This video discusses the open reduction and internal fixation (ORIF) of the left humerus through a posterior approach technique. The preoperative radiographs show a displaced left humerus bone. The operative plan is to perform an open reduction followed by internal fixation of the displaced humerus bone. The standard incision is made along the midline of the triceps without causing any damage to the radial nerve. The fractured fragments are reduced and fixed using reduction clamps. Screws of appropriate length are drilled along the posterior border of the clavicle. The fractured fragment is stabilized using precontoured plates of appropriate length and fastened with screws. Multi-layer wound closure is done. Postoperative radiographs show the plate covering the entire length of the humerus.