The cost of O-shaped leg correction surgery varies depending on the type of surgery, usually around 30,000 to 80,000 dollars. For children and adolescents with O-shaped leg due to abnormal epiphyseal development, epiphyseal plate fixation can be performed, and the cost is around 30,000 for both sides. In adults, osteotomy and orthopedic surgery can be performed on the proximal tibia or distal femur, and the cost is about 50,000 dollars. If the O-shaped leg is caused by osteoarthritis in the elderly, knee replacement surgery is needed, and the cost is around 80,000 dollars, and the price is not exactly the same depending on the manufacturer. Therefore, the cost of O-shaped leg correction is not certain, need to comprehensively determine the condition, according to the surgical method, the use of equipment manufacturers to decide.