If this is going to be op after op after op resulting in a fusion, get it done now.
Consider an LLIF. They go in from your side LATERALLY instead of from your back (LLIF instead of TLIF). Overnight stay and zero rehab vs. 10-day stay and 6-month rehab for a standard fusion. Just had mine done at L2/L3 three months ago for stenosis. Yes, there is post-op nerve pain because they have to retract all the nerve roots to insert the device. First two weeks suck but then it gets better fast. If you can't, or won't, take nerve meds (Gabapentin, Neurontin, Lyrica, etc.) because of the horrid side effects, heating pads and Aspercreme with 4% Lidocaine help. Muscle rubs have no effect; neither do opioids...it's NERVE pain!!! Should have asked for Lidocaine patches...
Need a General Surgeon to create the 12" long "tunnel" from side to spine and then the neurosurgeon does his work. Destroy the disk, insert the "device", crank it open with an Allen wrench, backfill with bone graft from your hip, close. Picture of mine is attached (it's above my L3-S1 fusion).
Search YouTube for "globus lateral" or "LLIF" for a cute animation of the procedure. Because they have to use an Allen wrench to crank it open, I have now given my neuro the honorary Brooklyn Sicilian Wiseguy nickname of "Tommy The Wrench".
Put the whole story plus updates here...
https://patient.info/forums/discuss/the-expandable-spacer-570509
Comes in parallel (the whole thing expands uniformly) and lordotic (they can control the posterior and anterior expansions separately...like my 15 mm rear / 5 mm front expansion to maintain good curvature). Give it some thought as an option to slicing open your spine. I was walking swiftly and climbing stairs within a few hours of waking up. All stenosis gone; but then the anesthesia wears off and you get the nerve pain for a few weeks.
I've had 3 back surgeries, a new hip and a metal knee...plus four kidney stones. For me, this was FANTASTIC. Yeah, there's post op pain but after a knee replacement, this is a cakewalk. After 45 years of hockey, ya gotta pay the price sometime. This one had its moments but, for me, very doable.
Just sayin'...