That advice is very sound & I agree.

It might help to write up a timeline to clarify the jaw operation vs a work related version of TOS..
Might even be both or one feeds of the other..
Was the jaw operation for TMJ?

How long were you an accountant?
a few years vs many many years??

After doing the timeline , sx and drs seen as best you can, it might pay to also consult w/ some work comp attys (search for good ones - same as suggested below) just in case. see what they say about it.

A second independent opinion that the surgery or the job was the start would be good, but either or both types of attys should be able to direct you best on that after you find a good one.

They probably won't be too helpful until you actually sign with them... maybe maybe not... if you sign w/them they will get a % of any monies paid to you.