I was told by many reliable sources including PDs that for most competitive ortho programs have cutoff at 220. Once in awhile, they'll consider a candidate with lower scores, but I wouldn't count on it.
Having said that I do know of people who got in with scores around 200, although it's difficult. You have to prove yourself in other areas like clinical rotations, away rotations and research publications.
Taking step II early and acing it certainly helps, but not as important as acing step I the first time around.
I posted this before. But I think the general algorithm should be:
1. If you bombed step I (around 200), take step II early and ace it.
2. If you bombed step I AND step II, ace your clinical rotations and away rotations and research.
3. If you bombed everything, take the year off do research and make some political connections early on.
There are always some exceptions, but if your score is below 200 you have a tall mountain to climb. 220 is aite, but probably have to do well in other areas. 230s is solid. 240 is probably good enough to be considered by many programs.
Also, ortho is not the only road to happiness. I think people should keep an open mind and consider other very, very respectable surgical specialties such as vascular, CT, plastics, colorectal which can be all done via general surgery route. From what I hear, general surgery is very doable these days because of such a low demand. Something to think about.
Hope this helps.