X-shaped legs can be corrected by certain treatment methods. x-shaped legs refers to the common deformity of the lower extremities, which is also known as “external eight legs”. There are many causes of knee valgus, but in milder cases, the early stages of the disease may not produce obvious symptoms and only affect the appearance. However, in severe cases, the symptoms may vary in severity and may be followed by changes in the tension of the ligaments and joint capsule, compensatory deformity of the tibia and degenerative osteoarthritis due to changes in the line of gravity of the lower extremity, which may cause symptoms. Treatment of knee valgus includes both non-surgical and surgical orthopedics. In addition, special attention needs to be paid to the treatment of knee valgus due to specific diseases that require concurrent treatment of the primary disease. Common non-surgical treatments include manual massage, acupuncture, and orthotics. Minimally invasive treatments such as micro-needling and arthroscopy can also be used. For patients with more severe valgus deformity, total knee replacement is also available.