Treatment of Proximal Humeral Fractures Usually a sling and early range-of-motion exercises Sometimes open reduction with internal fixation (ORIF) or prosthetic joint replacement One-part fractures rarely require reduction; most (almost 80%) are treated with immobilization in a sling, sometimes with a swathe (see figure Joint immobilization as acute treatment: Some commonly used techniques), and early range-of-motion exercises, such as Codman exercises.