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Related Experiment Videos

Lumbar disc degeneration. Correlation between CT and CT/discography.

O Tervonen1, S Lähde, J Rydberg

  • 1Department of Diagnostic Radiology, Oulu University Central Hospital, Finland.

Acta Radiologica (Stockholm, Sweden : 1987)
|November 1, 1990
PubMed
Summary

Computed tomography (CT) scans reveal that even minor disc protrusions indicate significant annular disruption. Bulging discs signify intradiscal damage, warranting attention regardless of nerve entrapment.

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Area of Science:

  • Radiology
  • Orthopedics
  • Spine Surgery

Background:

  • Low back pain is a common ailment often associated with degenerative disc disease.
  • Computed tomography (CT) and discography are imaging modalities used to evaluate spinal structures.

Purpose of the Study:

  • To correlate intradiscal damage with changes in annular configuration and density using CT and CT/discography.
  • To assess the significance of disc bulging in the context of spinal degeneration.

Main Methods:

  • CT and CT/discography images of 59 discs in 30 low back pain patients were analyzed.
  • Discs were graded for protrusion and herniation on CT, and annular disruption/degeneration on CT/discography using the Dallas Discogram Description.

Main Results:

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  • Slight disc protrusions correlated with severe annular disruption.
  • Advanced protrusions were associated with severe general degeneration and annular disruption.
  • Disc herniation exclusively showed severe annular disruption.
  • Local hypodensity on CT was specific but insensitive for annular disruption.

Conclusions:

  • Bulging discs are indicative of underlying intradiscal damage.
  • Annular changes observed on CT/discography are crucial for understanding disc degeneration.
  • CT findings of disc protrusion should be considered significant even without nerve impingement.