I’m not sure what a level 3 back fusion is. I’m fused from L3 - S1 with hardware and had it completely redone in 2020 after nine years. I get Radiofrequency Ablations on either side of L2 - L3 where I bend because it is all arthritic from bending for all of those other joints. I did not have any problems with the surgeries, but it took me almost four years to recover from the redo in 2020. It takes time to heal and get back to being yourself again. I hate that! lol!