On the second day after knee surgery, you can do active flexion and extension functional exercises of the toes as well as the ankle, as well as quadriceps isometric contraction exercises, three to four times a day, ten or more times each time. Forty-eight hours after surgery, ice packs can be applied to the affected area to promote the reduction of swelling. After forty-eight hours, physical therapy such as infrared light can be taken to improve local blood circulation and promote the absorption of hematoma, which can effectively relieve the symptoms of swelling and pain during functional exercise. In the second week after surgery, the symptoms of swelling and pain of the incision will be significantly reduced, and under the premise of stable internal fixation, you can do active flexion and extension functional exercises of the knee joint in bed, and also use the CPM functional exercise machine to assist functional exercises. If the fracture line is blurred and there is bone scab formation, you can walk semi-weight-bearing on crutches and do squatting exercises to restore the mobility of the knee. If the fracture is completely healed, you can take off the crutches and walk with full weight. During the rehabilitation process, it is important to proceed gradually, avoiding the use of violence, and preferably under the guidance of a professional rehabilitation physician.