After a fracture, the healing growth of the bone is affected by many factors: first, the younger the patient the faster the bone grows, while the older the patient the slower the bone grows; second, if the physical fitness is very good, strong, strong and happy, the bone growth will be faster, on the contrary, if the physical fitness is very poor or suffer from diabetes, malnutrition, tumors, etc., the bone growth will be limited; third, misaligned Fourthly, if the fracture is severely crushed, the periosteum is severely damaged, and the blood circulation is damaged, the bone growth rate will be reduced; Fifthly, if there is or has been local infection, the bone growth will be slowed; Sixthly, if the fracture is repeatedly repositioned by manipulation or improper treatment such as traction treatment with excessive force, the bone growth will be slowed. Finally, fractures in special locations, such as femoral neck fractures and tibiofibular fractures, are relatively slower to grow than other parts of the bone.