Spine Scheduling a L5-S1 fusion tomorrow

I have finally finished all of the testing and PT required before surgery will be scheduled and have my doctor’s appointment tomorrow to schedule surgery for an L5-S1 fusion. I am in terrible pain and am hoping this surgery will provide relief. My disc is collapsed per the latest MRI. I have had many problems over the years, surgery 25 yrs ago for a herniated disc, surgery last year to relieve pressure on my nerves on the same area. I started researching disc replacement but did not find anything and my doctor already said this is not an option that he knows of in the San Diego area. I have heard this will provide relief after the healing from the surgery but wanted to see if there are any other options and anyone else’s experience with this. Bonesmart was so helpful for my knee replacements. Hoping the same for this.