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Related Concept Videos

General Structure of a Vertebra01:30

General Structure of a Vertebra

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A typical vertebra, with the exception of the sacrum and coccyx, consists of a body, a vertebral arch, and seven different projections termed processes. The anterior portion of the vertebrae, the body, supports about half the body’s weight. The vertebral bodies progressively increase in size and thickness from the cervical region to the lumbar region of the vertebral column. The intervertebral discs present between the bodies of adjacent vertebrae firmly unites them, forming a continuous...
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Structural Joints: Cartilaginous Joints01:17

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As the name indicates, at a cartilaginous joint, the adjacent bones are united by cartilage, a tough but flexible type of connective tissue. Unlike synovial joints, these types of joints lack a joint cavity and involve bones joined together by either hyaline cartilage or fibrocartilage.
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Synchondrosis
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Multicompartment Models: Overview01:14

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Multicompartment models are mathematical constructs that depict how drugs are distributed and eliminated within the body. They segment the body into several compartments, symbolizing various physiological or anatomical areas connected through drug transfer processes such as absorption, metabolism, distribution, and elimination.
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Related Experiment Video

Updated: Nov 1, 2025

A Proinflammatory, Degenerative Organ Culture Model to Simulate Early-Stage Intervertebral Disc Disease.
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A Proinflammatory, Degenerative Organ Culture Model to Simulate Early-Stage Intervertebral Disc Disease.

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A Robust Multiscale and Multiphasic Structure-Based Modeling Framework for the Intervertebral Disc.

Minhao Zhou1, Shiyin Lim1, Grace D O'Connell1,2

  • 1Berkeley Biomechanics Laboratory, Department of Mechanical Engineering, University of California, Berkeley, Berkeley, CA, United States.

Frontiers in Bioengineering and Biotechnology
|June 24, 2021
PubMed
Summary
This summary is machine-generated.

A new structure-based model accurately predicts intervertebral disc mechanics at multiple scales. This advancement aids in understanding disc degeneration and designing better tissue-engineered spinal structures.

Keywords:
bovine caudal discfinite element modelingintervertebral disc degenerationmultiphasic modelingmultiscale modelingstructure-based modelingstructure-function relationship

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Related Experiment Videos

Last Updated: Nov 1, 2025

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An In Vitro Organ Culture Model of the Murine Intervertebral Disc
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Optical Sectioning and Visualization of the Intervertebral Disc from Embryonic Development to Degeneration
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Area of Science:

  • Biomechanics
  • Biomaterials Science
  • Tissue Engineering

Background:

  • Intervertebral disc mechanics are complex, involving multiscale and multiphasic behaviors.
  • Previous finite element models often used homogenization, neglecting fluid pressure and subtissue details.
  • Bovine caudal discs serve as relevant analogs for human disc research.

Purpose of the Study:

  • Develop and validate a structure-based finite element model for bovine caudal discs.
  • Evaluate multiscale and multiphasic disc mechanics under various conditions, including degeneration.
  • Investigate subtissue-level mechanics and load-bearing mechanisms.

Main Methods:

  • Created a structure-based model representing distinct fiber and matrix components.
  • Used experimental data for direct parameter input without calibration.
  • Validated the model across joint, tissue, and subtissue levels.

Main Results:

  • The model accurately predicted 15 out of 16 multiscale disc responses.
  • Identified the annulus fibrosus rim as a critical failure point.
  • Elucidated fluid-based load-bearing mechanisms and fiber-matrix interactions.

Conclusions:

  • The structure-based model effectively captures multiscale and multiphasic disc mechanics.
  • This framework is robust for studying disc degeneration, disease, and injury.
  • The model aids in advancing tissue engineering for spinal applications.