I've had spinal fusion of the L5-S1 6 years ago after deployment to Iraq (spondylilothesis, sorry about spelling), since then pain is increasing and prior MRI shows herniated discs, bulging discs, (L2-3, L3-4) and recent Xrays shows Anterolisthesis of L5 on S1 and mild spurring at L2-L3 and L3-L4. No frank hardware failure
or loosening is noted.