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Quantitative discomanometry and acute disk injuries: an experimental model

M M Panjabi1, E P Southern, T R Oxland

  • 1Department of Orthopaedics and Rehabilitation, Yale University School of Medicine, New Haven, CT 06510.

Journal of Spinal Disorders
|December 1, 1993
PubMed
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Quantitative discomanometry effectively quantifies spinal disc injuries by measuring intradiscal pressure changes. This method shows significant correlations between pressure parameters and both radiographic and anatomic injury scores, validating its use in assessing disc integrity.

Area of Science:

  • Biomedical Engineering
  • Orthopedics
  • Spinal Biomechanics

Background:

  • Intradiscal pressure changes are critical indicators of spinal disc health.
  • Quantitative discomanometry offers a method to measure these pressure dynamics.
  • Assessing the relationship between discomanometry and disc injury is crucial for understanding spinal trauma.

Purpose of the Study:

  • To investigate correlations between quantitative discomanometry parameters and spinal disc injuries.
  • To determine if intradiscal pressure measurements can objectively quantify the severity of disc damage.

Main Methods:

  • Utilized sixteen porcine spine segments with intervening discs subjected to high-speed trauma.
  • Assessed injuries using radiographic injury scores (RIS) and anatomic injury scores (AIS).

Related Experiment Videos

  • Performed quantitative discomanometry to obtain pressure/volume curves before specimen dissection.

    • Main Results:

    • Found significant negative correlations between RIS and maximum sustained pressure (R = -0.60) and pressure/volume slope (R = -0.60).
    • Observed similar strong negative correlations between AIS and maximum pressure (R = -0.71) and pressure/volume slope (R = -0.63).

    Conclusions:

    • Quantitative discomanometry parameters correlate significantly with objective measures of spinal disc injury.
    • This technique shows promise for quantifying disc injuries by mimicking physiological weight-bearing conditions.
    • Discomanometry may serve as a valuable tool for assessing the integrity of the disc's end-plate-annulus-end-plate structure.