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Related Concept Videos

Degenerative Disc Disease I: Introduction01:27

Degenerative Disc Disease I: Introduction

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Degenerative disc disease is a chronic condition in which intervertebral discs gradually lose structure and function. It is not infectious or autoimmune; rather, it results from age-related biochemical and mechanical changes, influenced by genetic, metabolic, and environmental factors.Structure and Function of DiscsThe spine contains 23 intervertebral discs that absorb load, distribute forces, maintain spacing, and allow flexibility. Each disc consists of a nucleus pulposus, a gel-like core...
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Degenerative Disc Disease ll: Pathophysiology01:23

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The symptoms of degenerative disc disease arise from a combination of mechanical compression, vascular compromise, and biochemical inflammation, which together disrupt nerve function and produce pain.Mechanical CompressionDisc degeneration reduces height and elasticity, predisposing to herniation of the nucleus pulposus, a major cause of radicular pain. Herniations may be protrusion (bulging with intact annulus), extrusion (nucleus extends beyond disc but remains connected), or sequestration...
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Herniated Intervertebral Disc l: Introduction01:29

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Intervertebral disc herniation refers to the displacement of the nucleus pulposus (the gel-like inner core of the disc) through a tear or weakened area in the annulus fibrosus (the outer fibrous ring). The displaced disc material extends beyond the normal boundaries of the disc space and may compress or irritate nearby spinal nerve roots or, less commonly, the spinal cord.Etiology and Risk FactorsHerniation commonly results from degeneration, in which aging reduces disc hydration and...
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The connective tissues have different properties and functions in the human body. They are broadly categorized into proper, supporting, or fluid connective tissues.
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Optical Sectioning and Visualization of the Intervertebral Disc from Embryonic Development to Degeneration
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A validated new histological classification for intervertebral disc degeneration.

J P H J Rutges1, R A Duit, J A Kummer

  • 1Dept. of Orthopaedics, University Medical Center Utrecht, Utrecht, The Netherlands.

Osteoarthritis and Cartilage
|October 15, 2013
PubMed
Summary

A new histological classification for intervertebral disc degeneration (IVD) was developed and validated. This reliable tool accurately assesses IVD in human tissue and is suitable for both novice and expert researchers.

Keywords:
ClassificationDegenerationHistologyIntervertebral disc

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Area of Science:

  • Spinal research
  • Histopathology
  • Degenerative disc disease

Background:

  • Histology is crucial for studying intervertebral disc degeneration (IVD).
  • Existing histological classifications for IVD lack validation and are challenging for inexperienced users.
  • A validated histological classification is needed for consistent IVD research.

Purpose of the Study:

  • To develop and validate a novel histological classification system for IVD degeneration.
  • To compare the new classification with existing, non-validated methods.
  • To establish a reliable tool for assessing IVD pathology.

Main Methods:

  • The new classification was applied to human IVD sections.
  • Scoring was performed by inexperienced and experienced observers, and a pathologist.
  • Validation involved macroscopic grading, glycosaminoglycan (GAG) content, and age correlation.

Main Results:

  • The new classification demonstrated excellent intra-observer (ICC=0.83) and good inter-observer (ICC=0.74) reliability.
  • Reliability was consistent across experienced and inexperienced observers.
  • Significant correlations were found with macroscopic scores (CC=0.79), GAG content (CC=-0.62), and age (CC=0.68), outperforming the Boos classification.

Conclusions:

  • The developed histological classification is a valid instrument for evaluating human IVD degeneration.
  • The classification is reliable and suitable for both inexperienced and experienced researchers.
  • This validated tool enhances the consistency and accuracy of IVD histological assessment.