Now of course everyone is different so you have to do what you feel is best. I do get confused why doctors keep preforming blocks when they are not working? I have seen a couple different rsd pain docs. Each seem to have there "thing" I call it that they do. One may have the blocks,another the ketamine,another the scs. I feel that if 10 different people came in they would still say the same thing regardless cause that is how they treat rsd. My best pain doctor who was not like that and really looked outside the box stressed how it is important to start less invasive and work your way up. I have had a doctor before this who before even a block or many meds he wanted to do a scs. I feel it is very important since at the start of this I saw 3 pain doctor who deal a lot with rsd and I got 3 different procedures to do that one thinks about a procedure before they do it to make sure it is right for you.
What I was told at Cleveland Clinic and now this can be wrong too but the pump is one of the last things they like to do. PT,meds,blocks are usually one of the first. A scs or ketamine could be a next step. Though for me I was going to have the scs but because my pain increased with the blocks my doctor felt the scs may too.
Sorry I don't have concrete and I really feel there is not with rsd treatment. What works for me for ex may not work for you. That is why when doctors just have their one thing they do and do that for every person with rsd I think it is wrong.