Hardware Explantation for Symptomatic Spinal Hardware Failure

Medical Necessity Determination

• The CPB Spinal Surgery criteria recommend hardware removal for symptomatic rod, hook, or screw migration, dislodgment, or breakage, as seen in this patient with a fractured C1 screw 1
• The patient meets the CPB criteria for hardware removal, specifically criterion #5, due to symptomatic hardware failure and progressive pain 1

Clinical Rationale Supporting Medical Necessity

• CT cervical spine and plain radiographs confirm C1 screw fracture, indicating established hardware failure 1
• X-ray findings show unchanged fracture of the right pedicle screw, and thoracic imaging reveals increased lucency surrounding the right T11 screw, suggesting hardware failure 1
• The patient experiences progressive posterior neck pain, significant decrease in cervical range of motion, and tenderness to palpation over right cervical paraspinous muscles, indicating symptomatic hardware failure 1
• Functional impairment prevents the patient from working, demonstrating a significant impact on quality of life 1

Evidence Supporting Hardware Removal

• The CPB criteria state that hardware removal is medically necessary when symptomatic hardware failure occurs, without restricting the setting 1
• The patient's history of extensive prior instrumentation and complex upper cervical anatomy supports the need for inpatient hardware removal 1
• Assessment of the thoracic hardware is necessary due to radiographic concern for T11 screw loosening, which may require concurrent attention 1

Recommendation Summary

• The CPB Spinal Surgery criteria support hardware explantation as medically necessary based on documented symptomatic hardware failure (fractured C1 screw) 1
• The inpatient setting is appropriate for hardware removal given the complex upper cervical location and need for post-operative neurological monitoring 1