Radiographic and Clinical Evaluation of Surgical Treatment for Cervical Deformity: A Multi-Center Study 2.0

Inclusion Criteria: * ≥18 years old at time of treatment * Diagnosis of cervical deformity- must meet one or more of the following criteria: * C2-C7 sagittal kyphosis (Cobb \> 15 degrees) * T1S-CL \> 35o * Segmental cervical kyphosis \> 10 degrees between any 2 vertebra between C2-T1 or \> 15 degrees across any 3 vertebra between C2-T1 * Cervical scoliosis \> 10 degrees (Cobb angle must include end vertebra within the cervical spine) * C2-C7 SVA \> 4cm * McGregor's slope \> 20 degrees or CBVA \> 25 degrees OR * Planned Revision surgery for proximal junctional failure with an anticipated UIV in the cervical spine and an anticipated LIV in the thoracic or lumbar spine. * Plan for surgical correction of cervical deformity in the next 6 months * Willing to provide consent and complete study forms at baseline and follow-up intervals * Upright AP/Lateral entire spine (EOS or 36") * Upright AP/Lateral C spine ONLY IF C spine is not completely visible on entire spine films * Flex/Ext lateral C spine. Admin may allow exceptions w/ valid documentation. Exclusion Criteria: * Active spine tumor or infection * Deformity due to acute trauma * Unwilling to provide consent or to complete study forms * Prisoner * Pregnant or immediate plans to get pregnant