Nonlinear behavior of the human intervertebral disc under axial load.

Details

• Personal Author:
  Belytschko TB ; Galante JO ; Kulak RF ; Schultz AB
• Description:
  The nonlinear, rate-independent behavior of human intervertebral discs is studied with a finite element model which incorporates a nonlinear elastic constitutive relation for the annulus fibrosis. The elastic coefficients and a nonlinear constitutive parameter for the annulus fibrosis were obtained by matching experimental results for the disc's load-deflection behavior. The axisymmetric finite element model includes the annulus, end plates, portions of the vertebral bodies and an incompressible nucleus pulposus. Results for annulus bulging, internal pressures, and response variations due to level-to-level changes in geometry are in agreement with available experimental data. It is shown that there are marked differences in the compressive behavior of lumbar and thoracic discs. In addition, two types of degeneration, one characterized by annular tears, the other by a desiccated nucleus, are studied. [Description provided by NIOSH]
• Subjects:
  Musculoskeletal System Occupational Health Safety
• Keywords:
  Biodynamics Elastic-deformation Elastic-properties Mechanical-properties NIOSH-Grant NIOSH-Publication Skeletal-system Spinal-column Stress-strain-mechanism
• ISSN:
  0021-9290
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  Illinois ; OSHA Region 5
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  377-386
• Volume:
  9
• Issue:
  6
• NIOSHTIC Number:
  nn:00057377
• Citation:
  J Biomech 1976 Jan; 9(6):377-386
• Contact Point Address:
  Materials Engineering University of Illinois Dept of Materials Engr, Bx4348 Chicago, Ill 60680
• Federal Fiscal Year:
  1976
• 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-512:3e1db2e140c5e32c92b45117d382891c317a1a4aece981d57ad59e76b1ca3cd954d6be69d8b72dbe94627ae7e9a238b8e9478e5b00681787d49b4edc3f03432c
• Download URL:
  https://stacks.cdc.gov/view/cdc/184117/cdc_184117_DS1.pdf
• File Type:
  [PDF - 1022.19 KB ]