A, Standing posteroanterior radiograph of patient with idiopathic scoliosis. With posterior approach, this patient would require fusion well down into the lumbar spine. B and C, Postoperative posteroanterior and lateral radiographs after anterior instrumentation. Although some loss of fixation of proximal screw is noted, patient achieved satisfactory correction and well-balanced spine in both coronal and sagittal planes by instrumentation of only thoracic spine deformity.