Hi Numb,

That would be Lumber sympathetic blocks as the stellate ganglion blocks affect the upper body.
Although in your case I think that you need a higher block to cover the pudendal nerve so I would be asking your doctor about the possibility of a spinal block or an epidural block.
It is a very confusing time for you, so many things to consider but it comes down eventually as to whether the problem you have that needs surgery is making your RSD/CRPS even harder to deal with.

I am sorry you are faced with this but try and stay positive
Take care
Tayla