• 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.

Fast Subject Specific Finite Element Mesh Generation of Knee Joint from Biplanar X-ray Images

Type
Communications sans actes
Author
LAHKAR, Bhrigu
466360 Institut de Biomecanique Humaine Georges Charpak
THOREUX, Patricia
300210 Hôpital Avicenne [AP-HP]
466360 Institut de Biomecanique Humaine Georges Charpak
SKALLI, Wafa
466360 Institut de Biomecanique Humaine Georges Charpak

URI
http://hdl.handle.net/10985/16602
Date
2018

Abstract

Numerous finite element (FE) models of the knee joint have been developed to investigate knee pathology, post-surgery assessment and natural knee biomechanics. However, because of the extensive computational effort required for preparing subject specific model from CT-scan or MRI data, most of the models in literature are done only for one subject resulting in poor validation of the model and limits the predictive power of the conclusions. Biplanar X-ray is a promising alternative to perform 3D reconstruction of bony structures because of low radiation dose and very less reconstruction time [1]. Moreover, an accurate and fast computational mesh is a prerequisite for generating subject specific mesh in order to perform personalized FE analysis. Traditionally, both triangular/tetrahedral and quadrilateral/hexahedral FE elements are used for 3D mesh generation. But because of distinct numerical advantages quadrilateral/hexahedral elements are preferred to avoid numerical instability, specifically for problems involving high strains at soft tissues [2]. The aim of the current study is to develop fast and automatic subject specific mesh for knee joint from biplanar X-ray images. This approach was successfully tested for 6 cadaveric specimen, where from the biplanar radiographic images of each, 3D reconstruction models were built with a mean time of about 10 min for each specimen by adapting the strategy of [1]. From the reconstruction models, subject specific mesh (4 noded shell) for bony and cartilage structures were generated based on the mapping from the generic model to subject specific model with about 10 sec of time for each specimen (Fig. 1). Both the meniscus were meshed with 8 noded hex elements using the nodes of femoral and tibial cartilage in a dedicated Matlab code with numerical cost of almost 1 min. So, a total of about 12 min computational time was required to build each subject specific knee from 3D reconstruction to mesh generation which is promising for clinical applications. Quality of mesh for individual specimen was also checked using mesh quality indicators (Jacobian ratio, aspect ratio etc.) and surface representation accuracy, which showed less than 1% (warning only) and 0.8 mm (at soft tissue regions) respectively for individual specimen.

Files in this item

Name:
IBHGC-CMBBE-Lahkar-2018.pdf
Size:
1.168Mb
Format:
PDF
View/Open

Collections

  • Institut de Biomécanique Humaine Georges Charpak (IBHGC)

Related items

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

  • Tibio-femoral joint constraints for bone pose estimation during movement using multi-body optimization 
    BERGAMINI, Elena; PILLET, Hélène; HAUSSELLE, Jérôme; THOREUX, Patricia; GUERARD, Sandra; CAMOMILLA, Valentina; CAPPOZZO, Aurelio; SKALLI, Wafa (elsevier, 2011)
    When using skin markers and stereophotogrammetry for movement analysis, bone pose estimation may be performed using multi-body optimization with the intent of reducing the effect of soft tissue artefacts. When the joint ...
  • Femur, tibia and fibula bone templates to estimate subject-specific knee ligament attachment site locations 
    PILLET, Hélène; BERGAMINI, Elena; ROCHCONGAR, Goulven; CAMOMILLA, Valentina; THOREUX, Patricia; ROUCH, Philippe; CAPPOZZO, Aurelio; SKALLI, Wafa (Elsevier, 2016)
    In-vivo estimates of the positions of knee ligament attachment sites are crucial for subject-specific knee modelling. The present study provides template digital models of femur, tibia and fibula that embed the positions ...
  • Estimation of subject-specific ligament length variation during knee flexion 
    BERGAMINI, Elena; PILLET, Hélène; ROCHCONGAR, Goulven; THOREUX, Patricia; SKALLI, Wafa; CAPPOZZO, Aurelio; ROUCH, Philippe (Taylor & Francis, 2015)
    Detailed knowledge about subject-specific knee ligament length variation during knee flexion is crucial for musculoskel- etal modeling in human movement analysis and in clinical con- texts (Ascani et al. 2014). In this ...
  • A new method for the evaluation of the end-to-end distance of the knee ligaments and popliteal complex during passive knee flexion 
    ROCHCONGAR, Goulven; PILLET, Hélène; BERGAMINI, Elena; MOREAU, S; THOREUX, Patricia; SKALLI, Wafa; ROUCH, Philippe (Elsevier, 2016)
    Background: Accurate knowledge about the length variation of the knee ligaments (ACL, PCL, MCL and LCL) and the popliteal complex during knee flexion/extension is essential for modelling and clinical applications. The aimof ...
  • 3D Sequential Kinematics of the Femoro-Tibial Joint of Normal Knee from Multiple Bi-planar X-rays: Accuracy and Repeatability 
    LANGLOIS, Karine; PILLET, Hélène; LAVASTE, François; ROCHCONGAR, Goulven; ROUCH, Philippe; THOREUX, Patricia; SKALLI, Wafa (ELSEVIER, 2018)
    Background: Several methods can be used to assess joint kinematics going from optoelectronic motion analysis to biplanar fluoroscopy. The aim of the present work was to evaluate the reliability of the use of biplane ...

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