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Superior glenoid inclination and rotator cuff tears.
- Source :
-
Journal of shoulder and elbow surgery [J Shoulder Elbow Surg] 2018 Aug; Vol. 27 (8), pp. 1444-1450. Date of Electronic Publication: 2018 Mar 23. - Publication Year :
- 2018
-
Abstract
- Background: The objectives of this study were to determine whether glenoid inclination (1) could be measured accurately on magnetic resonance imaging (MRI) using computed tomography (CT) as a gold standard, (2) could be measured reliably on MRI, and (3) whether it differed between patients with rotator cuff tears and age-matched controls without evidence of rotator cuff tears or glenohumeral osteoarthritis.<br />Methods: In this comparative retrospective radiographic study, we measured glenoid inclination on T1 coronal MRI corrected into the plane of the scapula. We determined accuracy by comparison with CT and inter-rater reliability. We compared glenoid inclination between patients with full-thickness rotator cuff tears and patients aged >50 years without evidence of a rotator cuff tear or glenohumeral arthritis. An a priori power analysis determined adequate power to detect a 2° difference in glenoid inclination.<br />Results: (1) In a validation cohort of 37 patients with MRI and CT, the intraclass correlation coefficient was 0.877, with a mean difference of 0° (95% confidence interval, -1° to 1°). (2) For MRI inclination, the inter-rater intraclass correlation coefficient was 0.911. (3) Superior glenoid inclination was 2° higher (range, 1°-4°, Pā<ā.001) in the rotator cuff tear group of 192 patients than in the control cohort of 107 patients.<br />Conclusions: Glenoid inclination can be accurately and reliably measured on MRI. Although superior glenoid inclination is statistically greater in those with rotator cuff tears than in patients of similar age without rotator cuff tears or glenohumeral arthritis, the difference is likely below clinical significance.<br /> (Copyright © 2018 Journal of Shoulder and Elbow Surgery Board of Trustees. Published by Elsevier Inc. All rights reserved.)
Details
- Language :
- English
- ISSN :
- 1532-6500
- Volume :
- 27
- Issue :
- 8
- Database :
- MEDLINE
- Journal :
- Journal of shoulder and elbow surgery
- Publication Type :
- Academic Journal
- Accession number :
- 29576340
- Full Text :
- https://doi.org/10.1016/j.jse.2018.02.043