With scores as high as you have, it may be possible--I did meet one FMG on the interview trail last year at Seaton Hall NJ (who has taken FMG's in years past). Also I've heard of some FMG's getting into Ortho from research or other specialties, so I suppose it can happen. If you are going to try, make sure to apply broadly and also do some away rotations. I felt that both these strategies helped my application a lot (although I am a US grad...but your scores are quite a bit higher than mine). Just for general numbers most US grads that go into ortho do a couple of Sub-I rotations (I did 4), a bit of research in ortho, have higher than average scores (but often lower than yours), interview well, and apply broadly (probably 40 or more programs...since my scores were just OK I applied to 90). Also, it may get expensive quickly, but you will want to take as many interviews as are offered to increase chances of a match (I interviewed 13).
For Internal Medicine you should have little problem matching, especially if you apply to enough programs. 260 would be quite impressive for IM--so I imagine if you decide on this track interviewing well is probably the main concern.