Hi.

I was dx with CRPS following ACL reconstruction surgery on my left knee. I had a series of 8 lumbar blocks (every 2 weeks). The blocks didn't help much with pain and were stopped after a few months. My understanding from my PM was that they are also used as a diagnostic indicator of CRPS and that a minimum series of 3 is normal routine. If you're unsure about continuing you should bring this up during your next visit. Also, I'm not sure what kind of physio you're in right now but I wanted to share with you that pool therapy was the only thing that helped with my leg functionally.

All the best!