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Pediatric Radiology
Published in: Pediatric Radiology 10/2017

Open Access 01-09-2017 | Original Article

Analysis of normal and dysplastic glenohumeral morphology at magnetic resonance imaging in children with neonatal brachial plexus palsy

Authors: Fabian van de Bunt, Michael L. Pearl, Eric K. Lee, Lauren Peng, Paul Didomenico

Published in: Pediatric Radiology | Issue 10/2017

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Abstract

Background

Glenoid version and percentage of the humeral head anterior to the scapular line are commonly used 2-D measures to assess deformity of the glenohumeral joint of children with neonatal brachial plexus palsy.

Objective

To assess whether glenoid version and percentage of the humeral head anterior to the scapular line would be altered by standardizing the measurements to the orientation of the scapula.

Materials and methods

Twenty-one bilateral magnetic resonance imaging (MRI) scans were evaluated by four reviewers. Measurements were performed on the axial image slices and again after applying 3-D reformatting.

Results

Three-dimensional reformatting led to intrapatient corrections up to 25° for version and −30% for percentage of the humeral head anterior to the scapular line. The mean difference on the involved side between clinical and anatomical version across all subjects from all reviewers was 2.2° ± 3.9° (range: −4.5° to 11.5°). The mean difference in the percentage of the humeral head anterior to the scapular line after reformatting was −1.8% (range: −15.9% to 5.2%).

Conclusion

Measurements can differ greatly for the same child depending on technical factors of image acquisition and presentation in the clinical setting. With this study, we present a clinically accessible protocol to correct for scapular orientation from MRI data of children with neonatal brachial plexus palsy.
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Metadata
Title
Analysis of normal and dysplastic glenohumeral morphology at magnetic resonance imaging in children with neonatal brachial plexus palsy
Authors
Fabian van de Bunt
Michael L. Pearl
Eric K. Lee
Lauren Peng
Paul Didomenico
Publication date
01-09-2017
Publisher
Springer Berlin Heidelberg
Published in
Pediatric Radiology / Issue 10/2017
Print ISSN: 0301-0449
Electronic ISSN: 1432-1998
DOI
https://doi.org/10.1007/s00247-017-3882-1

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