question: Hi, My daughters 11 month old has been walking since 91/2 months. This morning, he woke up and would not walk or put weight on his left leg. She called the pediatrician and they suggested that they take him to our childrens hospital. She is there, and said they it seems to be affecting the other leg as well. We are very frightened. He is acting fine, not crying, eating etc. What could be causing this? Thank you.