Wearing diapers does not affect the shape of the baby’s legs. Some parents think that wearing diapers may cause the baby’s O-shaped legs, but in fact, this argument has no scientific basis at all. This is because the baby’s legs are in a flexed position when the baby is in the mother’s womb, and wearing diapers also makes the baby’s legs appear in a flexed position. It is very dangerous to tie the baby’s legs straight, because this will not only fail to correct the baby’s leg shape, but will also lead to hip dysplasia or cause dislocation of the hip joint. The baby’s leg shape, such as O-leg, has nothing to do with diapers, but it has something to do with vitamin D deficiency or calcium deficiency. Therefore, it is safer to wear diapers. In foreign countries, diapers can be worn at night until 3 or 4 years old, and during the day until 1-2 years old, so you can wear diapers without worry.