Reliability of MRI assessment of supraspinatus tendinopathy

Objective: To determine the interobserver and intraobserver reliability of the interpretation of MRIs for supraspinatus tendinosis. Methods: In the interobserver trial, the MRIs of 52 athletes’ shoulders were observed by 3 observers on one occasion within a 2-month period. All 52 images were read by...

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Bibliographic Details
Published in:British journal of sports medicine 2007-08, Vol.41 (8), p.e9-e9
Main Authors: Sein, Mya Lay, Walton, Judie, Linklater, James, Harris, Craig, Dugal, Tej, Appleyard, Richard, Kirkbride, Brent, Kuah, Donald, Murrell, George A C
Format: Article
Language:English
Subjects:
Adolescent
Adult
Clinical medicine
Female
Humans
ICC
Injuries
intraclass correlation
Magnetic Resonance Imaging - methods
Male
NMR
Nuclear magnetic resonance
Observer Variation
Original
Pain
Prospective Studies
proton density
Radiology
Reliability
Reproducibility of Results
Rotator Cuff - pathology
Sensitivity and Specificity
Severity of Illness Index
Shoulder
Shoulder Pain - diagnosis
Shoulder Pain - epidemiology
Shoulder Pain - etiology
Studies
Swimming
Swimming - injuries
Tendinopathy - diagnosis
Tendinopathy - epidemiology
Tendons
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Summary:Objective: To determine the interobserver and intraobserver reliability of the interpretation of MRIs for supraspinatus tendinosis. Methods: In the interobserver trial, the MRIs of 52 athletes’ shoulders were observed by 3 observers on one occasion within a 2-month period. All 52 images were read by the most experienced musculoskeletal radiologist on 3 different occasions on separate days without access to the previous readings for the intraobserver trial. Supraspinatus tendinosis was graded using a modified 4-point scale from grades 0 to grade 3. Results: The grading of MRI-determined supraspinatus tendinosis was reliable, having an intraclass correlation (ICC) of 0.85 when assessed by the single well-trained observer. Interobserver reliability was only fair to good (ICC = 0.55). Conclusions: Supraspinatus tendinosis can be accurately identified on MRI with little variation by a single well-trained observer. Interobserver reliability was only fair to good. Our data indicated that the reliability of the assessment was much greater in more experienced radiologists than in those with less experience.
ISSN:0306-3674
1473-0480
DOI:10.1136/bjsm.2006.034421