Clinical Research Directory

Inclusion Criteria: 1. ≥18 years old at time of treatment 2. Patient undergoing a posterior cervical instrumented fusion using the DePuy Synthes SymphonyTM OCT System for the treatment of adult cervical deformity, defined as any of below criteria: 1. Loss of cervical lordosis (≤ 0° cervical lordosis C2-7) 2. ≥ 5° of kyphosis across any 1 or 2 cervical segments 3. ≥ 10° of cervical scoliosis 4. C2-C7 SVA ≥ 4cm 5. T1 Slope minus Cervical Lordosis ≥ 20° 6. Grade I or greater Spondylolisthesis at any segment C1-T1 7. Horizontal Gaze ≤ 0 or ≥ 11 3. Plan for surgical correction of cervical deformity in the next 6 months 4. Willing to provide consent and complete study forms at baseline and follow-up intervals Exclusion Criteria: 1. Active spine tumor or infection 2. Deformity due to acute trauma 3. Unwilling to provide consent or to complete study forms 4. Prisoner 5. Pregnant or immediate plans to get pregnant