title: Answer to the Letter to the Editor of Marco A. Marino et al. concerning "Circumferential fusion using a custom-made screw in the management of high-grade spondylolisthesis" by Jouve JL, et al. (2014) Eur Spine J; 23(Suppl. 4):S457-S462.
authors.affiliation: Service de Chirurgie Orthopédique, Hôpital Timone Enfants, 264 Rue St-Pierre, 13385, Marseille Cedex 5, France. jean-luc.jouve@ap-hm.fr.
authors.forename: J L
authors.initials: JL
authors.lastname: Jouve
authors.affiliation: Service de Chirurgie Orthopédique, Hôpital Timone Enfants, 264 Rue St-Pierre, 13385, Marseille Cedex 5, France.
authors.forename: G
authors.initials: G
authors.lastname: Bollini