Inversion, DX9000, Traction all aimed at increasing the space between the vertebra and lowering the pressure within the disk so that they MAY absorb more spinal fluid and become re-hydrated thereby opening the space in the framin where the nerve roots exit. If the stenosis is caused by disc bulging the spinal canal and pushing on the spinal cord traction might reduce this extrusion if the disks rehydrate and add increased space between vertebra.