I just got back from a second opinion as my NS recommended a L5-S1 PLIF. Well the second opinion doc who is an ortho believes that a one level fusion is not warranted as I have serious issues at three levels and therefore he would do a three level fusion. He also states that doing a one level fusion would only delay the inevitable because the other two levels would need to be fused later. The ortho follows this up by stating that be cause I am so young (37 y.o.) and that I have only mild weakness in my left left ( which requires me to use a cane), if he were me, he would not get surgery at this time even though it could help me. Be advised, I have already had two failed Micro-d. I just don't know what to do now and would be grateful for any input.