Clinical Research Directory

Inclusion Criteria: * Previously implanted intra-facet with one ION® Facet Screw placed per joint bilaterally at one or more contiguous levels of the cervical spine (C3-C7), or one or more contiguous levels of the lumbar spine (L3-S1), * Must have supplemental fixation at the target level(s), * Skeletally mature (minimum age of 21 years but not greater than 80 years), * Be willing and able to comply with the study protocol requirements, and * Be willing to sign the study-specific Informed Consent Document. Exclusion Criteria: * Implanted with the ION Facet Screw System at a spinal level that includes the thoracic spine (T1-T12), * Unilateral fixation with the ION Fact Screw System, * Current tobacco use * Body Mass Index of \>40, * Current active or suspected malignancy, or a cancer diagnosis that was ongoing during the patient's treatment and healing period, * Significant metabolic bone disease (diagnosis of osteoporosis or osteomalacia), * Currently taking medications that are known to potentially interfere with bone healing (e.g. chronic oral/systemic steroids), * Pregnant or nursing female, or * Incarcerated at the time of the required 12-month evaluation.