Prospective Evaluation of Complex Adult Spinal Deformity (CAD) Treated With Minimally Invasive Surgery

This study is collecting data on adult patients who have complex spinal deformity (abnormal curvature or alignment of the spine) and are undergoing minimally invasive spine surgery. The goal is to understand long-term outcomes of these advanced surgical techniques and help improve care for future patients. You may be eligible if: - You are over 18 years old - You have been diagnosed with an adult spinal deformity (congenital, degenerative, idiopathic, neuromuscular, inflammatory, or iatrogenic) - You meet at least one radiographic criterion (e.g., significant pelvic incidence-lumbar lordosis mismatch, scoliosis, or sagittal imbalance) OR one surgical criterion (e.g., 3+ levels of minimally invasive fusion) - Your surgery is scheduled within 6 months You may NOT be eligible if: - Your spinal deformity is due to acute trauma - You have an active spinal tumor or infection - You are unable or unwilling to fill out questionnaires - You are pregnant - You are a prisoner - Open (non-minimally invasive) posterior spinal fusion is planned Talk to your doctor to see if this trial is right for you.