Rx right shoulder
Anteroposterior radiograph seven months after surgery showing medial subsidence of the cemented glenoid component and a cranial migration of the humeral head. Loose and dislocated polyethylene glenoid component. The component and its cement fixation has migrated anteriorly (arrow). The glenoid component is radiolucent and not visible on the radiograph, but cement can be seen around the three glenoid pegs, and a metallic marker embedded in the central peg can also be seen.