I know for myself I have had other pain areas like my back which was super painful at one time where from that I had a hard time walking and my pelvic both that lasted a long time but turned out not to be rsd. Now I have had spread to my other leg and eyes but what I am saying is that one never knows so I encourage you to follow up and ask your doctor who did the blocks. I also know for myself I compensate for my legs aka how the back happened. What doc did the ct scan? Have you had an mri? I would and if you have not been to a neuro. I hope you feel better