Magnetic resonance imaging evaluation of meniscoid superior labrum: normal variant or superior labral tear.

Journal Article (Journal Article)

OBJECTIVE: The objective of this study was to determine the incidence of a "meniscoid" superior labrum. MATERIALS AND METHODS: This was a retrospective analysis of 582 magnetic resonance imaging examinations of shoulders. Of those 582 examinations, 110 were excluded, for a variety of reasons, and the final analysis therefore included 472 cases. Consensus readings were performed by three musculoskeletal radiologists using specific criteria to diagnose meniscoid labra. RESULTS: A meniscoid superior labrum was identified in 48 (10.2%) of the 472 cases evaluated. Arthroscopic proof was available in 21 cases (43.8%). In 10 (47.6%) of those 21 cases, the operative report did not include the mention a superior labral tear, thus suggesting the presence of a meniscoid labrum. In only one of those cases were there specific comments about a mobile superior labrum (i.e., meniscoid labrum). In the remaining 11 (52.4%), surgical correlation demonstrated superior labral tears. CONCLUSION: A meniscoid superior labrum is not an infrequent finding. Depending upon assumptions and the requirement of surgical proof, the prevalence of a meniscoid superior labrum in this study was between 2.1% (surgically proven) and 4.8% (projected). However, superior labral tears are just as common and are often confused with meniscoid labra.

Full Text

Duke Authors

Cited Authors

  • Simão, MN; Vinson, EN; Spritzer, CE

Published Date

  • July 2016

Published In

Volume / Issue

  • 49 / 4

Start / End Page

  • 220 - 224

PubMed ID

  • 27777474

Pubmed Central ID

  • PMC5073387

International Standard Serial Number (ISSN)

  • 0100-3984

Digital Object Identifier (DOI)

  • 10.1590/0100-3984.2015.0083

Language

  • eng

Conference Location

  • Brazil