This issue of Neurosurgery Clinics, edited by Drs.�Sigurd Berven and Praveen V. Mummaneni,�will cover Degenerative Spinal Deformity: Creating Lordosis in the Lumbar Spine. Topics will include, but are not limited to,�Spinopelvic Parameters;�Location of lordosis (priority for L4-S1) and Age Adjustments;�Approach Selection;�Nuances of Pedicle Subtraction Osteotomy;�Preventing Pseudarthrosis and PJK;�The Challenge of Creating Lordosis in High Grade Dysplastic Spondylolisthesis;�Sacropelvic Fixation;�Evolution of the MISDEF Algorithm;�Transpsoas Approach Nuances;�Lateral Prepsoas Approach Nuances;�Anterior Column Release;�Navigation assisted MIS deformity correction;�MIS TLIF;�MIS PSO; and�The challenge of L4-S1- fractional curves.