[Research progress on the etiology and treatment of patellofemoral pain syndrome].

Patellofemoral pain syndrome (PFPS) is one of the most common diseases that cause pain in the knee joint. At present, there is no specific diagnostic measure. The diagnosis of patellofemoral pain syndrome may be considered when imaging is performed without cartilage, ligament and soft tissue injuries. The etiology includes abnormalities of the patellar motion caused by various anatomical abnormalities, such as abnormal patellar position, increased Q angle, and excessive valgus foot. Dysfunction of the lower extremity muscles such as the imbalance of the four biceps and the dysfunction of the gluteal muscles also play an important role in the development of patellofemoral pain syndrome. At present, there are many treatments, and the exercises of four biceps exercises and hip abductor exercises are aimed at improving the dynamic stability of patella; The muscle patch and the patellar brace mainly reduce the pressure of the patellofemoral joint by improving the patellar trajectory; Foot orthopedic pads are used primarily in patients with valgus feet. After the conservative treatment is ineffective, the patellar lateral retinaculum can be loosened under arthroscopy. Because the patellofemoral pain syndrome is caused by the combined effects of various etiologies, a variety of treatments are helpful to improve the therapeutic effect.