Radiculopathy and piriformis syndrome.

I am 37 and fell at work 1 year ago.
Sence the fall I have be told that these are just a few of what they have found to be wrong.( Piriformis syndrome, Radiculopathy, DDD) I have lost 80% of the feeling in my right side from hip to little toe. And suffer from a great deal of pain.
I have been told that there is nothing that can be done. Do you agree with this?? Is there something that can be done to help me.
They have tryed psyical therapy and it made the problem worse.
They have me on pain meds and streching exersices. NOTHING seems to help. Any information you might have that could help would be a blessing.
Thank you for you time.