After my surgery my surgeon told me that he did a plif AND Alif-but originally he told me he'd be doing a Tlif-I have a 9' incision in my back but that is all. Can a Alif be done through the back too? I am confused. Unfortunately, the surgeon is not that friendly or helpful (my surgey took 9 hours instead of 6 and he never even sent someone out to tell my family why!). He IS a top notch surgeon-so I guess that is what matters most.