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Rotator Cuff Research Paper

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RCT is a common disease. According to general population surveys, the prevalence of rotator cuff tear is 25 % in those older than 50 years of age and 20 % in those older than 20 years of age (1). The rotator cuff is a group of 4 muscles and their tendons supraspinatus, infraspinatus, teres minor, and subscapularis (2). These muscles connect the upper-arm bone, or humerus, to the shoulder blade. The important job of the rotator cuff is to keep the shoulder joint stable. RCT can be caused by degenerative changes, repetitive micro-traumas, severe traumatic injuries, and secondary dysfunctions. Falling on an outstretched hand, unexpected force when pushing or pulling or during shoulder dislocation can cause traumatic injury to the rotator cuff. …show more content…

Dynamic scapular dyskinesis is detected by asking the patient to raise and/or abduct both arms repeatedly in a rhythmic motion, until fatigue of the scapular stabilizers results in failure to keep the scapula well positioned in relation to the thoracic wall. Active scapular retraction and elevation are checked. The next step is to look for muscle atrophy and remember active and passive range of motion should be examined and compared with the non-injured shoulder. It is easy to detect muscle atrophy of the infraspinatus viewing from the back of the patient, whereas the supraspinatus is covered by the trapezius. Atrophy of the shoulder muscles is a common finding in patients with rotator cuff tears. c- Palpation: Palpation of the cuff tendon defect is a very useful examination. Rent Test, which is placing the tip of the finger just anterior to the acromion to palpate the defect of the cuff tendon. At the same time extend patients arm and internally and externally rotates to palpate rotator cuff tendons. The sensitivity and specificity of this palpating of the cuff tendon defect for the diagnosis of full-thickness rotator cuff tears were 96 and 97%, respectively, which were equivalent to the sensitivity and specificity of magnetic resonance imaging (MRI) or ultrasonography

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