This study looks at a new device called the M6-C™ artificial cervical disc for people with neck and arm pain due to a problem called cervical radiculopathy. This is when nerves in the neck get squeezed, causing pain. The study compares this new disc to an old surgery method called ACDF (anterior cervical discectomy and fusion). In ACDF, doctors remove the damaged disc and fuse the bones together. In the study, some patients will get the M6-C disc, while others will have ACDF.

Participants must have tried regular treatments for at least six weeks without success. The study includes 263 patients who will be checked up on at 6 weeks, 3 months, 6 months, 12 months, and 24 months to see how well they are doing.

• Study lasts for 2 years with several follow-up visits.
• Participants should be between 18-75 years old.
• Must not have more than two levels of neck problems needing surgery.