This question is for those folks who have had a level 1 fusion at L5-S1 five or more years ago.
Did you experience adjacent disc degeneration or adjacent spondylosis due to the stresses placed on those vertebrae adjacent to the fused ones? Especially if you had no problems with those adjacent vertebrae prior to the fusion.
If you did have problems, what were/are they and how are you treating them? Did they require another fusion? Or disc surgery?
Att the time of the first fusion did your NS or OS mention anything about adjacent vertebrae problems 5 or 10 years down the road?