I'm looking at having similar surgery- disk removal and fusion. The incision would look like yours. So far physical therapy has kept me from having to have the surgery. Speedy recovery to you!
Good luck with it. I put up with this for several long years before finally submitting to the dark side. It's going to be a, "Pay Me Now, Or Pay Me Later" sort of deal. If it is a physical abnormality...it's not going to fix itself and therapy does help...but not forever. I went through therapy and it made mine much much worse. Good luck and take care of yourself.