Whether the leg shape can be corrected in adulthood depends on whether the leg shape is abnormal due to functional causes or structural causes. Some patients have imbalance in the muscle strength of the leg, including the imbalance in the strength of the medial and lateral leg or the imbalance in the strength of the flexor and extensor muscles, resulting in abnormal leg shape when walking or standing, which can be corrected by exercising the muscles of the leg and balancing the strength of the muscles. If the adult leg shape is due to structural reasons, including joint deformity, bone deformity, etc., it is more difficult to correct through conservative methods, need to correct the leg deformity by way of surgical osteotomy, common O-leg deformity, X-leg deformity, also known as knee inversion deformity, knee valgus deformity, for adults with serious deformities need to be corrected by surgery.