I also have spondylolisthesis, after spinal fusion and roRAB, I have now severe pain in mid back and also severe sacroliliac joint pain, surgeon said if operate feels might be worse than am now have been unable to work for the past two years, unable to do minmial houshold jobs, have severe pain, any activity makes pain worse took meRAB, had hydro water made pain worse, went to chiro no help took lyrica, now might have to have simulator any one have a simulator inserted does it help?