Finite element stress analysis of an intervertebral disc.

Details

• Personal Author:
  Belytschko T ; Galante JO ; Kulak RF ; Schultz AB ; Belytschko T ; Galante JO ; Kulak RF ; Schultz AB
• Description:
  An axisymmetric finite element model is employed for the study of the behavior of an intervertebral disc under axial loading. By matching experimental results on the overall behavior of the disc, orthotropic linear material constants are obtained for the annulus fibrosis for various load levels. Results are then presented on the effects of material properties and geometry on the stress- distribution and intradiscal pressures. It is shown that: (1) an adequate representation of disc behavior requires the inclusion of material anisotropy; (2) material properties of the annulus obtained by direct measurement underestimate the stiffness of the material; (3) reasonable predictions of variations of disc stiffness with vertebral level can be made on the basis of geometry; and (4) degenerative changes associated with loss of elasticity have little effect on the intradiscal pressure, while annular tears result in reduced pressure in agreement with clinical observations. [Description provided by NIOSH]
• Subjects:
  Anatomy Occupational Health Safety
• Keywords:
  Bones NIOSH-Grant NIOSH-Publication Osteology Physics Physiology Spines Vertebrae
• ISSN:
  0021-9290
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article ; Journal Article
• Place as Subject:
  Illinois ; OSHA Region 5
• CIO:
  National Institute for Occupational Safety and Health (NIOSH) ; National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health ; Workplace Safety & Health
• Location:
  North America ; North America
• Pages in Document:
  277-285
• Volume:
  7
• Issue:
  3
• NIOSHTIC Number:
  nn:00043571
• Citation:
  J Biomech 1974 May; 7(3):277-285
• Contact Point Address:
  Materials Engineering University of Illinois Dept of Materials Engr, Bx4348 Chicago, Ill 60680
• Federal Fiscal Year:
  1974
• Performing Organization:
  University of Illinois Chicago Circle, Chicago, Illinois
• Peer Reviewed:
  True
• Start Date:
  19740401
• Source Full Name:
  Journal of Biomechanics
• End Date:
  19860831
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:106e99a695512e89ed3c238ed600a96936612bb583f787d5f0beab6cd7c041fc9f8b146e30dcbf06a2d46a51f983b08eff6d8053dbb8961155dc0b668864790c
• Download URL:
  https://stacks.cdc.gov/view/cdc/184019/cdc_184019_DS1.pdf
• File Type:
  [PDF - 810.27 KB ]