May take a few days, but AOPA is DEFINATLEY the place to go. You can also try calling them.
The PTSD and meds shouldn't be a problem at all. There was a thread on this board in the last few months about the approval for pilots to take anti depressants, but if you're not on them shouldn't be an issue.
As for the injury history, like others have said it may be a non-issue, or you may have to jump through your ass. Just make sure you have copies of ALL of your paperwork and records. AOPA is a great place to start, next would be an AME, and if all else fails, the FAA. Ultimatley, keep banging down doors until you get the answer you want... or everyone is in agreement with the wrong answer. Good luck.