A Word of Caution: Success May Be Limited to 2 Years and Highly Displaced OTA/AO B2 and C2 Injuries: Commentary on an article by Alexander Nilsskog Fraser, MD, et al.: "Reverse Total Shoulder Arthroplasty Is Superior to Plate Fixation at 2 Years for Displaced Proximal Humeral Fractures in the Elderly. A Multicenter Randomized Controlled Trial".