The risks of fracture implantation of allograft bone include infection, rejection, and non-union of the fracture. 1. Infection: It is one of the most common postoperative complications. As the risk of infection is high due to the implantation of allograft bone, timely and adequate anti-infection treatment is needed. 2. Rejection reaction: Since the implanted bone is foreign bone, which is quite different from your own bone quality, you are prone to rejection reaction, swelling, fever and other manifestations, which need to be treated promptly to avoid further aggravation. 3. Fracture non-healing: mainly refers to the fracture end and the implanted allograft are not fused, can not grow together normally, can not grow into a continuous bone, even in the 3~6 months after the operation is still separated from the bone, we need to carry out a comprehensive assessment, physical therapy or a second operation, the details of the doctor’s opinion shall prevail. Implantation of allograft bone for fracture has been officially approved by the state, and has been successfully used in clinical practice for many years. It is a mature and effective treatment. Although there is a risk, it is very rare. Don’t worry about using allograft bone.