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Open Access

Non invasive evaluation of SpineCor brace correction from surface topography

  • Nancy Shawfaty1,
  • Farida Cheriet1, 3,
  • Christine Coillard1, 2,
  • Souad Rhalmi1,
  • Hubert Labelle1, 2 and
  • Charles Hilaire Rivard1, 2
Scoliosis20072(Suppl 1):P10

Published: 12 October 2007


Surface TopographyAdolescent Idiopathic ScoliosisAnatomical LandmarkEvaluation ApproachSurface Evaluation


Surface topography is used as a non invasive acquisition of the external trunk geometry of adolescent idiopathic scoliosis (AIS). The aim of this study is to investigate a surface evaluation approach to evaluate the three-dimensional correction by inferring the in-brace trunk surface of patients undergoing SpineCor brace treatment [1].

Study design

Inspeck 3D digitizers were used to acquire the external without-brace and with-brace trunk of fifteen patients. On both acquisitions, anatomical landmarks were identified. Using landmark based elastic registration, the in-brace surface is obtained by transforming the without-brace trunk into the with-brace trunk. To quantify the external trunk correction, indices of torso asymmetry are extracted from the without-brace and the in-brace surface. The external correction is then correlated to thoracic and vertebral rotations determined from three-dimensional reconstruction of the spine and rib cage from multiple X-ray images.


Preliminary results have demonstrated that clinical indices measured on the in-brace trunk successfully quantify the three-dimensional correction induced by the SpineCor brace on the trunk surface.


The proposed approach is a first step in establishing reliable non invasive and radiation free follow up for brace treatment while providing a quantitative three-dimensional measure of the external correction.

Authors’ Affiliations

Research Center, Hôpital Sainte-Justine, Montréal, Canada
Department of Orthopedic Surgery, Université de Montréal, Montréal, Canada
Department of Computer Engineering, École Polytechnique, Montréal, Canada


  1. Coillard C, Leroux MA, Badeaux J, Rivard CH: SPINECOR: a new therapeutic approach for idiopathic scoliosis. Stud Health Technol Inform. 2002, 88: 215-217.PubMedGoogle Scholar


© Shawfaty et al; licensee BioMed Central Ltd. 2007

This article is published under license to BioMed Central Ltd.