Multi-center, prospective, non-randomized study to evaluate Symphonyâ„¢ Posterior Cervical System in the setting of surgical treatment of adult cervical deformity.
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Pain Numeric rating scale (NRS) - Headaches
Timeframe: Change from Preop to 6 weeks, 6 months, and 1 & 2 year follow-up
Pain Numeric rating scale (NRS) - Neck
Timeframe: Change from Preop to 6 weeks, 6 months, and 1 & 2 year follow-up
Pain Numeric rating scale (NRS) - Upper extremity
Timeframe: Change from Preop to 6 weeks, 6 months, and 1 & 2 year follow-up
Pain Numeric rating scale (NRS) - Lower extremity
Timeframe: Change from Preop to 6 weeks, 6 months, and 1 & 2 year follow-up
Pain Numeric rating scale (NRS) - Back
Timeframe: Change from Preop to 6 weeks, 6 months, and 1 & 2 year follow-up
Neck Disability Index (NDI)
Timeframe: Change from Preop to 6 weeks, 6 months, and 1 & 2 year follow-up
Veterans RAND 12 Item Health Survey (VR-12)
Timeframe: Change from Preop to 6 weeks, 6 months, and 1 & 2 year follow-up
Patient-Reported Outcome Measurement Information System (PROMIS) - Anxiety
Timeframe: Change from Preop to 6 weeks, 6 months, and 1 & 2 year follow-up
Patient-Reported Outcome Measurement Information System (PROMIS) - Depression
Timeframe: Change from Preop to 6 weeks, 6 months, and 1 & 2 year follow-up
Patient-Reported Outcome Measurement Information System (PROMIS) - Pain Interference
Timeframe: Change from Preop to 6 weeks, 6 months, and 1 & 2 year follow-up
Patient-Reported Outcome Measurement Information System (PROMIS) - Physical Function
Timeframe: Change from Preop to 6 weeks, 6 months, and 1 & 2 year follow-up
Patient-Reported Outcome Measurement Information System (PROMIS) - Social Satisfaction (Role)
Timeframe: Change from Preop to 6 weeks, 6 months, and 1 & 2 year follow-up
Patient-Reported Outcome Measurement Information System (PROMIS) - Social Satisfaction (DSA)
Timeframe: Change from Preop to 6 weeks, 6 months, and 1 & 2 year follow-up
Spine Radiographs
Timeframe: Change from Preop to 6 weeks, 6 months, and 1 & 2 year follow-up
Modified Japanese Orthopaedic Association Scale (mJOA)
Timeframe: Change from Preop to 6 weeks, 6 months, and 1 & 2 year follow-up