Archive ouverte HAL - Prediction of brace effect in scoliotic patients: blinded evaluation of a novel brace simulator—an observational cross-sectional study

Prediction of brace effect in scoliotic patients: blinded evaluation of a novel brace simulator—an observational cross-sectional study

Aurélien Courvoisier 1 Matthieu Nesme 2 Julien Gerbelot Alexandre Moreau-Gaudry 3 François Faure 2
1 TIMC-IMAG-SPM - Santé, Plasticité, Motricité
TIMC-IMAG - Techniques de l'Ingénierie Médicale et de la Complexité - Informatique, Mathématiques et Applications, Grenoble - UMR 5525
3 TIMC-IMAG-GMCAO - Gestes Medico-chirurgicaux Assistés par Ordinateur
TIMC-IMAG - Techniques de l'Ingénierie Médicale et de la Complexité - Informatique, Mathématiques et Applications, Grenoble - UMR 5525
Abstract : PURPOSE: Bracing is the most commonly used treatment for scoliosis. But braces remain predominantly "handcrafted." Our objective was to create a novel brace simulator using a high-fidelity 3D "avatar" of the patient's trunk. METHODS: An observational cross-sectional study was constructed. The inclusion criteria were patients with a moderate idiopathic scoliosis (between 15° and 35° of Cobb angle) aged between 9 and 15 years old with an indication of brace treatment. Twenty-nine scoliotic patients, 25 girls and four boys, with a mean age of 12.4 years were included. Twenty right thoracic and 14 left lumbar were measured with a mean Cobb angle of 24°. 3D "avatars" were generated using a novel technology called the "anatomy transfer." Biomedical simulations were conducted by engineers who were blinded to the clinical effect of the real patient brace. The in-brace Cobb angle effect (real effect) was compared with the virtual numeric in-brace Cobb angle observed using the blindly constructed avatar (simulation effect). RESULTS: Real and simulated in-brace Cobb angle were compared using a paired two-sided Student's t test. The real mean Cobb angle was 11° and 17° in the simulation which was statistically significant. The strength of prediction of the simulation was assessed for each individual patient; 76% of the real in-brace Cobb angles had good and moderate prediction (± 10°). CONCLUSIONS: Incorporating high-fidelity copy of the entire 3D shape of the patient's trunk and multiple 3D-reconstructed bony images into an anatomical reference avatar resulted in moderate-to-good prediction of brace effect in three quarters of patients. These slides can be retrieved under Electronic Supplementary Material.
Type de document :
Article dans une revue
Liste complète des métadonnées

https://hal.archives-ouvertes.fr/hal-02180490
Contributeur : Catherine Zoppis <>
Soumis le : jeudi 11 juillet 2019 - 14:41:43
Dernière modification le : mardi 10 septembre 2019 - 10:39:34

Identifiants

Citation

Aurélien Courvoisier, Matthieu Nesme, Julien Gerbelot, Alexandre Moreau-Gaudry, François Faure. Prediction of brace effect in scoliotic patients: blinded evaluation of a novel brace simulator—an observational cross-sectional study. European Spine Journal, Springer Verlag, 2019, 28 (6), pp.1277-1285. ⟨10.1007/s00586-019-05948-9⟩. ⟨hal-02180490⟩

Partager

Métriques

Consultations de la notice

5774