Paper 10.033

F. Cheriet et al., "3D Digitizing Device Applied in Evaluation and Simulation of Postoperative Trunk Surface Shape in Adolescent Idiopathic Scoliosis", in Proc. of 1st Int. Conf. on 3D Body Scanning Technologies, Lugano, Switzerland, 2010, pp. 33-41,


3D Digitizing Device Applied in Evaluation and Simulation of Postoperative Trunk Surface Shape in Adolescent Idiopathic Scoliosis


Farida CHERIET 1,3, Li SONG 2, Philippe DEBANNÉ 1,3, Olivier DIONNE 1, Hubert LABELLE 3,4

1 Department of Computer Engineering, École Polytechnique de Montréal, Montréal (QC), Canada;
2 Creaform Inc., Lévis (QC), Canada;
3 Research Center, CHU Sainte-Justine, Montréal (QC), Canada;
4 Department of Surgery, Faculty of Medicine, Université de Montréal, Montréal (QC), Canada


Adolescent idiopathic scoliosis (AIS) is a complex 3D deformation of the musculo-skeletal system of the trunk, with a prevalence of about 1% to 3% in the general population. Scoliosis is clinically apparent by observing the asymmetry of spinous processes, ribs, and scapulae, imbalance between the top and bottom of the spine, and left-right asymmetry of the trunk. Among patients with AIS, about 1 in 1,000 will need surgery using spinal instrumentation and fusion to correct the deformity. However, while the surgeon's main goals are to correct the spinal deformity and achieve spinal balance, the most important outcome for patients is the correction of the external shape of the trunk.
This paper provides an overview of work done in recent years by our research group to exploit data collected using a Creaform surface digitizing setup to study the surgical correction of trunk external shape of AIS patients treated at Sainte-Justine University Hospital Center (CHU). We first describe our surface acquisition system and clinical setup. We then introduce a set of clinical measurements (indices) based on the trunk's external shape, to quantify its degree of asymmetry. We then present the results of a preliminary study assessing the effect of scoliosis surgery on the external trunk shape. We finally present a hybrid, deformable model of the human trunk for prediction of surgical outcome on trunk shape in AIS.
The longer term aim of this research is to develop a validated simulation tool that would allow the clinician to illustrate to the patient the potential result of the surgery and would help in deciding on a surgical strategy that could most improve their external appearance.


3D body digitizing, scoliosis, 3D analysis, non-invasive data, surgery correction, simulation


Full paper: 10.033.pdf
Proceedings: 3DBST 2010, 19-20 Oct. 2010, Lugano, Switzerland
Pages: 33-41

Copyright notice

© Hometrica Consulting - Dr. Nicola D'Apuzzo, Switzerland,
Reproduction of the proceedings or any parts thereof (excluding short quotations for the use in the preparation of reviews and technical and scientific papers) may be made only after obtaining the specific approval of the publisher. The papers appearing in the proceedings reflect the author's opinions. Their inclusion in these publications does not necessary constitute endorsement by the editor or by the publisher. Authors retain all rights to individual papers.

Proceedings of 3DBODY.TECH International Conferences on 3D Body Scanning & Processing Technologies, © Hometrica Consulting, Switzerland