Who is a good candidate for cervical artificial disc replacement?

Good candidates are patients with single-level cervical disc disease causing arm pain, numbness, or weakness that hasn't improved with non-surgical treatment. Ideal patients have no significant arthritis, instability, or deformity of the cervical spine. Contraindications include active infection, osteoporosis, severe facet joint disease, or allergy to implant materials. Patients with multi-level disease or prior cervical fusion may not be suitable.