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Reliability of a Novel Classification System for Thoracic Disc Herniations.

S Harrison Farber1, Corey T Walker1, James J Zhou1

  • 1Department of Neurosurgery, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Phoenix, AZ.

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|May 3, 2023
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Summary
This summary is machine-generated.

A new classification system for thoracic disc herniations (TDHs) demonstrates high reliability among spine surgeons. This system categorizes TDHs and shows potential for guiding surgical approach selection.

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Area of Science:

  • Spine surgery
  • Radiology
  • Orthopedics

Background:

  • Thoracic disc herniations (TDHs) are complex spinal lesions with significant variability.
  • A lack of standardized classification systems hinders consistent description and management of TDHs.
  • Existing systems do not comprehensively address the diverse characteristics of TDHs.

Purpose of the Study:

  • To assess the reliability of a novel classification system for thoracic disc herniations (TDHs).
  • To establish a standardized method for categorizing TDHs based on anatomical and clinical features.
  • To evaluate surgeon consensus on management strategies for different TDH classifications.

Main Methods:

  • A cross-sectional survey was conducted among 21 experienced US spine surgeons.
  • A proposed 5-type classification system for TDHs, including subtypes for calcification, was presented.
  • Surgeons rated illustrative cases and provided input on surgical approaches for each TDH type, with reliability assessed using Fleiss kappa coefficients.

Main Results:

  • The proposed TDH classification system achieved high overall agreement (80%) and substantial interobserver (kappa=0.604) and intraobserver (kappa=0.630) reliability.
  • Consensus was reached on nonoperative management for Type 0 TDHs (no significant effacement).
  • Surgical approach preferences varied by TDH type, with posterior approaches favored for Type 1 and anterolateral for Types 3 and 4.

Conclusions:

  • The novel TDH classification system is reliable for categorizing these spinal lesions.
  • Standardized classification can improve descriptive accuracy and potentially guide surgical decision-making.
  • Further validation of the system concerning treatment outcomes is warranted.