What is a possible radiographic sign for impingement syndrome of the shoulder?

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Subacromial spurring, also known as subacromial spur or acromial spur, is a radiographic sign of impingement syndrome of the shoulder. This occurs due to the compression of the rotator cuff tendons and subacromial bursa against the acromion and coracoacromial ligament, leading to bone formation in response to chronic stress. It can be visualized on radiographs as a bony projection or spur originating from the undersurface of the acromion.

What Is a Possible Radiographic Sign for Impingement Syndrome of the Shoulder