Abstract
Background: The aim of the study was to image suspected cases of rotator cuff tears by high frequency Ultrasonography (USG) and Magnetic Resonance Imaging (MRI) and to compare the two modalities to ascertain the superiority of one modality over the other. Material and Methods: This study was conducted in 35 consecutive patients over a period of 1 year, from April 2017 to May 2018. The patients were initially subjected to high frequency ultrasound followed by 1.5 T MRI. The findings were compared for tears and other secondary changes associated with rotator cuff tear. Results: High frequency USG was diagnostic in 57.0% (20/35) of the cases, whereas MRI was diagnostic in 71.0% (25/35) of the cases. 57.0% (20/35) cases showed abnormality detectable on both USG and MRI. Supraspinatous muscle tear was the most commonly implicated and most easily detectable lesion on USG (17/35); however, MRI was able to detect tears also in other rotator cuff muscles apart from supraspinatous. Effusions and other associated findings were better appreciated on MRI. Conclusions: MRI is far more superior to high frequency USG in detecting both rotator cuff tears and other associated findings with rotator cuff tears. Nevertheless, high frequency USG can be reliably used as an initial screening modality and can also be used as the only modality of investigation in absence of MR facilities.
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