M6-C Artificial Cervical Disc Two-Level IDE Pivotal Study

Inclusion Criteria: * Diagnosis of degenerative cervical radiculopathy with or without spinal cord compression requiring surgical treatment at two contiguous levels from C3 to C7 demonstrated by signs and/or symptoms of disc herniation and/or osteophyte formation (e.g. neck and/or arm pain, radiculopathy, etc.) and is confirmed by patient history and radiographic studies (e.g. MRI, CT, x-rays, etc.) * Inadequate response to conservative medical care over a period of at least 6 weeks or have the presence of progressive symptoms or signs of nerve root/spinal cord compression in the face of continued non-operative management * Neck Disability Index score of ≥ 30% (raw score of ≥ 15/50) * Neck or arm pain Visual Analog Scale Score ≥ 4 on a scale of 0 to 10 * Willing and able to comply with the requirements of the protocol including follow-up requirements * Willing and able to sign a study specific informed consent * Skeletally mature and at least 18 years old but not older than 75 years old Exclusion Criteria: * More than two cervical levels requiring surgery, or two non-contiguous levels requiring surgery * Previous anterior cervical spine surgery * Axial neck pain as the solitary symptom * Previous posterior cervical spine surgery (such as a posterior element decompression) that destabilizes the cervical spine * Advanced cervical anatomical deformity (such as ankylosing spondylitis, scoliosis) at either of the operative levels or adjacent levels * Symptomatic facet arthrosis…