Progressive Changes in Sagittal Contour After Anterior Spinal Fusion With Instrumentation of Different Sizes for Thoracic Adolescent Idiopathic Scoliosis: Is Continued Posterior Spinal Growth an Issue in Skeletally Immature Children? - Lavelle WF; D'Andrea LP; Clements DH 3rd; Betz RR (Spine deformity, 2014)