Bow legs

My son is18 months old and started walking. But his legs has a bend. First I thought that it is normal. But my brother who is a medical student informed me that it could be bow legs. I am worried. He recommended a pediatric chiropractor in Oakville ( http://www.oakvillechiropractic.com/services/chiropractic/children-chiropractic/ ). But will this treatment be effective for bow legs? Or should I take my child elsewhere? Please suggest.