I haven't read all of your posts but since you mention your wrists hurting too much to use crutches -
and this from one of your posts-
[Then not long after that, both my arms started on fire from the forearm down to my finger tips. It was really weird, all sorts of shocks, tingles and my wrists felt like they were going to snap backwards off when I put weight on them. There was also a horrible aching throb that went on. Over the next couple of days it seemed to be more frequent in my left arm. Then my right arm would hurt more than my left. This is really all within a matter of days of each other.]
I wonder if you might also has Thoracic outlet syndrome?

what kind of work did you do- repetitive , heavy lifting, overhead?
Unfortunately TOS is as confusing to Drs as RSD is.
Doesn't usually show up on MRI, NCV/EMG or Xrays either.

I'll post the useful sticky from the TOS forum so you can read some of the info there to see if anything fits.
We have some Gals from Canada going thru W/C & some have TOS & RSD.
http://neurotalk.psychcentral.com/showthread.php?t=84