Clinics in Shoulder and Elbow
- Volume 25 Issue 3
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- Pages.182-187
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- 2022
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- 2288-8721(eISSN)
DOI QR Code
Can indirect magnetic resonance arthrography be a good alternative to magnetic resonance imaging in diagnosing glenoid labrum lesions?: a prospective study
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Mardani-Kivi, Mohsen
(Orthopaedic Research Center, Department of Orthopaedics, Poursina Hospital, School of Medicine, Guilan University of Medical Sciences) ;
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Alizadeh, Ahmad
(Department of Radiology, Poursina Hospital, Guilan University of Medical Sciences) ;
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Asadi, Kamran
(Orthopaedic Research Center, Department of Orthopaedics, Poursina Hospital, School of Medicine, Guilan University of Medical Sciences) ;
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Izadi, Amin
(Department of Orthopedics, Guilan University of Medical Sciences) ;
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Leili, Ehsan Kazemnejad
(Department of Statistics, School of Health, Guilan University of Medical Sciences) ;
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arzpeyma, Sima Fallah
(Department of Radiology, Poursina Hospital, Guilan University of Medical Sciences)
- Received : 2021.10.26
- Accepted : 2021.12.07
- Published : 2022.09.01
Abstract
Background: This study was designed to evaluate and compare the diagnostic value of magnetic resonance imaging (MRI) and indirect magnetic resonance arthrography (I-MRA) imaging with those of arthroscopy and each other. Methods: This descriptive-analytical study was conducted in 2020. All patients who tested positive for labrum lesions during that year were included in the study. The patients underwent conservative treatment for 6 weeks. In the event of no response to conservative treatment, MRI and I-MRA imaging were conducted, and the patients underwent arthroscopy to determine their ultimate diagnosis and treatment plan. Imaging results were assessed at a 1-week interval by an experienced musculoskeletal radiologist. Image interpretation results and arthroscopy were recorded in the data collection form. Results: Overall, 35 patients comprised the study. Based on the kappa coefficient, the results indicate that the results of both imaging methods are in agreement with the arthroscopic findings, but the I-MRA consensus rate is higher than that of MRI (0.612±0.157 and 0.749±0.101 vs. 0.449±0.160 and 0.603±0.113). The sensitivity, specificity, negative predictive value, positive predictive value, and accuracy of MRI in detecting labrum tears were 77.77%, 75.00%, 91.30%, 50.00%, and 77.14%, respectively, and those of I-MRA were 88.88%, 75.00%, 92.30%, 66.66%, and 85.71%. Conclusions: Here, I-MRA showed higher diagnostic value than MRI for labral tears. Therefore, it is recommended that I-MRA be used instead of MRI if there is an indication for potential labrum lesions.
Keywords
- Shoulder;
- Magnetic resonance imaging;
- Indirect magnetic resonance arthrography;
- Diagnosis;
- Glenoid labrum