Had a cage put in lower back last year Now standing for 8hrs makes it so tight and painful if I bend or lean over pain. Went to doctor they want to do more MRIs Was doing good until work put me on a register with the twisting I could not finish a shift. Now a day doesn't go by without pain
Your doctors are probably concerned and wish to rule out any chance that changes from last year's surgery are behind your current pain, but pain may be resolved more simply with physical therapy, and using a chair at work.
So don't yet jump to any conclusions. Follow up and find out what's going on, then talk over a solution with your doctors.
Best wishes