce unexpected significant influences on the structures. Therefore, for an accurate injury analysis of the cervical spine, it is essential to consider the uncertainties contained in the cervical spine components. For this research, motions segment of finite element C5-C6 motion segment was created and validated based on experimental data under various loading conditions. Young’s moduli of the cervical spine components were considered random variables. Then, based on the sensitivity analysis, Young’s moduli of the disc annulus and nucleus were considered random fields. Each random field was discretized into three and four sets of random variables for the disc annulus and nucleus, respectively. Using sets of random variables discretized from a random field, the sensitivities of the sensitive parameters were reduced to less than 0.05, in which the randomness may be ignored without losing analysis accuracy. The variance for probabilistic injury function was also decreased after random field analysis procedure. Moreover, considering material properties to be a random field, the reliability also increased. Reliability increased by 12.69% when Young’s modulus of both the disc annulus and nucleus were considered random fields.
Starting Page	545
Ending Page	551
Page Count	7
File Format	PDF
ISBN	9780791848630
DOI	10.1115/IMECE2008-67857
e-ISBN	9780791838402
Volume Number	Volume 2: Biomedical and Biotechnology Engineering
Conference Proceedings	ASME 2008 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2008-10-31
Publisher Place	Boston, Massachusetts, USA
Access Restriction	Subscribed
Subject Keyword	Chaos Uncertainty Sensitivity analysis Wounds Biomechanics Young's modulus Materials properties Annulus Disks Finite element analysis Reliability Uncertainty analysis Cervical spine
Content Type	Text
Resource Type	Article

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