It actually would depend on the severity of degeneration and the type of disc prolapse. While for a few types removal/ replacement may be required; the same may nor show improved prognosis in a few other types.
Hope this information is helpful.
You could'nt see the disc in the MRI at all, and there was mild whiting between L4/L5. They only fused the transverse processes. Does anyone treat hyper degenerated disc disease without taking out the disc and fusing the vertebral bodies? I was a roofer for 20yrs and played drums in a band for 20 years as well. They said the disc was hard, almost like bone. Now the vertabrea are full of bone spurs and cupping over one another. And the CT scan looks like an hour glass closest to the back, and it feels like they're crunching together.
I also noticed they fused the the transverse processes with the left side of L/4 L/5 on top of each other. There is barely any space between those verteblal bodies.