Hi without going into the detail of my own back pain history, I have have had two major operations in the last three years. The first was a spinal fusion at S1, and had a Wallace Ligament attached to L5/L4, and L4/L3. A year post op the pain returned

, most likely from the worn discs at L5/L4 and L4/L3.
I therefore had a two level disc replacement at the levels mentioned above, one year post second op, the pain returned again

.
Do you see a pattern emerging here .
I can't comment on your case, but the point I am making is that just beware that surgery does not always work. Having said that I think I am still slightly better off for now, who knows what the future holds, having had surgery.
Good Luck whatever you decide.