frequency linear transducer 6-12MHz in GE Voluson S6 Scanner, followed by Magnetic Resonance Imaging with GE Signa HDxT1.5 Tesla MRI using surface coil. Results: The most common rotator cuff tendon involved was supraspinatus. On comparison with Magnetic Resonance Imaging, sonographic detection of tendinosis had a sensitivity of 77.27% and specificity of 89.45%. Partial thickness tears showed a sensitivity of 59.68% and specificity of 99% and full thickness tears showed a sensitivity of 100% and

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... specificity of 99.63%. Also comparable accuracy amongst the two modalities was seen for evaluation of long head of biceps tendon pathologies, retraction of muscle fibers and fatty atrophy of supraspinatus muscle. Conclusion: Pretreatment evaluation of suspected rotator cuff pathologies could include Ultrasound as first line imaging modality. However, MRI should be used as a complementary modality for further assessment of cause or identifying source of symptoms in patient presenting with shoulder pain.