Most patients have a good prognosis after patellar dislocation surgery and will not recur, but some patients can also experience re-dislocation after surgery due to external forces. Patellar dislocation is often caused by abnormal patellar anatomy. Simple acute patellar dislocation, especially in patients with initial dislocation, is often treated conservatively. Repeated patellar dislocations and patients with osteochondral and ligamentous injuries often require surgical treatment. Surgery can significantly reduce the risk of re-dislocation of the patella, but a small number of patients are at risk of re-dislocation of the patella if they have an increased horizontal distance from the tibial tuberosity to the deepest point of the femoral trochlea, high patellas, and femoral trochlea dysplasia. If the diagnosis of patellar dislocation is confirmed, it is recommended to improve the examination, correct the risk factors of patellar dislocation under the guidance of the doctor, determine the surgical plan, and actively carry out the rehabilitation exercise after the operation, so as to reduce the rate of surgical recurrence.