I would also think it would depend on whats causing the stenosis. I think that machine is bascially a form of traction (though im not positive). If you have stenosis from herniation(s), perhaps it might help. But if you have stenosis due to bony overgrowth and ligament thickening/buckling, I myself would never try that. I know for me, I couldnt even lay flat and couldnt imagine something pulling me and laying there. It was horrible enough to have MRI's (and had to keep getting up due to pain) trying to lay flat and still.