I've had lumbar spinal fusion surgery, but not specifically from the condition that you have. Specifically, an L4 to S1 fusion with Gill laminectomy. I do believe that to some degree a spinal fusion is a spinal fusion. Obviously there are technical differences in the procedure. There are a lot of things to consider with this. I would make sure that you have several opinions before having this done. Also, I would make sure that you have a neurosurgeon do the surgery instead of an orthopedic surgeon. In my opinion and in the opinion of many others that I know that have had back procedures done, the Neurosurgeons seem to take a much more cautious approach and seem to have less collateral damage.
Why surgery? Is the pain unmanageable? Is there increasing disc degeneration? Is the surgery primarily cosmetic? A lot depends on why as to whether or not it makes sense. Unmanageable pain is a very good reason to have it done. The other reasons only you and your doctor can decide if they really make sense.
A lot of people have a lot of problems with spine surgeries. Somewhere around 20% of all spinal fusions patients end up with Failed Spinal Surgery Syndrome, lasting pain, increasing disability, and MORE surgeries. I've joked with friends that once they do one they might as well put a zipper in, because most of the time they will be back in there within a few years to a decade. However, this is really no laughing matter. There are tons and tons of things to consider. Many of which, I don't think the doctor's even fully get. One if you drink regularly either quit or don't have the surgery. You are undoing everything you can gain from the surgery with alcohol. If you want me to get into the specifics as to why, there are far more reasons that you would imagine. Two, if you smoke forget it. Smokers have very high rates of non-unions, where the fusion fails to take. More and more surgeons are refusing to do spinal fusions on smoker's. Are you nutritionally sound? Do you take a multivitamin, Glucosamine Chondroitin with MSM and Hyaluronic Acid? These supplements have excellent science behind them unlike most. Do you drink at least a gallon of water a day? How strong are you in terms of will, determination, persistence, pain tolerance, determination, etc?
I can tell you that this procedure is not the end of the world if you are willing to put everything you have into getting through it. However, I will also tell you that the rehabilitation procedure for recovery after the surgery are a complete joke. You may well get to the point where you will have to do some things differently then anything they have done to completely get over it. It wasn't until I fired the whole lot of them, got off all the meds and took my sorry behind back to the gym and started doing some very unconventional things to get over it that it finally got better. I was absolutely determined that this would not make me old before my time. Today I run 50 miles a week, I lift, and I lift heavy, I bike, I hike. In short I live a very active, very high intensity lifestyle, that by text book definition is 100% against all the medical restrictions. But those restrictions had only served to keep me in pain, limited in my function, miserable and unhappy. Just a few things to think about. Should you have any specific questions or if there is anything I can help with let me know. Best of luck to you.