الفهرس 
Shoulder Joint Radiological AnatomyOnly 14 pages are availabe for public view
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Abstract
Shoulder pain is defined as chronic when it has been present for longer than six months. Common conditions that can result in chronic shoulder pain include rotator cuff disorders, adhesive capsulitis, shoulder instability, and shoulder arthritis. Rotator cuff disorders include tendinopathy, partial & complete thickness tears.
Rotator cuff tears are one of the most common causes of shoulder pain
An estimated 20 %of the population will suffer shoulder pain during their lifetime.
Imaging studies, indicated when diagnosis remains unclear or management would be altered, include plain radiographs, magnetic resonance imaging, ultrasonography, and computed tomography scans. Magnetic resonance imaging and ultrasonography are preferred for rotator cuff disorders.
Accuracy, availability, cost effectiveness and expertise are some of the important parameters that guide the process of making a decision on the best modality
US is an inexpensive, convenient, and effective tool that can be used to evaluate the shoulder. It does not expose the patient to harmful radiation and can be used to evaluate the musculoskeletal system dynamically. Additionally, US is not subject to metal artifacts when evaluating patients with previously placed hardware. Over the years, US has been found to be reliable and accurate for diagnosing rotator cuff tears, despite being operator dependent.
This study is carried out on 47 patients, based on age ≥ 18 years old. They had shoulder pain for ≥ 6 months with various degrees of movement limitations. They were referred to the Radiology department at Ain Shams University hospitals and private centre during the period from 2022 to 2023.
All patients were examined by high resolution US and conventional MRI which was used in our study as a gold standard, The US and the MRI were interpreted by two different radiologists who have long experience in musculoskeletal imaging, both were blinded to patient’s data and to the results of each other.
In our study we found that supraspinatus abnormalities (tendinopathy, tear & calcific tendinitis) and Acromioclavicular osteoarthritic changes were the most commonly observed pathologies in patients with painful shoulder.
Based on our results, there is no statistically significant difference between US & conventional MRI regarding detection of supraspinatus abnormalities (tendinopathy, partial & full thickness tear and calcific tendinitis) which is considered the common cause of shoulder pain showing high sensitivity, specificity & accuracy in comparison to MRI.
US had limited role in evaluation of non-rotator cuff related pathologies like glenohumeral joint osteoarthritic changes, subcoracoid bursal effusion and labral tears in our study.