A.B.
My daughter was looking knock kneed as well (my husband is) and when she unfortunately broke her leg awhile back the one thing I asked the orthopedic surgeon is can we correct it now and he said "No" there is nothing we can do right now and most of the time like the person above said kids often will out grow it. He also said that even if they are knock kneed he said not to worry about it because most of the time it isn't a problem. My husband was a great runner and athlete and never had any issues.
Take care~
A.