So the chances of your actually sticking with ortho after 4 years is probably about 50:50 but what ortho programs are looking for is the same thing every program is looking for regardless of the specialty. They want what you can imagine, grades, scores, research, and letters of rec. What you need to know at this point is that you really don't want to limit yourself on what you can do early by not performing well during the basic science years, and not doing well on step 1. If you do well during the first two years and really kill step 1, it makes the next two years really fun because you KNOW you can do anything you want with regard to a specialty choice. I can't imagine its very fun walking into a rotation thinking to youreself "well there's no chance I could ever do this even if I loved it."