Preoperative and postoperative sagittal plane analysis in adult idiopathic scoliosis in patients older than 40 years of age. - Sánchez-Mariscal, Felisa; Gomez-Rice, Alejandro; Rodríguez-López, Tamara; Zúñiga, Lorenzo; Pizones, Javier; Núñez-García, Ana; Izquierdo, Enrique (Spine Journal, 2017)