Influence of subaxial cervical spine surgery on the sagittal alignment of the cervical and global spine. A prospective observational study

Single-/double-level ACDF affect local sagittal paramethers, correct kyphosis and modulates the cervicothoracic junction, but does not influence distal spinal or pelvic alignment. Pain relief and functional improvement are comparable in kyphotic and non-kyphotic patients, irrespective of relordotization magnitude. Patients may not require aggressive lordosis correction, based on their individual sagittal profiles. Nonetheless, these results and conclusions are limited to single-/double-level ACDFs.