The treatment of fractures involves three main principles: reduction, fixation, and functional exercise. First and foremost, a perfect reduction is required after a fracture. If the alignment of the fracture is not satisfactory, the fracture may require either closed or open reduction. After a successful closed reduction, if the fracture position is stable, fixation should be considered. Generally, following a successful closed reduction, a local application of a cast or splint can be done for external fixation. If the results of closed reduction are not satisfactory, surgical open reduction may be needed. In such cases, internal fixation, possibly with steel plates, steel pins, or intramedullary nails among other methods, is necessary. These first two points cover the need for reduction and effective fixation—including both external and internal fixation. After proper fixation, the fracture can gradually heal. During the healing process, active functional exercises are needed to prevent muscle atrophy and joint adhesion. To avoid disuse of the limb, muscle atrophy after removing the cast, whether it be a leg or an arm, functional exercises are imperative. Thus, the three principles of fracture treatment are reduction, fixation, and functional exercise, requiring professional care by medical experts in accredited hospitals.