Slow growth of bone scabs indicates slow healing of the fracture. The following factors affect fracture healing, commonly: 1. Age. For teenagers and children, fractures heal very quickly. For the elderly, the fracture heals very slowly, and often there is a slow growth of bone scabs in the elderly.2. The nutritional status of the whole body, when the body is healthy with adequate nutrition and good nutrition, the fracture can also grow quickly. If there can be a lack of nutrition or poor physical condition, often combined with other diseases, the healing of the fracture will also be slow, resulting in the slow growth of bone scabs. 3, as seen in the severity of the injury. If the local injury is very serious, resulting in serious damage to the periosteum, the local blood circulation is more severely damaged, and the growth of the bone scab will become very slow. 4. Poor fracture alignment and alignment at the time of injury will also affect the speed of scab growth. 5. Certain patients with other combined systemic diseases may also easily lead to slow growth of the bone scab, such as combined metabolic diseases and abnormal bone metabolism. 6. In terms of treatment, if the corresponding reset, fixation and surgery for strong internal fixation, the relative scab growth can be better. If the local alignment and alignment is poor, and the fixation is unstable, the local movement and activity will always result in slow growth of bone scabs.