Patient B3. Sagittal section T2 of left shoulder. Observe acromion type II (star) with slight angulation of its periarticular edge. The acromioclavicular joint also presents another variation that may compromise the subacromial space: superior displacement or subluxation of the clavicle, with inferior superposition of the acromion. Slight hypersignal adjacent to the supraspinatus (arrow) and in the anterosuperior rotator interval and small quantity of fluid in the subacromial/subdeltoid bursa.