Spinal deformities in adults can have a significant impact on their quality of life. Most often it occurs as a consequence of untreated or inadequately treated adolescent idiopathic scoliosis. Patients with adult scoliosis have a different clinical and radiological picture compared to patients with adolescent idiopathic scoliosis. Differences include degenerative changes within the curve, a natural history of deformity progression, and clinical symptoms.