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CT compared with arthroscopy in quantifying glenoid bone loss.

James F Griffith1, Patrick S H Yung, Gregory E Antonio

  • 1Department of Diagnostic Radiology and Organ Imaging, The Chinese University of Hong Kong, Prince of Wales Hospital, 30-32 Ngan Shing St., Shatin, Hong Kong SAR, China.

AJR. American Journal of Roentgenology
|November 22, 2007
PubMed
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Computed tomography (CT) accurately detects glenoid bone loss after shoulder dislocation. This imaging technique shows high sensitivity and specificity, correlating well with arthroscopy for assessing severity and guiding surgical decisions.

Area of Science:

  • Orthopedic surgery
  • Radiology
  • Sports medicine

Background:

  • Anterior shoulder dislocation frequently leads to glenoid bone loss.
  • Accurate assessment of glenoid bone loss is crucial for surgical planning, particularly for bone augmentation procedures.
  • Arthroscopy is the gold standard but is invasive.

Purpose of the Study:

  • To evaluate the diagnostic accuracy of computed tomography (CT) in identifying and quantifying glenoid bone loss in patients with unilateral anterior shoulder dislocation.
  • To compare CT findings with arthroscopic assessment.

Main Methods:

  • Fifty patients with anterior shoulder dislocation underwent CT scans prior to arthroscopy.
  • Patient demographics and dislocation history (single vs. recurrent) were recorded.

Related Experiment Videos

  • CT findings were compared against arthroscopic results for the presence and severity of glenoid bone loss.

    • Main Results:

    • Glenoid bone loss was present in 82% of patients upon arthroscopic examination.
    • CT demonstrated high sensitivity (92.7%) and specificity (77.8%) for detecting glenoid bone loss.
    • A strong correlation (r = 0.79, p < 0.0001) was observed between CT and arthroscopy in assessing the severity of bone loss.

    Conclusions:

    • CT is a highly sensitive and specific imaging modality for detecting glenoid bone loss following anterior shoulder dislocation.
    • CT findings correlate well with arthroscopic assessments of bone loss severity.
    • CT can reliably aid in determining the need for bone augmentation surgery.