Analysis of illness: Generally speaking, once the deformity is found, traction, splint and bracket can be used in the early stage to prevent the deformity from developing and try to correct it. In non-surgical treatment, it is suitable for patients with mild valgus knee joint and considerable range of motion, including thigh muscle massage, manual massage combined with orthopedic support, thigh muscle massage, especially medial muscles, including quadriceps femoris and sartorius muscle, and table exercise.

When determining the operation method, we must consider the age, deformity degree, local muscle ligament and other soft tissue conditions of the child. For adults, certain conditions must be considered, such as the living habits and occupations of patients. For children, it is best to perform non-surgical treatment first, and then perform surgical treatment after 5-6 years old. Budd believes that patients with ankle spacing of 7 cm are surgical indications. For patients with unstable joints, such as patients with different degrees of paralysis or osteoarthritis, joint stabilization surgery is needed.

Generally, an effective method is osteotomy to correct bone deformity, such as supracondylar osteotomy of femur. According to the experience of our hospital, lateral "V" osteotomy is better. The fishmouth formed by the femoral condyle fracture can maintain the stability of the osteotomy end, and the contact surface is large, which is beneficial to bone healing.

For patients with unstable knee joint, besides osteotomy to correct deformity, femoral tendon should also be used to strengthen or repair loose ligaments and other tissues.

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