This may not be particularly relevant, but all the same - my Mom is a teacher/librarian and I remember her explaining to me a while back that her school (she teaches at a public school) has a high incidence of "toe walkers" or, kids that literally walk on their tip toes as a normal method of walking. One kid walked on the tips of his toes so long he actually had to have corrective ankle surgery to correct it. Sadly, it was all for nothing because he continued to walk on his toes and ruined the entire point of the operation.
From what she says, it's not just one kid but a lot of kids. This is something I never heard of or saw for myself growing up. How, as a parent, do you let that kind of behavior continue? I mean, not only does it make you look like a fruitcake, but if there's a chance you're going to require surgery just because you aren't walking the way we were intended to walk, why wouldn't you step in and adjust the behavior for your child's on health and benefit?