The number of reverse shoulder arthroplasties (RSAs) has increased tremendously over the last twenty years, with a substantial change from Grammont design to lateralized devices, having the goal of reducing the risk of complications and improve clinical outcomes.
Radiographic criteria have been established to evaluate lateralization in RSA and to speculate on their biomechanical and functional effects.
Some biomechanical changes produced by glenoid and/or humeral lateralization are not completely understood and require additional exploratory research, investigating issues that have not previously been studied in-depth.
This manuscript aims to outline the most common radiographic features evaluating lateralized RSA based on the evidence from literature.
This paper should help the surgeon in the postoperative evaluation of lateralized reverse prosthesis and improve the surgical technique for implant positioning and fixation
Radiographic Features of Lateralized Reverse Shoulder Arthroplasty in Osteoarthritis