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Skeletal Radiology
Erschienen in: Skeletal Radiology 7/2015

01.07.2015 | Scientific Article

Prevalence of the acetabular sublabral sulcus at MR arthrography in patients under 17 years of age: does it exist?

verfasst von: Olaf Magerkurth, Jon A. Jacobson, Yoav Morag, David Fessell, Asheesh Bedi, Jon K. Sekiya

Erschienen in: Skeletal Radiology | Ausgabe 7/2015

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Abstract

Purpose

To retrospectively determine characteristics of contrast-filled acetabular labral clefts in patients under the age of 17 years at MR arthrography (Mra) correlated with arthroscopy, which may impact the thinking regarding the existence of a sublabral sulcus.

Materials and methods

After IRB approval, 41 patients under the age of 17 who had MRa were identified. The following observations of contrast-filled clefts were assessed: (1) presence/absence, (2) location, (3) depth, (4) abnormal signal within the labrum and (5) shape (linear, gaping, complex). Fisher's exact and the Wilcoxon matched-pairs signed-rank test were performed. Interreader agreement was calculated with Cohen's k.

Results

Reader 1 found clefts in 41 %. Depth was less than half in 6 %, more than half in 65 % and full thickness in 29 %. Shape was linear in 53 %, gaping in 18 % and complex in 29 %. Signal changes occurred in 88 %. Reader 2 found clefts in 29 %. Depth was less than half in 17 %, more than half in 58 % and full thickness in 25 %. Shape was linear in 50 %, gaping in 42 % and complex in 17 %. Signal changes occurred in 50 %. None of the clefts fulfilled the criteria for a sublabral sulcus at MRa and arthroscopy.

Conclusion

None of the clefts found in our subjects under the age of 17 years met the MRa and arthroscopy criteria for a sublabral sulcus, which supports the theory that such clefts represent labral tears.
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Metadaten
Titel
Prevalence of the acetabular sublabral sulcus at MR arthrography in patients under 17 years of age: does it exist?
verfasst von
Olaf Magerkurth
Jon A. Jacobson
Yoav Morag
David Fessell
Asheesh Bedi
Jon K. Sekiya
Publikationsdatum
01.07.2015
Verlag
Springer Berlin Heidelberg
Erschienen in
Skeletal Radiology / Ausgabe 7/2015
Print ISSN: 0364-2348
Elektronische ISSN: 1432-2161
DOI
https://doi.org/10.1007/s00256-015-2145-1

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