3 centimeters. According to the doctor's website, the maximum height of finger osteotomy will be reduced by 3 cm. This correction has a great influence on the bones in the future, and the brittleness of the bones will be enhanced. Aiming at the limitation/rigidity of the big toe, osteotomy correction has been proposed as closed and open wedge osteotomy, rotary osteotomy, shortening and even dorsiflexion. Osteotomy is carried out by traditional open operation and small incision, and the fixation methods include instability, suture, percutaneous kirschner wire, single thread, nail, surgical screw and steel plate.