I have learned, since having a fusion, for ME it was rough, I was severely hurt prior to having to have one. It is a last resort. It is a LONG recovery. IF you are deteriorating NOW, in your daily functions, activities and find yourself in bed more to relieve yourself from pain, than anything else, yes its a consideration to make. BUT if you can enjoy your life, right now-dont do it. if you are riddled with pain, that no pain medication can touch, and you are MISERABLE, then yes, do the fusion now. Back surgery is left as a last resort, when all else fails, and your body starts to fail. If you can stay atop of the pain, or change what you do (to an extent) in a given day, to still ENJOY your life, do not do it now. It truly is a last resort, and once you see things starting to go down hill pain and body wise, THEN you do it. And you catch it and do it the second you are lying in bed all day every day in misery and do it within a VERY short time frame.
Sadly when we are dying in pain, stuck in bed, our bodies deteriorate QUICKLY doesn't take long for muscles to atrophy, and the worse shape you get in due to being limited with your bad, the HARDER recovery you will have. BELIEVE ME I know, I was bedridden for 9 months, one back surgery failed (was a microdiscectomy for 2 badly herniated discs one of which exploded into my spinal canal and I could not feel nor move my entire leg) I got hurt real bad, and my life went down the tubes from there with extreme pain. THEN the next surgery was a fusion, and its a ROUGH and big surgery, that takes a LONGGG TIME to recover from.
If you are holding your own now, I would hold off on doing a fusion, soly due to the fact, right NOW you may be able to enjoy your life, to a fairly good extent, and why ruin that NOW with a severe surgery, that could take you upto a year to recover from (if not more), as well as a potential for nerve problems and scar tissue down the line to possibly contend with? Don't ruin a good thing (depending on your lifestyle now due to your back), believe me, when its time to definitly do a fusion, you will not haveto ask, you will KNOW cuz you won't be able to take the pain anymore and you will want your legs and life back.
Just my 2 cents. I just know it truly hasto be a last resort, because anything less than that, instead of being greatful to have 'some' mobility back, or to put up with nerve pains if the case may be you will regret deciding to do it when you did, after a fusion you will be happy and greatful for the things you CAN do again after fusion surgery, that you thought were taken away from you due to your back for what you thought was forever.
When you see you are losing the things that you love to do AND the things you don't love to do (housework, laundry, sitting to pay bills), ( and hay I KNOW I can't go bowling anymore so be realistic w things lol divy what you WILL be able/allowed to do after fusion too), and you are getting upset, and frustrated, and in pain the MAJORITY of the time, and REAL PAIN, not the wussy stuff we love to complain about cuz things aren't 'perfect' either. GET A FUSION.