Is an alcohol and/or drug abuser as defined by currently undergoing treatment for alcohol and/or drug abuse.(if questionable, obtain psychiatric consult.) Documented allergy or intolerance to stainless steel, titanium, titanium alloy, polyetheretherketone (PEEK), or tantalum.Chronic or acute renal failure or prior history of renal disease.Overt or active bacterial infection, either local or systemic.Presence of active malignancy or prior history of malignancy (except for basal cell carcinoma of the skin).Has osteoporosis, osteopenia, or osteomalacia as determined by DEXA scan.Severe pathology of the facet joints of the involved vertebral bodies.Fused level adjacent to the level to be treated.Any subsequent planned/staged surgical procedure at the involved or adjacent level(s).Previous surgical intervention at the involved level.Documented or diagnosed cervical instability at the target level, defined by dynamic (flexion/extension) radiographs. ![]()
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