I mentioned it in the sports med thread (scroll down this page a bit) since that's the primary focus of the fellowship, but Dr. Losito's 1yr fellowship in Miami has peds as a pretty big focus too. The fellowship is pretty balanced from the link (sports/peds/sx), but Losito is the only DPM on staff at Miami Children's Hospital and almost half his practice is sports and pediatric podiatry since that's what he's known for. I'd imagine you'd get quite a number of peds biomechanics, sx, etc cases as his fellow for a year.
His current fellow (Dr. VanPelt from Temple and ) just co-authored a nice long article on athletic ankle fx current treatments and classifications. It was the lead story in
Podiatry Today (I wanna say it was the Jan or Feb 07 issue, but I could be wrong... the recent one with a snowboarder on the cover). Here it is... much better and more visual in the actual mag, though:
http://www.podiatrytoday.com/article/6565