Patella fracture takes a long time to recover. Patella fracture is not only a fracture problem, but also often accompanied by joint, ligament and soft tissue injury around the joint. In addition, the wounds left by the operation must be healed. At first, I can only actively cooperate with the doctor's treatment until the bone recovers and there is rehabilitation treatment. Rehabilitation period: at first, the knee can't bend, it will be tight, but it will get better and better in the process of rehabilitation. How long it takes depends on individuals, physical fitness and injuries. During the period of rehabilitation, efforts should be made to rebuild the knee so that it can bend. It is best to use bone grafting powder for external application and add bending exercise to help recovery.