I had the pleasure of meeting Douglas Bader at a naval mess dinner, incredible personality, and he did pretty well on 2 tin legs.
Concur that Dr Perry is a top bloke, definitely worth a visit.
In Australia it is up to the CASA approved doctor to assess you fit to fly after an accident or illness, not CASA itself. In my case I was off for 4 months and had no trouble getting back to flying.
I hope you guys fly better than you drive....... those injuries sound terrible!!!!