I am interested in neurosurgery, and I can tell you it depends mostly on the program........I got back my board scores, both usmle and comlex, and found out that I am borderline for both allopathic and osteopathic. Most places told me, however, that they don't have a "bottom-end" board score they use to separate applications, and that they look at the whole applicant. Really high board scores help you get an interview, but so does rotating through that hospital and doing a really good job while your there. So what I"m going to do is apply to a bunch of places, rotate at the ones I'm interested in and then cross my fingers. Another option is to go general surgery or traditional rotating intership for one year, then re-apply for neurosurgery after that!
Good luck!