Miyamura S, Lans J, Min KS, et al. - This study was attempted to distinguish the risk factors correlated with bone resorption of the greater tuberosity; and to evaluate the geometric and bone density characteristics associated with bone resorption using 3-dimensional computed tomography (CT) models, in complex proximal humerus fractures treated with open reduction and internal fixation (ORIF). Researchers distinguished a retrospective cohort including a total of 136 patients who had undergone ORIF of 3-part or 4-part proximal humerus fractures and 30 patients developed greater tuberosity resorption after ORIF. The results of this study demonstrate that an unreduced greater tuberosity or inadequate medial support increases the risk of greater tuberosity resorption, as were larger number of fracture fragments, smaller fragments, and lower bone density. Additionally, fibular strut grafting was found to be an independent risk factor for tuberosity resorption. Future study is required, but alternatives to strut grafting such as femoral head allograft may need serious consideration.