A fully recovered patella fracture is not much different in strength from what it was before and is not much stronger. There are two common types of patella fractures, a transverse fracture caused by indirect violence and a comminuted fracture caused by direct violence. After the fracture, both will lead to knee pain and swelling, accompanied by impaired mobility and other symptoms. Patellar fractures take 3 to 6 months to achieve initial clinical healing and about 1 to 2 years to achieve complete healing. Complete healing means that the fracture is fully recovered at the imaging and histologic levels, leaving no traces, so that there is little change in the strength of the fracture after recovery. It is important to note that rehabilitation exercises under the supervision of a physician are required early after fracture treatment. Early rehabilitation is essential to restore knee function and prevent joint stiffness.