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(English captions by Andrea Matsumoto from the University of Michigan)

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Next assess the strength of the rotator cuff[br]muscles.

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The drop arm test evaluates for a supraspinatus[br]muscle tear.

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Passively adduct the shoulder to 90 degrees,[br]flex to 30 degrees, and point thumbs down.

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The test is positive if the patient is unable[br]to keep arms elevated after the examiner releases.