This topic has been discussed several times in the past. Do a search using IMG or FMG as your topic and you should find a couple threads. On FREIDA it says that of the 3,002 residents/fellows, 1.7% are IMGs. Who knows what percentage of that 1% are actual residents, since I've heard that some programs do have foreign fellows here for a certain period of time to train, but are going back to their home countries afterwards. Anyways, ortho is tough to get into even when you're a US grad, a lot tougher when you're an IMG, but good luck.

UVA seems to have a lot of IMG residents.