There are two optimal ages for the correction of an inward curvature, one in the pediatric stage and one in the adolescent development stage. Inside-out walking is a common movement of walking that is not standardized and it needs to be corrected. In the pediatric stage, if a person walks with an inward curvature, there is also a possibility of abnormal bone development involved. Therefore, it is best to correct it when the child first learns to walk. Additionally, in adolescents, since bone development is the most rapid, correcting a figure of eight can be a good way to correct bone deformities. If you are an adult, it may be difficult to correct the deformity and may require surgery. If you are concerned about walking with an inward curvature, it is important to seek medical attention to correct it in the pediatric stage and before the bones of children and adolescents are well developed.