I just came online to answer a question about patellar dislocation. Patellar dislocation is a difficult condition to treat, yet a common and easily overlooked condition. I was reminded of a young female patient with a patellar dislocation injury in the clinic this morning. We talked a lot about whether surgery is needed and how to operate, and she had a lot of concerns because she had a surgical treatment experience to remove the free body, and that surgery left her with a heavy psychological burden. The first thing to explain is that patellar dislocation is easily missed, most commonly occurring at around 15 years of age, and is significantly more common in girls. Patellar dislocation is easily recurring, and the diagnosis and treatment of the first dislocation is particularly important. Many girls with patellar dislocation injuries are underdiagnosed, and a girl I operated on two days ago had a similar experience with the previous removal of the joint free body, and the doctor at the time did not consider the diagnosis of patellar dislocation and simply removed the free body from the joint due to patellar dislocation, without treating the patellar dislocation itself. During the arthroscopic surgery, it was found that the cartilage of the patella and femur were basically worn out, and many free bodies were removed from the joint. I also treated a patient with patellar dislocation who had been diagnosed with meniscal damage or synovitis for a long time. The first and foremost thing in the treatment of the disease is the correct diagnosis, and only after the diagnosis is clear can we target the pathological structure of the injury caused by the disease. After the diagnosis of patellar dislocation is clear, the doctor should further understand the condition of the articular cartilage injury (with emphasis on the osteochondral injury in the lower quadrant of the patella), the injury of the medial joint capsule and medial patellofemoral ligament, the development of the femoral talus, the size of the Q angle, the patellar morphology (with or without high patella, small patella, etc.), the body size, weight, and the presence of joint laxity, etc. Based on the above, the doctor should then take into account your life and sports activities and treat the disease. Based on the above situation and combined with your life and sports conditions, obvious time requirements of study and work and other social factors, we will make a personalized conservative or surgical treatment plan for you.