The recovery time of the knee after distal femur fracture is related to the severity of the fracture, the patient’s own condition, and the surgery, and there is no exact time. If the patient is young, the fracture has no open wound, the patient has no underlying disease, the postoperative wound is not infected and actively cooperates with the postoperative rehabilitation training, then it can be recovered in about 2-3 months. If the patient himself is an elderly patient, and if the patient has an open fracture, comminuted fracture, postoperative wound infection, severe swelling, or if the patient suffers from an underlying disease that causes the wound not to heal easily, such as diabetes mellitus, etc., the recovery time will be longer. If the patient’s wound recovers well but does not receive professional rehabilitation training in time, the recovery time can still be relatively longer. It is recommended that the patient actively cooperate with the doctor’s treatment plan, timely rehabilitation training, pay attention to rest, and timely supplementation of nutrition, and if the recovery is delayed, it is recommended to consult a doctor for diagnosis and treatment.