Tom,
Sorry about your situation.
As I recall, this kind of spinal instability may be a contraindication for disc replacement (5 mm). You may find cowboys to do this, but that may be dangerous...
Pls search for the same term (or similar terms) and will find many posts on the subject. The search term is built into the navigation above.
You will see that most ADR mfrs. will disqualify you for disc replacement. There are many other types of spinal reconstruction, some even allow partial movement. Should you pursue this? Speaking for myself, I would not.
I know that hundreds of patients have done well with cervical fusion in this community. Yes, there have been complications from BMP fusions (especially cervical), but hopefully the lawyers and mfrs. have resolved these horrible complications with HO (heterotopic ossification).
Search and read topics -- going back 14 years:
- heterotopic ossification
- spinal instability
- BMP fusions or BMP
- etc.
Here's the search function:
https://www.adrsupport.org/forums/search.php