Patient: Description of the condition (onset time, main symptoms, hospital visited, etc.): I discovered chondromalacia patellae in 2006, at that time, muscle exercises and manipulation reset, self-care, basically no development, walking and normal climbing stairs are not felt. However, in November 2010, I climbed a small mountain with someone, because there were no steps, it was just a slope, about 200 meters, and the next morning I felt very uncomfortable in both knees, not painful, just uncomfortable, and after a few days I did an MRI and found: a small amount of joint effusion, meniscus degeneration of degree 1, the doctor did not let treatment, just said that the acute injury period, are like this, that month did not After 3 months of atrophy of the quadriceps, both knees were tired and swollen when standing for 10 minutes, and the knee joints were in the way when walking, and they were stuck. Later, the doctor gave him 4 shots of gibberellin, took some Pulitzer capsules, and exercised the quadriceps. After practicing for a while, the symptoms improved slightly. Now walking is fine, but I can’t go up and down the stairs normally, I use my hands to support the handrail, if I go up and down normally, my knee joint will be uncomfortable immediately, and it will only be relieved after a few days, I can’t sit down and stand in a normal position, I have to use my hands to support the bench, otherwise, it will wear out the patella and it will be uncomfortable. Sometimes when I walk, I feel pain along the lower patella, and it hurts a little when I lie down, and the patella is slightly subluxed in both knees. The quadriceps have been practiced for nearly half a year, but the legs have only thickened by 1cm, which doesn’t seem to have much effect. I would like to ask how to treat my current symptoms, and how to exercise the quadriceps for the best effect. Answer: The pathological process of chondromalacia patella is: cartilage becomes soft from elastic → surface becomes rough → surface peeling, caused by the collagen fibers of patellar cartilage become less and improperly arranged, symptoms are upstairs, climbing, squatting and standing in the process of patellar pain, conservative treatment is the use of joint nutrients: sodium glass acid, intra-articular injection, both nutrition of joint cartilage, but also lubricating joints, once a week, 5 times a course of treatment; amino acid hydrochloride The treatment method is to use joint nutrients: sodium glassate, which is injected intra-articularly to nourish the joint cartilage and lubricate the joint, once a week for 5 times. The surgical method is arthroscopic trimming of the rough surface of the patellar cartilage; the lateral patellar support band is released to reduce the pressure on the patellar cartilage. As for the quadriceps muscle, there is no need to deliberately train it, and it can regain its normal thickness if it is not painful during normal life and work.