“…20,[24][25][26][27] Other complications, including malunion, nonunion, cuff dysfunction, and osteonecrosis, have been described after both percutaneous screw or pin fixation [23][24][25]28 and intramedullary nailing. 19,23,[29][30][31][32][33][34][35][36][37][38][39][40] Conventional buttress plate fixation, using either cloverleaf, buttress or simple semitubular plates, offered the possibility of more rigid fracture fixation, 2,41-51 but fracture displacement was still prevalent as a result of screw cutout in the osteoporotic humeral head. 23 The revolution in the use of locking plate technology has now extended to the proximal humerus and site-specific locking plates have largely superseded conventional plate fixation in the last 10 years.…”