A Critical Review on Prosthetic Features Available for Reversed Total Shoulder Arthroplasty

Figure 6

(a) Traditional inlay Grammont RSA with a straight stem and a 155° inclination. (b) Example of a new design with a curved stem and an onlay humeral tray in a 135° inclination. The red line passes through the center of the stem. Note that the center of the polyethylene is more medial with the curved stem which results in lateralization of the humerus (red arrow) [62].