Anatomy and Classification of Proximal Humerus Fractures -- Non-operative Treatment of Proximal Humerus Fractures -- Closed Reduction and Percutaneous Fixation of Proximal Humerus Fractures -- Tuberosity Fractures -- Intramedullary Locking Nail Fixation of Proximal Humerus Fractures: Rationale and Technique -- Proximal Humeral Locking Plates for Displaced Fractures of the Proximal Humeral Humerus -- Hemiarthroplasty for the Treatment of Proximal Humerus Fractures -- Reverse Shoulder Arthroplasty for Proximal Humerus Fractures -- Complications of Treatment of Proximal Humerus Fractures -- Evaluation and Management of Proximal Humerus Nonunions and Malunions.