A break in the upper part of humerus bone (Proximal humerus fracture) is a common injury which can occuras a result of simple fall (in elderly patients), or an accident or sports related injury. It can present as a simple fracture involving a part of it (tuberosity fractures), or a complex fracture (four-part fracture or fracture-dislocations). Most of these injuries can be treated successfully in a simple sling and with physiotherapy.  Satisfactory function can be expected once the fracture unites. However, if the fracture is unlikely to heal, or the healing is likely to compromise function, your surgeon will offer you surgery (open reduction internal fixation or ORIF).