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Compression Rotationran (Crank) Test
The Compression Rotation test is used to detect the presence of a glenoid labral tear. This test is also known as the crank test. With the patient in the seated or supine position, grasp the elbow and elevate the shoulder to 160 degrees of abduction with the elbow flexed to 90 degrees. Apply a compressive load along the humerus toward the shoulder while internally and externally rotating the arm. A clicking or catching sensation with or without pain is considered a positive test and suggests a labral tear.
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