Kathy, I remember when you were done, but I had to go back and look at your x-rays in your first post. You had a mild S curve, but you had a decent sized spondylolisthesis (slippage) in your lower lumbar which looks quite painful....wow! I would guess that your surgeon didn't offer any alternative's for this....
I had a good spondy at mid back around T8 orT9 from a hard ski crash when I was around age 30. After a few Chiropractic adjustments and some time, it didn't show up on x-rays anymore, and was never seen again on x-ray. I have read that thoracic disc herniations usually happen from traumas. I must have really hit my ribs hard on that one. I skied on edge all the time and didn't crash much, but when I did, they were doozies and usually broke something. Either equipment or body.
Discovering your rib hump in your early 40's sure is late. (From the congenital, early onset, and idiopathic patient point of view)
Here is some material on Degenerative Scoliosis. This is a good review.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3192887/
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Kathy, I think there is a scoliosis surgical museum or Dr Moe exhibit at TCSC or somewhere in Minneapolis. Can you ask when you get there? Old scoliosis casts, Stryker frames, Metal braces, racks, screws, x-ray machinery, surgical tools, etc. That sort of thing.
I would be extremely interested in visiting...
I just discovered the Museum of Surgical Science Chicago....I didn't know this was there.
https://imss.org/plan-your-visit/#cost
https://imss.org/pain/
Glad you are doing well...
Ed