Question

Why do a baby’s thighs have uneven sizes, but they are active in all aspects and strong? What detailed checks are needed in such a situation? The hip joint has already been checked and no obvious abnormalities were found.

Answer

The uneven size of a baby’s thighs is mainly due to different muscle development in the two legs, which can be balanced with regular training. If you notice that the baby’s legs are of different lengths, the skin texture on the buttocks and the inner side of the thighs is asymmetric, the hip joint cannot fully abduct when changing diapers, or there is a popping sound or a sensation of kicking, you should take the child to the hospital for a detailed examination to diagnose whether they have congenital hip dysplasia.