General Aspects of Internal Fixation -- Principles of Internal Fixation -- Intra-articular Fractures -- Open Fractures -- Fractures of the Upper Extremity -- Fractures of the Proximal Humerus -- Fractures of the Humerus (12-A, B, and C) -- Fractures of the Distal End of the Humerus (13-A, B, and C) -- Fractures of the Olecranon (12-B1) -- Fractures of the Radial Head (21-A2.2, 21-B2.1, 21-B2.2,…