Patient: Description of condition (onset, main symptoms, hospital visited, etc.): onset for six months, main symptoms: right knee pain, especially the outside of the knee joint can only sleep flat at night, don’t stay when you turn over, stiff when you get up, can’t bend the knee, massage at the knee socket a few times to get off the ground. I am 55 years old, female. I was seen at the Second Hospital of Shan Medical Science. I’ve been taking Paflum and Celebrex for 3 months, but it still doesn’t work. Patient: The examination at the hospital was basically normal, except for the osteophytes and narrowing of the knee gap, and the blood test was normal. Doctor: Your symptoms are more like a lateral meniscus injury of the knee, and the narrowing of the joint space indicates that in addition to the meniscus tear there may be damage to the articular cartilage. At the same time, meniscal injury should be treated early and aggressively. The current condition can be treated by minimally invasive arthroscopic treatment, about 7 days of hospitalization, the next day after surgery, and 3-6 weeks later you can participate in normal work.