Just seen that you have also had the nerve block in the affected limb. I had a block in my affected leg and couldn't walk after it. All of my coordination had gone. It took me over a year to learn to walk again. Like yourself, I only read the article saying never to inject into an RSD limb after the procedure (I was only 12 at the time so didn't research RSD much then).

Something you could look into is the epidural. I had a ketamine epidural and it did decrease the pain somewhat, although it did only last a few hours. From that though my doctors determined that oral ketamine might work so I am now taking that - it only decreases the pain somewhat and is no where near as affective as the epidural.

Of course, everyone is different and what works for one person wont work for another.

I hope you find relief soon.