Comminuted fracture of proximal humerus with limited bone stock in young adults is challenging. There are various modes of fixation for proximal humerus fracture such as percutaneous Kirshner wiring, screw fixation, plating, intramedullary nail fixation and hemiarthroplasty. We reported a four-part proximal humerus fracture treated with locking compression plate and fibular strut autograft. Our purpose was to augment pull-out strength of the locking screws and increase stability of the construct.