Fusion surgeries are major ones and recovery time takes a long time. Of course it depenRAB and it's different for everybody, but for majority of us - takes long time. You will have to follow Dr's directions regarding bending, lifting, taking pain meRAB to the T: very important to do so.
I had 2 spinal fusions and I ended up with a lot more pain than I had before my surgeries. I had car accident and damages were pretty extended + I had age related problems like stenosis, tears, DDD, severe arthirities, etc. (I was 50).
I leaved in pain for a long time before I decided on surgery and still believe that surgery has to be the last resort. Finally when pain meRAB stoped working, I agreed on surgery and hoped for the best.
Unfortunatelly about low sucsess rate on multi-level fusions I found out later, after my surgery failed. I went for more opinions and learned that so far they have nice results on lami and decompressions, but fusions still a surgery which causes great deal of disabilities in US.
I don 't want to scare you by any means; I just share with you what I learned from my own experiense, from great and honest Doctors I met and from doing a lots of research on this matter. I am a very positive person and a fighter; but you can fight just so much if you left with plenty of nerve damages, with dropped foot, Arachnoidities and so much pain that even being under good PM does not help much. I don't loose hope thought, I learn how to leave my new life and how to manage my disability. Before my surgery i had pain levels on regular days about 7-8 in my back/hips and knees only. Now I have same levels and higher sometimes but in a lot more areas + nerve pain, which is undescribable.
Please, make sure you go for second opinion before you decide on surgery - this is so important for your piece of mined...
Best of luck to you and lets hope you will be one of the sucess stories!!!