I have been to several doctors for back pain they all suggest spinal fusion went to neurologist she said i should put spacers and which one is better?

put off surgery: In general surgery is the last resort. I will hope you have tried the pain management specialist. The old surgical fusion is to fuse your spine at various levels which they feel might be causing your pain. In addition to fusion they can put in vertebral disc spaces. I would strongly suggest you obtain several opinions and perhaps speak to other patients to get their experience as well.