Three-dimensional MRI of the glenoid labrum

S. P. Loehr, T. L. Pope, D. F. Martin, K. M. Link, J. U.V. Monu, M. Hunter, D. Reboussin

Research output: Contribution to journalArticle

11 Scopus citations

Abstract

The objective of this study was to assess the accuracy of three-dimensional (3D) magnetic resonance imaging (MRI) reformation in the evaluation of tears of the glenoid labrum complex (GLC). Fifty-five shoulders were evaluated by MRI using standard spin-echo sequences. Gradient-refocused-echo axial projections were used to assess the GLC on the two-dimensional (2D) studies. Three-dimensional Fourier transform multiplanar gradient-recalled imaging with a resolution of 0.7 mm was also performed in all patients. Independent analyses of the anterior and posterior labra were performed in a blinded manner for both the 2D and 3D studies by three experienced musculoskeletal radiologists. Observations of the imaging studies were compared with the videoarthroscopic findings. The appearance of the GLC was rated on a scale of 0 to 4 (0-2=normal, 3, 4=abnormal or torn). The diagnostic confidence was averaged from the three reader's scores. Anterior labral tears were effectively detected with sensitivities of 89% and 96% and specificities of 96% and 100% (P<0.0001) for the 2D and 3D studies, respectively. For posterior labral tears, the sensitivity and specificity of the 2D method were 47% and 98%, respectively. The sensitivity and specificity of the 3D volume sequence were 53% and 98%, respectively. The lower sensitivity of both imaging methods for detecting posterior labral tears may be influenced by the smaller number (n=5) of arthroscopically confirmed cases in our study and reflects the difficulty of viusalizing the posteroinferior borders of the GLC with present MRI techniques.

Original languageEnglish (US)
Pages (from-to)117-121
Number of pages5
JournalSkeletal Radiology
Volume24
Issue number2
DOIs
StatePublished - Feb 1 1995
Externally publishedYes

Keywords

  • Glenoid labrum
  • Magnetic resonance imaging
  • Three-dimensional volume scan

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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  • Cite this

    Loehr, S. P., Pope, T. L., Martin, D. F., Link, K. M., Monu, J. U. V., Hunter, M., & Reboussin, D. (1995). Three-dimensional MRI of the glenoid labrum. Skeletal Radiology, 24(2), 117-121. https://doi.org/10.1007/BF00198073