@amnorris I am a cervical spine surgery patient. You may want to research some of the artificial disc manufacturers. One that was in clinical trials when I was getting surgical opinions is the M6 disc which has more normal motion as they say. Sometimes the manufacturers websites have references for doctors who use their products. From reading clinic trials, if a patient had 4 mm of slipping of vertebrae, that was a deal breaker. My surgeon at Mayo could have done an artificial disc in my neck at C5/C6, but I chose a fusion instead. I'm not sure if he also does lumbar artificial discs. There are pros and cons to anything you chose. This is my surgeon, Jeremy Fogelson, who is a deformity specialist.
https://www.mayoclinic.org/biographies/fogelson-jeremy-l-m-d/bio-20055624