A baby with one thick leg and one thin leg may generally be related to hip dysplasia, muscle development imbalance, polio and other factors.
1. Hip dysplasia: some babies may have hip dysplasia due to congenital factors, resulting in one leg thick and one thin.
2. Muscle development imbalance: babies may like to use one leg for a long time in sports, and the other one lacks exercise, causing muscle development imbalance, which may result in one leg thick and one thin.
3. Polio: babies infected with polio virus suffer from polio, may appear one leg thick and one thin.
A baby with a thick leg and a thin leg may also be caused by muscle atrophy, nerve damage, etc. It is recommended to go to the hospital for examination, to clarify the cause of the disease, and actively treat the symptoms.