The NRMP data book lists the states with DOs in ortho residencies. From memory, it seems like they were primarily in the DO heavy states, eg MI, PA, etc.
The ortho res dir @SUNY-Brooklyn is a DO. Though from my observations, a DO DME in an ACGME program is often LESS likely to accept a DO.
Think of the least likely place that you would like to live and then apply there. Chances are that no one else wants to go there either. Consider Buffalo, Detroit, Newark, etc. Generally speaking, they would rather have a DO than another grad from India or Pakistan.
Personally, I don't know why so many people have a hard on for orthopaedic surgery...must be the big tools.