“…In summary, the literature states, that clinical outcome is highly dependent on the integrity of the greater tuberosity and that loss of humeral bone stock attributes to complications, particularly loss of ER function and instability. 5 , 2 , 10 , 20 , 32 According to Boileau et al, 5 61% of fracture RTSA patients with loss of the greater tuberosity have an ER lag. In 2014, Greiner et al 20 published that the extent of the metaphyseal bone defect of the lateral cortex is significantly correlated with poor postoperative outcome.…”