Anterior cervical discectomy and fusion (ACDF) is aproven interventionfor patients with radiculopathy and myelopathy.Because of limitationsspecific to this procedure，investigators havedeveloped alternatives to fusionthat attempt to address kinematic and biomechanical issues. Twenty-five percent of patients undergoing cervical fusion will have newonset of symptoms within 10 years of that fusion. Other reports have helpedto shed light on the recurrence of neurologic symptoms and degenerativechanges adjacent to fused cervical levels. Segments adjacent to a fusion mayhave an increased range of motion and increased intradiscal pressures.