My wife has had back damage and 2 surgeries for a single disk herniation. First surgery for the herniation. Second surgery to remove scar tissue from the first surgery. Thank God for worker's comp, or the cost would have been near $100,000 all told.
The worst of MRIs is the claustrophobia... stuffed in a tube for half an hour. Her second problem didn't show on the MRIs. Only during the surgery did the doctor discover the scar tissue was preventing the nerve move sliding freely as she moved around. It's been 3 months, and she still has numbness and pain from the nerve.
Dick