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European Radiology

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01.06.2013 | Musculoskeletal

Normal anatomical variants of the labrum of the hip at magnetic resonance imaging: a systematic review

verfasst von: Robert M. Kwee, Eoin C. Kavanagh, Miraude E. A. P. M. Adriaensen

Erschienen in: European Radiology | Ausgabe 6/2013

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Abstract

Objective

To review the literature regarding normal labral variants at MRI.

Methods

A systematic search was performed in PubMed/MEDLINE and Embase. For each included study, information regarding normal labral variants and findings in asymptomatic subjects was extracted.

Results

There were 24 studies in symptomatic patients, evaluating 822 hips. The presence of a sublabral sulcus was reported by four studies in 41 hips (5 % of all evaluated hips), occurring at all anatomical locations. There were 3 cadaver studies, investigating 32 hips and reporting no normal labral variants. There were 8 studies in asymptomatic subjects, evaluating 1,096 hips. Labral tears were reported in 213 hips (19 %); no sublabral sulci were reported. Labral shape was most commonly triangular (59–89 %), whereas rounded (11–16 %), flattened (13–37 %) and teardrop (41 %) shapes were less frequently seen. Overall methodological quality of included studies was moderate, with median total quality scores of 43 % (symptomatic patients), 71 % (cadavers) and 70 % (asymptomatic subjects).

Conclusion

At MRI, a sublabral sulcus can be found at any anatomical location. Our results suggest that its prevalence is at least 5 % in symptomatic patients. The most common labral shape is triangular. Rounded, flattened and teardrop shapes are less frequent but are also encountered in asymptomatic subjects.

Key Points

• A sublabral sulcus can be detected by MRI at any anatomical site

• Its prevalence is estimated to be at least 5 % in symptomatic patients

• The most common shape of the hip labrum is triangular

• Rounded, flattened and teardrop shapes are less frequent

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Titel: Normal anatomical variants of the labrum of the hip at magnetic resonance imaging: a systematic review
verfasst von: Robert M. Kwee
Eoin C. Kavanagh
Miraude E. A. P. M. Adriaensen
Publikationsdatum: 01.06.2013
Verlag: Springer-Verlag
Erschienen in: European Radiology / Ausgabe 6/2013
Print ISSN: 0938-7994
Elektronische ISSN: 1432-1084
DOI: https://doi.org/10.1007/s00330-012-2744-3

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Normal anatomical variants of the labrum of the hip at magnetic resonance imaging: a systematic review

Abstract

Objective

Methods

Results

Conclusion

Key Points

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Abstract

Objective

Methods

Results

Conclusion

Key Points

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