Glenoid lab rum: MR imaging with histologic correlation

Rebecca Loredo, Carlos Longo, David Salonen, Joseph Yu, Parviz Haghighi, Debra Trudell, Paul Clopton, Donald Resnick

Research output: Contribution to journalArticlepeer-review

60 Scopus citations

Abstract

PURPOSE: To document the histopathologic basis of altered intralabral and sublabral signal intensity on magnetic resonance (MR) images. MATERIALS AND METHODS: Ten fresh cadaveric shoulder specimens underwent transaxial MR imaging with T1-weighted, proton-densityweighted, and T2-weighted spin-echo; multiplanar gradient-recalled echo (MPGR); three-dimensional Fourier transform gradient-recalled echo (GRE); spoiled gradient-recalled echo (SPGR); and T1-weighted, fat-suppressed sequences before and after intraarticular injection of gadolinium. Shoulders were then frozen and transversely sectioned, and histologic analysis of the labrum was performed. RESULTS: Altered intralabral signal intensity correlated with fibrovascular tissue, mucoid or eosinophilic degeneration, calcification, ossification, synovial tissue, or combinations of these findings. A sublabral transitional band of intermediate signal intensity correlated with a transitional zone of fibrocartilage. CONCLUSION: There are several causes of altered intralabral signal intensity. A transitional fibrocartilaginous zone correlates with sublabral increased signal intensity. Intraarticular administration of gadolinium improves evaluation of the glenoid labrum.

Original languageEnglish (US)
Pages (from-to)33-41
Number of pages9
JournalRadiology
Volume196
Issue number1
DOIs
StatePublished - Jul 1995

Keywords

  • Cartilage, 44.449,44.4819
  • Cartilage, MR, 44.1214
  • Shoulder, MR, 414.121411, 121412, 121415, 12143
  • Shoulder, anatomy, 414.92

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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