الفهرس 
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Abstract
Thus, in our study we found USG to be 88 % sensitive, 97% specific, had 97 % PPV, 100% sensitivity, specificity and 96 % accuracy for detection of rotator cuff tears. USG and MRI findings showed an average of 90 % agreement in diagnosis of partial and full thickness tears in our study.
Ultrasound did not prove to be quite this successful in detection of labral tears, yet MRI showed a 96 % accuracy in their detection. Even though MRI is already established to be a highly accurate imaging modality in rotator cuff pathologies, it is essential to demark the efficacy of USG in a developing country like Egypt where cost and availability are major limitations of MRI.
Hence, USG can be used as a first line of investigating a case of shoulder joint pain to rule out rotator cuff pathologies.
Ultrasound and MRI have shown almost equivalent diagnostic efficacies for evaluation of the rotator cuff with minor exceptions. Therefore, when clinical findings require rotator cuff evaluation, the choice between MRI and ultrasound is influenced by access to imaging, radiologist experience, referring physician preference, MRI contraindications, and patient choice.