Ideal sagittal profile restoration and ideal lumbar apex positioning play an important role in postoperative mechanical complications after a lumbar PSO

the ESSG (European Spine Study Group), Javier Pizones, Francisco Javier Sánchez Pérez-Grueso, Lucía Moreno-Manzanaro, Alba Vila-Casademunt, Louis Boissière, Çağlar Yılgör, Nicomedes Fernández-Baíllo, José Miguel Sánchez-Márquez, Gloria Talavera, Frank Kleinstück, Emre Acaroğlu, Ahmet Alanay, Ferrán Pellisé, Ibrahim Obeid