Research identifies shoulder motions that cause subacromial impingement

Using ultrasound speckle tracking imaging, researchers found subacromial impingement was linked with higher vertical displacement and peak strain of the coracoacromial ligament during forward flexion, horizontal abduction and internal rotation with the arm at 90° abduction.

“It is recommended that patients with impingement syndrome or a repaired rotator cuff avoid these shoulder motions,” researchers wrote.


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