• français
    • English
    français
  • Login
Help
View Item 
  •   Home
  • Institut de Biomécanique Humaine Georges Charpak (IBHGC)
  • View Item
  • Home
  • Institut de Biomécanique Humaine Georges Charpak (IBHGC)
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Experimental validation of a patient-specific model of orthotic action in adolescent idiopathic scoliosis

Article dans une revue avec comité de lecture
Author
COURTOIS, Isabelle
EBERMEYER, Eric
VIALLE, Raphaël
188248 Université Grenoble Alpes - UFR Langage, lettres et arts du spectacle, information et communication - Dpt Lettres et arts du spectacle [UGA UFR LLASIC LAS]
BOULOUSSA, Houssam
ccSKALLI, Wafa
ccVERGARI, Claudio
99538 Laboratoire de biomécanique [LBM]

URI
http://hdl.handle.net/10985/11887
DOI
10.1007/s00586-016-4511-7
Date
2016
Journal
European Spine Journal

Abstract

Purpose Personalized modeling of brace action have potential in improving brace efficacy in adolescent idiopathic scoliosis (AIS). Model validation and simulation uncertainty are rarely addressed, limiting the clinical implementation of personalized models. We hypothesized that a thorough validation of a personalized finite element model (FEM) of brace action would highlight potential means of improving the model. Methods 42 AIS patients were included retrospectively and prospectively. Personalized FEMs of pelvis, spine and ribcage were built from stereoradiographies. Brace action was simulated through soft cylindrical pads acting on the ribcage and through displacements applied to key vertebrae. Simulation root mean squared errors (RMSEs) were calculated by comparison with the actual brace action (quantified through clinical indices, vertebral positions and orientations) observed in in-brace stereoradiographies. Results Simulation RMSEs of Cobb angle and vertebral apical axial rotation was lower than measurement uncertainty in 79% of the patients. Pooling all patients and clinical indices, 87 % of the indices had lower RMSEs than the measurement uncertainty. Conclusions In-depth analysis suggests that personalization of spinal functional units mechanical properties could improve the simulation’s accuracy, but the model gave good results, thus justifying further research on its clinical application.

Files in this item

Name:
LBM-ESJ-2016-Vergari.pdf
Size:
1010.Kb
Format:
PDF
View/Open

Collections

  • Institut de Biomécanique Humaine Georges Charpak (IBHGC)

Related items

Showing items related by title, author, creator and subject.

  • Head to Pelvis Alignment of Adolescent Idiopathic Scoliosis Patients Both in and Out of Brace 
    Article dans une revue avec comité de lecture
    COURTOIS, Isabelle; EBERMEYER, Eric; PIETTON, Raphaël; BOULOUSSA, Houssam; VIALLE, Raphaël; ccSKALLI, Wafa; ccVERGARI, Claudio (Springer Verlag, 2019)
    Purpose: To determine the short-term effect of bracing of adolescent idiopathic scoliotic (AIS) patients on the relationships between spinopelvic parameters related to balance, by comparing their in and out-of-brace geometry ...
  • Simulation of orthotic treatment in adolescent idiopathic scoliosis using a subject-specific finite element model 
    Communication avec acte
    COURTOIS, Isabelle; EBERMEYER, Eric; BOULOUSSA, Houssam; VIALLE, Raphaël; ccSKALLI, Wafa; ccVERGARI, Claudio (Informa UK Limited, 2015)
    Adolescent idiopathic scoliosis (AIS) is a threedimensional deformity of the spine, often progressing rapidly during the growth spurt. Severe scoliosis can lead to significant degradation of quality of life and functional ...
  • Towards a predictive simulation of brace action in adolescent idiopathic scoliosis 
    Article dans une revue avec comité de lecture
    CHEN, Zhuowei; ROBICHON, Léopold; COURTOIS, Isabelle; EBERMEYER, Eric; VIALLE, Raphaël; LANGLAIS, Tristan; PIETTON, Raphaël; ccSKALLI, Wafa; ccVERGARI, Claudio (Taylor & Francis, 2020)
    Bracing is the most common treatment to stop the progression of adolescent idiopathic scoliosis. Finite element modeling could help improve brace design, but model validation is still a challenge. In this work, the clinical ...
  • Effect of curve location on the severity index for adolescent idiopathic scoliosis: a longitudinal cohort study 
    Article dans une revue avec comité de lecture
    ccVERGARI, Claudio; ccSKALLI, Wafa; ABELIN-GENEVOIS, Kariman; BERNARD, Jean Claude; HU, Zongshan; CHENG, Jack Chun Yiu; CHU, Winnie Chiu Wing; ASSI, Ayman; KARAM, Mohammad; GHANEM, Ismat; BASSANI, Tito; GALBUSERA, Fabio; SCONFIENZA, Luca Maria; BRAYDA-BRUNO, Marco; COURTOIS, Isabelle; EBERMEYER, Eric; VIALLE, Raphael; LANGLAIS, Tristan; DUBOUSSET, Jean (Springer Science and Business Media LLC, 2021)
    Objectives Adolescent idiopathic scoliosis (AIS) is the most common spinal disorder in children. A severity index was recently proposed to identify the stable from the progressive scoliosis at the first standardized ...
  • Quasi-automatic early detection of progressive idiopathic scoliosis from biplanar radiography: a preliminary validation 
    Article dans une revue avec comité de lecture
    COURTOIS, Isabelle; EBERMEYER, Eric; ABELIN-GENEVOIS, Kariman; KIM, Youngwoo; LANGLAIS, Tristan; VIALLE, Raphaël; ASSI, Ayman; GHANEM, Ismat; DUBOUSSET, Jean; ccSKALLI, Wafa; ccGAJNY, Laurent; ccVERGARI, Claudio (Springer Verlag, 2019)
    Purpose To validate the predictive power and reliability of a novel quasi-automatic method to calculate the severity index of adolescent idiopathic scoliosis (AIS). Methods Fifty-five AIS patients were prospectively ...

Browse

All SAMCommunities & CollectionsAuthorsIssue DateCenter / InstitutionThis CollectionAuthorsIssue DateCenter / Institution

Newsletter

Latest newsletterPrevious newsletters

Statistics

Most Popular ItemsStatistics by CountryMost Popular Authors

ÉCOLE NATIONALE SUPERIEURE D'ARTS ET METIERS

  • Contact
  • Mentions légales

ÉCOLE NATIONALE SUPERIEURE D'ARTS ET METIERS

  • Contact
  • Mentions légales