Biomechanical factors as well as bone biology are important for the management of fractures. The fractured bone, the type of fracture, the mechanism of the injury, and the patient characteristics are important factors in determining the fixation method and therefore the fixation material. The metallurgical, biological and biomechanical properties of the fixation materials are important factors in fracture healing. The preoperative planning is very important in the selection of the instruments that will be used. It should be remembered that the instruments providing solid fixation are required in cases where the aim is anatomical reduction and the instruments providing angular fixation are needed in cases where indirect reduction is aimed.