Is there any way to know for sure whether I'll get good results from spine fusion surgery?

Unfortunately, no. There are a lot of variables before, during, and after spine surgery that influence its success. Even when the surgery succeeds in fusing the vertebrae together, some patients still don't get pain relief.

The good news is that you have numbers on your side. More patients have good results than not. Talk with your doctor about the results he or she expects from surgery, given your condition. Your doctor may be able to advise you about steps you can take before and after surgery to maximize results.