I've had the Abbott burst SNS placed about 2 years ago. I always wondered if it was still doing it's job. I recently needed a cervical spine mri and needed to turn it off. For the 45 minutes it was turned off & laying on my back (cushion under knees) and I came out in excruciating pain!! Turned it back on and it didn't immediately take care of the pain but within a few hours & a dose of pain medicine I was back to normal. I'm now in process to have one inserted in my neck for pain there and no way to repair it without completely immobilizing my upper back & neck. Hope it does the trick!!