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Discography causes end plate deflection

M H Heggeness1, B J Doherty

  • 1Center for Spinal Disorders, Baylor College of Medicine, Houston, Texas.

Spine
|June 15, 1993
PubMed
Summary
This summary is machine-generated.

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Clinical discography in nondegenerated thoracolumbar spine segments revealed significant end plate deformation and disc bulging. These findings suggest that the end plate may be a source of pain during diagnostic discography procedures.

Area of Science:

  • Orthopedics
  • Radiology
  • Spine Biomechanics

Background:

  • Clinical discography is used to diagnose low back pain.
  • The intervertebral disc and end plates are potential pain generators.

Purpose of the Study:

  • To investigate the in vitro biomechanical changes in nondegenerated thoracolumbar spine segments during discography.

Main Methods:

  • Biplane radiography was used to study cadaveric thoracolumbar spine segments.
  • Radiographic contrast agent was injected intradiscally to perform in vitro discograms.

Main Results:

  • Significant end plate deformation was observed, averaging 0.3 mm.
  • Intervertebral disc bulging averaged 0.5 mm.
  • These changes occurred in radiographically nondegenerated discs.

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Conclusions:

  • The end plate or intraosseous events may be pain sources during clinical discography.
  • Findings suggest a potential mechanism for pain provocation during diagnostic procedures.