My grandma actually broke her pelvis falling off of her scooter about 2 or 3 years ago. I'm pretty sure her case was not near as bad as yours, but she was about 70 when it happened. Well... While she was in the hospital and recovering she had a little motto: "Gotta fix my Pelvis, so I can dance like Elvis." :coocoo:
Anyways, today, her pelvis is healed and she CAN still dance and walk perfectly normal.
With todays medical advances, I'm sure they'll have you fixed up back to normal or as close as possible. Just definitely listen to the doctors, even if you feel like you can get up after 3 weeks, don't do it.