Patellofemoral arthritis, or patellofemoral arthritis, is an inflammation of the joint surface that forms between the patella and the femur. It is a chronic, progressive and irreversible disease that generally takes about 3 to 8 months to relieve symptoms and stabilize, depending on the severity and treatment. If patellofemoral arthritis is mild, it can be treated conservatively by taking non-steroidal anti-inflammatory drugs (NSAIDs), such as celecoxib and meloxicam, etc., during the acute phase, and at the same time paying attention to rest and minimizing squatting positions, the condition may take about 3 to 8 months to gradually relieve symptoms. Patellofemoral arthritis is more serious, has affected the normal life, usually need to take surgical treatment, such as arthroscopic treatment or the lateral support band release of the knee joint, etc., after surgical treatment recovery is relatively fast, usually about 3 to 6 months can stabilize the condition. Patellofemoral arthritis patients must actively cooperate with the doctor to take standardized treatment to avoid delay.