I am so sorry to read of this situation affecting you. It has to be ultra hard. The doc is the only one who can really opine whether such a feat of fusing around in place SCS is workable.... or revision of fusion as you indicate. Lotta stuff, small space, gotta be careful not to disturb leads and such, YET, the same surgeon has to go in day in day out and work around life giving architecture which must not be damaged or disrupted, e.g. blood vessels, spinal cord, you know..... routine things. Seems if they can avoid harming such structures, it should be possible to avoid harming the SCS as well.

I have had both neurosurgeon and orthopedic surgeon folk in my spine and I trust both implicitly. Ask the doc how they appraise the situation and they should be able to give you a good read.

Prayin for ya