Knee fracture, usually need 8-12 weeks to recover, the details are as follows: 1, short-term braking: knee fracture, usually incomplete fracture, fracture end stability is relatively good, only need to short-term braking of the knee joint, usually need to brake 4-6 weeks, 4-6 weeks later, fracture of the broken end of the fracture there will be a large number of bone scabs will be through the fracture will gradually heal. 2, functional exercise: until 8-12 weeks when the X-ray film can be found completely disappeared, the patient’s pain, swelling and other clinical symptoms will be fully relieved. X-ray film will be taken at 8-12 weeks, and the fracture will disappear completely, and the patient’s clinical symptoms such as pain and swelling will be fully relieved, and the patient can walk normally with weight bearing and resume the normal life at this time. At the same time, the patient should strengthen the exercise of leg muscles, so that the atrophy of leg muscles can be improved, and normal joint movement can be gradually restored when walking under weight. Therefore, a knee fracture will usually recover completely in 8-12 weeks, and under normal circumstances, it will not affect the patient’s life and sports in the future.