Why hasn't your pediatrician suggested you take your child to an orthopedic doc? Pediatricians are good at kid's stuff but when there is something going on with a particular thing that "has" a specialist why not refer you?
I would call today and get that referral. If you don't already have an orthopedic doc for your family then call your insurance provider or go on their web site and make a list of orthopedic docs listed. If they have pediatric orthopedic docs that's even better. Call that office and make sure they haven't cancelled their contract with your insurance, save yourself some time, then ask them how soon your child can get an appointment with a referral dated today.
If they can get him in quickly that would be awesome! If not then hopefully there are more on your insurance list that you can call.