This condition is very common in joint surgery clinics, many of them are young people between 20 and 40 years old, complaining of no symptoms when walking on a flat road, but only when climbing up and down stairs or hills or squatting, this is what we usually call the cartilage surface of the patella has light or heavy wear, and the doctor may diagnose it as patellofemoral osteoarthritis (chondromalacia patellae, early osteoarthritis); this condition requires attention to lifestyle changes. Although the worn cartilage cannot be regenerated, there is no need to be overly nervous, as long as attention is paid to it, there will not be too obvious development and symptoms. When you have pain symptoms, you can take Fenbid or Meloxicam or Fotarine tablets and other non-steroidal anti-inflammatory and analgesic drugs, and you can also take long-term oral glucosamine drugs, such as imported Viguron or many domestic products, and you can go to Wal-Mart to buy Move free in the United States; you can also try intra-articular injection of sodium glacial acid to improve the symptoms. Healthy joints, good life!