With the development of science and technology, modern diapers have the advantages of being clean, hygienic, easy to handle, safe, non-toxic, and enable caregivers to reduce a great deal of workload. The use of diapers for infants and toddlers will not have any effect on the shape of the legs, provided they are used correctly. This is because human bone development and shape molding is a principle of stress, which means that the bone gradually strengthens in the direction of force and weakens where it is not stressed. Babies do not have problems with walking, so the use of diapers has no effect. However, as the child grows and develops and can walk on the ground, try to wear a comfortable and safe diaper. If the diaper is not comfortable to wear, the child’s walking pattern will change, and over a long period of time, this can have an effect on the shape of the legs.