- The patient qualifies for ACDF based upon physical examination and medical history. The patient has single or two adjacent levels(s) symptomatic cervical disc disease (including disc herniation and/or spondylosis) from the C3-C4 disc to the C7-T1 disc with associated radiculopathy and/or myelopathy due to nerve root and/or spinal cord compression due to herniated nucleus pulposus or osteophyte formation on the posterior vertebral endplates. Patients who are candidates for surgery based on radicular symptoms must have at least one month of conservative treatment prior to inclusion in the study.