Jen, this is Marield65, Marie, and I had 2 discs in my lumbar spine fusion about 7 years ago and it did work even though I had a few more back surgeries which were minor compared to the fusion,L4& 5, and over the years it made L3 weaker and now I need to have 3 fused to 4&5. My doctor is a great neurosurgeon and first I am going to have the spinal shots for a pinched nerve that L5 is causing. It is one thing after another with my back. If you look back on my blog you will see the whole story.
Getting back to you, one question I would ask is if your cervical fusion would cause any weakness or problems to the other discs.
You seem to be handling your problem good with going on to this site you will learn so much, I wish I knew about this site before I had anything done. I don't know if I would have done anything different but I would not have been as frightened as I was. I knew nothing about my spine and just placed myself in the Dr's hands. I wish you well and keep in touch i would like to know how you are doing. Marield65