Inclusion Criteria:  Patients who are ≥18 years of age at the time of consent  Have planned anterior cervical (C2 to C7) spine surgery using the NuVasive ACP System in conjunction with a NuVasive interbody implant or vertebral body replacement device (VBR), or a structural bone allograft spacer, for treatment of any of the following conditions:  degenerative disc disease, as defined by neck pain of discogenic origin with degeneration of the disc confirmed by patient history and radiographic studies trauma (including fractures) tumors involving the cervical spine cervical spinal deformity (kyphosis, lordosis, or scoliosis) failed previous cervical fusion(s) (e.g., pseudoarthrosis) cervical spondylolisthesis cervical spinal stenosis Able to undergo surgery based on physical exam, medical history, and surgeon judgment Understands the conditions of enrollment and is willing to sign an informed consent form to participate in the study  Exclusion Criteria:  Procedures performed with interbody implants with integrated vertebral body screw(s) Patient is involved in active litigation relating to the spine (worker's compensation claim is allowed if it is not contested) Use of bone growth stimulators postoperatively Active smoking within 6 weeks of surgery Patient has known sensitivity to materials implanted Systemic or local infection (latent or active) or signs of local inflammation Patient has inadequate bone stock or quality, or a physical or medical condition that would prohibit beneficial surgical outcome based on surgeon judgment Pregnant, or plans to become pregnant Patient is a prisoner Patient is participating in another clinical study that would confound study data