An old fracture is generally defined as a fracture that is more than 3 weeks old in adults, more than 1 week old in infants and children, and more than 2 weeks old in children. It differs from a fresh fracture in that a fresh fracture is simple to treat and can be repositioned by manipulation. The patient has more obvious signs and symptoms, a history of trauma, local swelling, pain, and functional limitations are very obvious. But old fractures are not necessarily swollen, they may be swollen, and some are less painful, they may grow into a deformity, the bone can still move, but it is crooked or screwed up. Old and fresh are in terms of time. The average adult is 3 weeks, and it is possible to have a lot of bone scabs growing in about 4 weeks. The average fracture takes 6-8 weeks to fully heal, more than half of that time is considered old. 6 weeks is counted, and a child’s fracture is 2-3 weeks to grow on. In adults it is 1-2 weeks or more for an old fracture. The difference between them is the diagnosis, or the signs and symptoms, the x-rays and even the CT are different. A fresh fracture is obvious, but an old fracture has either a bone scab or is so symptomatic that the patient is unaware of it and only occasionally notices it or goes for a radiograph for reasons such as pain, only to find out that there is an old fracture. This is especially true for rib fractures or fractures of the lumbar spine or vertebrae, which tend to occur more often. The vast majority of patients who have obvious trauma to the extremities at the time that clearly affects movement will be seen in the first instance, and very few patients will come to the doctor only after they have become old fractures.