European Spine Journal

, Volume 27, Issue 9, pp 2120–2129 | Cite as

Axial plane dissimilarities of two identical Lenke-type 6C scoliosis cases visualized and analyzed by vertebral vectors

  • Tamás S. Illés
  • Máté Burkus
  • Szabolcs Somoskeőy
  • Fabien Lauer
  • Francois Lavaste
  • Jean F. Dubousset
Original Article



The global appearance of scoliosis in the horizontal plane is not really known. Therefore, the aims of this study were to analyze scoliosis in the horizontal plane using vertebral vectors in two patients classified with the same Lenke group, and to highlight the importance of the information obtained from these vertebral vector-based top-view images in clinical practice.


Two identical cases of scoliosis were selected, based on preoperative full-body standing anteroposterior and lateral radiographs obtained by the EOS™ 2D/3D system. Three-dimensional (3D) surface reconstructions of the spinal curves were performed by using sterEOS™ 3D software before and after surgery. In both patients, we also determined the vertebral vectors and horizontal plane coordinates for analyzing the curves mathematically before and after surgery.


Despite the identical appearance of spinal curves in the frontal and sagittal planes, the horizontal views seemed to be significantly different. The vertebral vectors in the horizontal plane provided different types of parameters regarding scoliosis and the impact of surgical treatment: reducing lateral deviations, achieving harmony of the curves in the sagittal plane, and reducing rotations in the horizontal plane.


Vertebral vectors allow the evolution of scoliosis curve projections in the horizontal plane before and after surgical treatment, along with representation of the entire spine. The top view in the horizontal plane is essential to completely evaluate the scoliosis curves, because, despite the similar representations in the frontal and sagittal planes, the occurrence of scoliosis in the horizontal plane can be completely different.

Graphical abstract

These slides can be retrieved under Electronic Supplementary Material.


Scoliosis Vertebral vector Horizontal plane Top view EOS™ 2D/3D 



We acknowledge Editage for language editing.


There is no funding source.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical standards

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

Informal consent

For this type of study, formal consent is not required.

Supplementary material

586_2018_5577_MOESM1_ESM.pptx (64.8 mb)
Supplementary material 1 (PPTX 66356 kb)


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Tamás S. Illés
    • 1
    • 2
    • 7
  • Máté Burkus
    • 3
  • Szabolcs Somoskeőy
    • 4
  • Fabien Lauer
    • 5
  • Francois Lavaste
    • 6
  • Jean F. Dubousset
    • 7
  1. 1.Department of Orthopedics and Traumatology, Brugmann University HospitalUniversité Libre de BruxellesBrusselsBelgium
  2. 2.Department of Orthopedic Surgery and Traumatology, Odense University Hospital, Institute of Clinical ResearchUniversity of Southern DenmarkOdenseDenmark
  3. 3.Department of Traumatology and Hand SurgeryPetz Aladár County Teaching HospitalGyőrHungary
  4. 4.Orthopedic Department, University Clinical CenterPécs UniversityPécsHungary
  5. 5.LORIA, Lorraine Research Laboratory in Computer Science and its ApplicationsUniversity of LorraineNancyFrance
  6. 6.Institute of Biomechanics Human Georges Charpak, Arts et Metiers ParisTechParisFrance
  7. 7.National Medical AcademyParisFrance

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