Patella fracture 40 days may just be the fracture healed well with some strength, but the strength and function are not completely back to normal. Simple patella fracture, there is no displacement or the degree of displacement is relatively mild, at least 6 weeks of cast immobilization or brace fixation is required, if 6 weeks to take X-ray to see the bone scab grows over the fracture line, there is no local pressure and pain, you can remove the cast or brace, functional exercise, through gradual practice, full recovery to about 3 months. Comminuted patella fracture, generally need surgical treatment, postoperative fixation is more solid, 1 ~ 2 days after the pain relief can be in bed after the functional exercise of the knee joint, 6 ~ 8 weeks to review the fracture healing, this time you can go down on crutches part of the weight-bearing walking, full recovery takes about 3 months. Patella fracture should be timely to the hospital, follow the doctor’s advice to choose the appropriate treatment program, and regular review, under the guidance of the doctor for exercise, not to handle and exercise, so as not to cause adverse consequences.