Stage 1: For patients diagnosed with chondromalacia patellae, when in the early stages of the disease, they should: 1. rest 2. apply heat and physical therapy 3. change their lifestyle and exercise patterns, including avoiding stairs, walking with heavy objects, running, jumping, squatting and kneeling for long periods of time, controlling their weight, and exercising their joints appropriately according to the guidance of their physical therapist. Basketball, soccer and other strenuous sports can be avoided by swimming and cycling instead. 4, enhance the strength of the muscles around the knee joint. The second stage: the patellar cartilage has been damaged, the symptoms of anterior knee pain is also more obvious, then you need to assist the drug treatment. There are two main types of medications: 1. Oral medications, including antipyretic and analgesic drugs, non-steroidal anti-inflammatory drugs (Celebrex, Ancon, Daphne, etc.) and drugs to delay joint degeneration (glucosamine sulfate), anti-arthritic drugs (Ampicillin, diacetin), and drugs to relieve muscle spasm (tizanidine hydrochloride tablets). 2, joint injections of drugs including sodium glutamate and hormonal drugs, etc., if there is a joint effusion, you need to eliminate the effusion before injecting drugs. The specific medication should be combined with the clinical situation and guided by the doctor’s interview. The third stage: If the system is not relieved after treatment or trauma-induced patellar cartilage injury can be considered surgical treatment: 1, arthroscopic cleanup 2, osteotomy orthopedic surgery 3, patellar replacement The specific choice of which procedure depends on the specific circumstances of the individual.