Congrats on switching interests from EM to Ortho.
You seem to be on track to match given your decent step 1 and global health involvement. For now I'd suggest going to Ortho grand rounds when you can to show your interest. Perhaps getting involved in some of the basic science wouldn't be a bad idea either as it would give you something to talk about on the interview trail even if it is nowhere near published.
The most critical component however will be your away rotations and excelling at them to impress programs and get great letters of rec.
Regarding research, it helps a lot but it is not necessary to match (I had none).
You seem to be on track to match given your decent step 1 and global health involvement. For now I'd suggest going to Ortho grand rounds when you can to show your interest. Perhaps getting involved in some of the basic science wouldn't be a bad idea either as it would give you something to talk about on the interview trail even if it is nowhere near published.
The most critical component however will be your away rotations and excelling at them to impress programs and get great letters of rec.
Regarding research, it helps a lot but it is not necessary to match (I had none).