The cost of O-shaped leg correction surgery is about 20,000~100,000 RMB, which is related to the specific condition and the materials used, so it is recommended to consult the local hospital before the surgery. O-shaped leg is also known as knee inversion deformity, congenital developmental deformity of the O-shaped leg joint surface is more stable, single leg osteotomy and fixation is usually about 20,000 yuan, acquired knee inversion deformity may need to carry out knee replacement, the cost of a single leg of about 50,000 yuan, generally speaking, imported materials are more expensive. For O-shaped leg with obvious discomfort, surgery may be needed if conservative treatment is ineffective. The specific condition should be professionally evaluated by the doctor to determine whether to choose the O-shaped leg correction surgery, and after the surgery, we should pay attention to the protection, regular review, and actively cooperate with the doctor to carry out rehabilitation training.