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Related Experiment Videos

Normal and abnormal glenoid labrum: assessment with multiplanar gradient-echo MR imaging.

T R McCauley1, C F Pope, P Jokl

  • 1Department of Diagnostic Radiology, Yale University School of Medicine, New Haven, CT 06510.

Radiology
|April 1, 1992
PubMed
Summary

Magnetic resonance imaging (MRI) using multiplanar gradient-echo (MPGR) sequences can help identify glenoid labrum tears. Morphologic findings on MPGR images are more predictive of labral tears than intralabral signal intensity.

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Area of Science:

  • Orthopedics
  • Radiology
  • Sports Medicine

Background:

  • The glenoid labrum is crucial for shoulder joint stability.
  • Accurate diagnosis of labral tears is essential for effective treatment.

Purpose of the Study:

  • To evaluate the diagnostic utility of multiplanar gradient-echo (MPGR) sequences in magnetic resonance (MR) imaging for assessing the glenoid labrum.
  • To differentiate between normal labral appearances and findings indicative of tears.

Main Methods:

  • Retrospective analysis of MR imaging of 37 shoulders (16 healthy, 19 with surgical evaluation).
  • Utilized multiplanar gradient-echo (MPGR) sequences on a 1.5-T magnet.
  • Correlated imaging findings with surgical outcomes.

Main Results:

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  • Increased intralabral signal intensity was observed in 46% of normal shoulders, limiting its predictive value.
  • Atypical labral morphology was more common in patients with tears (8/9) than in healthy subjects (6/26).
  • Absence or separation of the labrum from the glenoid cavity was specific to patients with tears.

Conclusions:

  • Morphologic assessment on MPGR MR imaging is more reliable for diagnosing glenoid labral tears than intralabral signal intensity.
  • Specific findings like labral absence or separation strongly suggest a tear.
  • MPGR sequences are valuable for evaluating glenoid labrum integrity.