I am 66. Yes, I do believe once you have surgery, you weaken the spine structure.

I have a lot going on and will need a fusion at some time. Standing is difficult as is walking. However, I can sit and sleep with little pain or interruption, so I punting for a bit longer.

Stenosis and Scoliosis mainly. I can opt for a cage for S1/L5 & L4/L5. (Surgery with two surgeons through the tummy) I believe the majority of my pain comes from this area. Probably will help with my scoliosis and will not take care of the full scoliosis. There is slippage at L3/L4 and L2/L3 (1st surgery 2015) and it possible it will become less stable with more surgery and I may end up having to have another surgery to fuse this area and another long recovery. I believe I will end up with a full fusion from S1 - T 12. Not quite at the tipping point to move ahead. That is a very brief version.:)