With the multiple injuries you that have, I think someone, or a team that will look at the whole picture is what is needed.

I don't know how you feel about chiropractic.?.. expert only of course, but it does sound like things probably did get quite a hit and part of the problem could be misalignments.. even the c1, c2 = upper cervical.
see www.upcspine.com for info on that.

most Drs seem to have a bias or totally ignore that sometimes chiropractic can help, esp if/when surgery or meds aren't doing the job.

Or advanced PT can do a comprehensive eval for you, some even study adjusting the spine or can use other types of bodywork/pressures to adjust.

You'll have to do some searching and calling to locate the really talented experts.