B. S. Lonner, Multivariate analysis of factors associated with kyphosis maintenance in adolescent idiopathic scoliosis, Spine, vol.37, issue.15, pp.1297-1302, 2012.

C. Yan, Y. Li, and Z. Yu, Prevalence and Consequences of the Proximal Junctional Kyphosis After Spinal Deformity Surgery: A Meta-Analysis, Medicine (Baltimore), vol.95, issue.20, p.3471, 2016.

Y. J. Kim, K. H. Bridwell, L. G. Lenke, J. Kim, and S. K. Cho, Proximal junctional kyphosis in adolescent idiopathic scoliosis following segmental posterior spinal instrumentation and fusion: minimum 5-year follow-up, Spine, vol.30, issue.18, pp.2045-2050, 2005.

Y. J. Kim, Proximal junctional kyphosis in adolescent idiopathic scoliosis after 3 different types of posterior segmental spinal instrumentation and fusions: incidence and risk factor analysis of 410 cases, Spine, vol.32, issue.24, pp.2731-2738, 2007.

J. M. Vital and J. Senegas, Anatomical bases of the study of the constraints to which the cervical spine is subject in the sagittal plane A study of the center of gravity of the head, Surg. Radiol. Anat, vol.8, issue.3, pp.169-173, 1986.

B. Ilharreborde, C. Vidal, W. Skalli, and K. Mazda, Sagittal alignment of the cervical spine in adolescent idiopathic scoliosis treated by posteromedial translation, Eur. Spine J. Off

. Publ and . Eur, Spine Soc. Eur. Spinal Deform. Soc. Eur. Sect. Cerv. Spine Res. Soc, vol.22, issue.2, pp.330-337, 2013.

L. Wang and X. Liu, Cervical sagittal alignment in adolescent idiopathic scoliosis patients (Lenke type 1-6), J. Orthop. Sci. Off. J. Jpn. Orthop. Assoc, vol.22, issue.2, pp.254-259, 2017.

E. P. Norheim, L. Y. Carreon, D. J. Sucato, L. G. Lenke, and S. D. Glassman, Cervical Spine Compensation in Adolescent Idiopathic Scoliosis, Spine Deform, vol.3, issue.4, pp.327-331, 2015.

K. Hayashi, Cervical lordotic alignment following posterior spinal fusion for adolescent idiopathic scoliosis: reciprocal changes and risk factors for malalignment, J. Neurosurg. Pediatr, vol.19, issue.4, pp.440-447, 2017.
DOI : 10.3171/2016.9.peds16298

URL : https://thejns.org/downloadpdf/journals/j-neurosurg-pediatr/19/4/article-p440.pdf

M. S. Youn, J. K. Shin, T. S. Goh, S. S. Kang, W. K. Jeon et al., Relationship between cervical sagittal alignment and health-related quality of life in adolescent idiopathic scoliosis, Eur. Spine J. Off. Publ. Eur. Spine Soc. Eur. Spinal Deform. Soc. Eur. Sect. Cerv. Spine Res. Soc, vol.25, issue.10, pp.3114-3119, 2016.

T. S. Protopsaltis, How the neck affects the back: changes in regional cervical sagittal alignment correlate to HRQOL improvement in adult thoracolumbar deformity patients at 2-year follow-up, J. Neurosurg. Spine, vol.23, issue.2, pp.153-158, 2015.

K. H. Bridwell, R. Betz, A. M. Capelli, G. Huss, and C. Harvey, Sagittal plane analysis in idiopathic scoliosis patients treated with Cotrel-Dubousset instrumentation, Spine, vol.15, issue.7, pp.644-649, 1990.

H. Labelle, Comparison between preoperative and postoperative threedimensional reconstructions of idiopathic scoliosis with the Cotrel-Dubousset procedure, Spine, vol.20, issue.23, pp.2487-2492, 1995.

Y. Qiu, Comparison of surgical outcomes of lenke type 1 idiopathic scoliosis: vertebral coplanar alignment versus derotation technique, J. Spinal Disord. Tech, vol.24, issue.8, pp.492-499, 2011.

