Figure 1.

A 58-year-old male with reverse shoulder arthroplasty dislocation with polyethylene liner dissociation

Findings/technique-Anteroposterior (A) and axillary lateral (B) radiographic views demonstrate dislocation with complete polyethylene liner dissociation with subluxation appearance (less than 100% displacement) compared to a full dislocation (arrow). This is only possible with the liner dissociation. Photographs of components demonstrating the positioning of the humeral stem, tray and polyethylene liner in relation to the glenosphere that corresponds with the previous radiographs (C & D).