Fusion of L4-L5-S1 vertebrae. The surgery in 1990 was done to "clean-up" a twice-ruptured L5-S1. that was called a discectomy. I have no disc between those two vertebrae and the two bones slide back and forth when I move/stand.
drdawg (Dr. Kenneth Ramsey)
The reason it's so hard to lose weight when you get up in age is because your body and your fat have become good friends.