I had surgery on my lumbar region and came out perfect. No fusion or disks removed but he did open up the spine to expose the spinal cord. I had spinal stenosis which is a form of bone growth that was putting pressure on the nerves causing pain, numbness and weakness in both legs.
The procedure I had is called a Laminectomy.
Prior to surgery I could barely stand up. Walking was a real chore. If I didn't have it fixed when I did the doc said I'd be in a wheelchair by now.
I was hospitalized for 24 hours and recuperated at home for four weeks.
If you are considering the procedure, do all the investigation you can. Talk with those that had it done and find out what the success rate is.
Here's a good place to start. The people here were very helpful.
Spine-Health.com
One other thing. Everyone that I talked to that had success with their procedure had it done by a Neurosurgeon not an Orthopedic. I had mine fixed by a Neurosurgeon that specialized in spine and brain surgery. Look for a good Neurosurgeon.