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Non invasive evaluation of SpineCor brace correction from surface topography

  • 1,
  • 1, 3,
  • 1, 2,
  • 1,
  • 1, 2 and
  • 1, 2
Scoliosis20072 (Suppl 1) :P10

https://doi.org/10.1186/1748-7161-2-S1-P10

  • Published:

Keywords

  • Surface Topography
  • Adolescent Idiopathic Scoliosis
  • Anatomical Landmark
  • Evaluation Approach
  • Surface Evaluation

Objective

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.

Results

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.

Conclusion

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

(1)
Research Center, Hôpital Sainte-Justine, 3175 Côte-Sainte-Catherine, Montréal, Québec, Canada, H3T 1C5
(2)
Department of Orthopedic Surgery, Université de Montréal, PO Box 6128, Station Centre-ville, Montréal, Québec, Canada, H3C 3J7
(3)
Department of Computer Engineering, École Polytechnique, PO Box 6079, Station Centre-ville, Montréal, Québec, Canada, H3C 3A7

References

  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

Copyright

© Shawfaty et al; licensee BioMed Central Ltd. 2007

This article is published under license to BioMed Central Ltd.

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