There is no best way to correct O-shaped leg, which is also known as inversion of the knee. For mild inversion of the knee, there is no need to correct it; for severe inversion of the knee, it is recommended to take corrective insoles, braces and surgical corrections, etc. 1. 1. Corrective insole: The outer side of O-shaped leg corrective insole is higher than the inner side, when wearing walking, it can increase the power of outward rotation of the calf, which can play the role of correcting O-shaped leg. 2. Brace correction: after the appearance of O-shaped leg, it is recommended to choose O-shaped leg brace to correct, which is a relatively simple and effective correction method, you can put your legs together when sleeping, and then use the brace to tie the O-shaped leg, but the brace needs to be used for a long time. 3. Surgical correction: O-shaped leg patients with conservative treatment is ineffective can use minimally invasive osteotomy, through a small incision on the inner side of the knee to cut a slit on the inner side of the tibia, to retain the integrity of the outer periosteum, the inner side of the leg to make the leg straight, and then finally fixed with a steel plate. This procedure generally does not damage the muscle tissue and is less damaging, less risky, and quicker to recover from. Patients who want to undergo O-shaped leg correction should follow the doctor’s instructions and actively cooperate with the doctor’s treatment, so as not to delay the condition.