In the case of old fractures, if the deformity of the fracture is mild, it is usually not necessary to treat the fracture, but in the case of old fractures, the deformity is serious and affects the function of the limb, it should be treated as soon as possible. In general, surgical treatment is available for old fractures, usually three months after the injury, the fracture is healed, but the healed part is not strong enough to be considered under anesthesia. Surgical repositioning under anesthesia can be considered because the fracture end of the deformed part is re-disconnected after the injury, and repositioning can change the old fracture into a fresh fracture, which is beneficial for the recovery after the fracture. For patients with delayed healing or non-healing of old fractures, surgical treatment, such as internal fixation, can be performed. If a patient with persistent fracture is weak or has osteoporosis with calcium deficiency, some drugs to regulate bone metabolism, promote bone growth, and anti-osteoporosis treatment can be used as an adjunct to treatment, and post-fracture rehabilitation and daily care are also necessary, as well as follow-up review of the fracture is crucial. It is also important to avoid re-injury.