Mary,
I have both a PNS and a SCS and had 3 revision surgeries on the SCS. I am not sure what you are saying in your post,... but just wanted to say that in my case.. both of my stims stoped working bc my nerves rerouted around the leads in both my back and my leg (PNS thats on the sciatic nerve) and made the stims worthless. I still have them but dont turn them on because they dont go to where i need the coverage, which is the foot and ankle and toes. I have seen my medtronics rep several times and he was even in the OR with me during the revisions and he was unable to adjust it bc of the nerves rerouting around them!!
I agreee that most probs can be solved by seeing the reps but just so its out there that revisions might be needed, either to get try and get it to work after the rerouting of the new nerves or by bending or lifting something that we shoulndnt have lifted or bent to get and pulled the leads away.!!

Amber