Freedom® Cervical Disc Use In The Treatment of Cervical Degenerative Disc Disease

Inclusion Criteria: * Skeletally mature males or females, aged 21 to 65 years old, inclusive. * Single, or adjacent, 2-level degenerative disc disease at C3-C7, inclusive. * Subject is a surgical candidate for an anterior approach to the cervical spine. * Minimum of 6 weeks of unsuccessful conservative treatment. * Subject with at least moderate preoperative pain and functional impairment * Subject is mentally and physically able to comply with protocol, postoperative compliance instructions, and follow-up schedule through 2-years. * Subject must understand and sign the written Informed Consent form. Exclusion Criteria: * Subject with axial neck pain only who does not demonstrate concurrent arm pain or progressive neurological deterioration (specifically numbness or muscle weakness in the arm). * An active infection at the operative site or active systemic infection at the time of surgery. * Known or suspected allergy to titanium, polyurethane, cobalt, chromium, molybdenum or silicone. * Previous spinal fusion at the involved, or adjacent, cervical level(s). * Congenital or acquired structural defect at the operative levels (s) or their immediately adjacent level(s). * Significant osteoporosis in the cervical spine. * The investigator should assess if the subject has any of the following conditions at the index or adjacent level(s) which excludes the subject from study participation: * Cervical facet degeneration of the involved C3-C7 levels. * Previous trauma to, or fusion in, the C3-C7 levels. * Cervical instability at the index level(s) on neutral lateral or flexion/extension x-rays. * Radiographic findings of a fused or total collapsed disc. * Significant global cervical kyphosis (≥15º on Cobb angle measurement) or significant reversal of lordosis. * Female of childbearing potential, pregnant, breast feeding, or interested in becoming pregnant in the next two years