J. Dubousset, G. Charpak, W. Skalli, G. Kalifa, and J. Lazennec, EOS stereoradiography system: whole-body simultaneous anteroposterior and lateral radiographs with very low radiation dose, vol.93, pp.141-143, 2007.

F. D. Faro, M. C. Marks, J. Pawelek, and P. O. Newton, Evaluation of a Functional Position for Lateral Radiograph Acquisition in Adolescent Idiopathic Scoliosis, Spine, vol.29, issue.20, pp.2284-2289, 2004.

J. Dubousset, A new 2D and 3D imaging approach to musculoskeletal physiology and pathology with low-dose radiation and the standing position: the EOS system, Bull. Acad. Natl. Med, vol.189, issue.2, pp.287-297, 2005.

L. Humbert, J. A. De-guise, B. Aubert, B. Godbout, and W. Skalli, 3D reconstruction of the spine from biplanar X-rays using parametric models based on transversal and longitudinal inferences, Med. Eng. Phys, vol.31, issue.6, pp.681-687, 2009.

R. Vialle, N. Levassor, L. Rillardon, A. Templier, W. Skalli et al., Radiographic Analysis of the Sagittal Alignment and Balance of the Spine in Asymptomatic Subjects, J. Bone Jt. Surg, vol.87, issue.2, pp.260-267, 2005.

J. Dubousset, Reflections of an orthopaedic surgeon on patient care and research into the condition of scoliosis, J. Pediatr. Orthop, vol.31, issue.1, pp.1-8, 2011.

A. B. El-fegoun, F. Schwab, L. Gamez, N. Champain, W. Skalli et al., Center of gravity and radiographic posture analysis: a preliminary review of adult volunteers and adult patients affected by scoliosis, Spine, vol.30, issue.13, pp.1535-1540, 2005.

M. Yu, C. Silvestre, T. Mouton, R. Rachkidi, L. Zeng et al., Analysis of the cervical spine sagittal alignment in young idiopathic scoliosis: a morphological classification of 120 cases, Eur. Spine J. Off. Publ. Eur. Spine Soc. Eur. Spinal Deform. Soc. Eur. Sect. Cerv. Spine Res. Soc, vol.22, issue.11, pp.2372-2381, 2013.

Y. P. Charles, G. Sfeir, V. Matter-parrat, E. A. Sauleau, and J. Steib, Cervical sagittal alignment in idiopathic scoliosis treated by posterior instrumentation and in situ bending, Spine, vol.40, issue.7, pp.419-427, 2015.
DOI : 10.1097/brs.0000000000000767

C. Amabile, H. Pillet, V. Lafage, C. Barrey, J. Vital et al., A new quasiinvariant parameter characterizing the postural alignment of young asymptomatic adults, Eur. Spine J, vol.25, issue.11, pp.3666-3674, 2016.

P. A. Sugrue, Redefining Global Spinal Balance: Normative Values of Cranial Center of Mass From a Prospective Cohort of Asymptomatic Individuals, Spine, vol.38, issue.6, pp.484-489, 2013.

M. Rousseau, S. Laporte, E. Chavary-bernier, J. Lazennec, and W. Skalli, Reproducibility of measuring the shape and three-dimensional position of cervical vertebrae in upright position using the EOS stereoradiography system, Spine, vol.32, issue.23, pp.2569-2572, 2007.

B. Ilharreborde, Angle Measurement Reproducibility Using EOSThreeDimensional Reconstructions in Adolescent Idiopathic Scoliosis Treated by Posterior Instrumentation, Spine, vol.36, issue.20, pp.1306-1313, 2011.
DOI : 10.1097/brs.0b013e3182293548

J. Mcclendon, R. B. Graham, P. A. Sugrue, T. R. Smith, S. E. Thompson et al., Cranial Center of Mass Compared to C7 Plumb Line Alignment in Adult Spinal Deformity, World Neurosurg, vol.91, pp.199-204, 2016.

W. Skalli, Importance of pelvic compensation in posture and motion after posterior spinal fusion using CD instrumentation for idiopathic scoliosis, Spine, vol.31, issue.12, pp.359-366, 2006.