Joint stiffness after patella fracture can be recovered in 8 to 12 weeks after regular rehabilitation treatment. After patella fracture, no matter it is treated by conservative treatment or surgery, it may cause some degree of joint stiffness, especially the long time joint fixation by conservative treatment will leave different degree of joint stiffness, after lifting the external fixation of plaster, it should be positively carried out the rehabilitation exercise under the guidance of professional doctor, generally after regular exercise, it can be recovered in 8 weeks to 12 weeks. If the effect of rehabilitation exercise is not good, it may take longer time to recover. Therefore, after the patella fracture, you should go to the hospital for regular checkups and follow the doctor’s instructions for treatment and rehabilitation exercises, and should not do it on your own, so as not to delay the condition.