Author
Listed:
- Jan Wieding
- Robert Souffrant
- Andreas Fritsche
- Wolfram Mittelmeier
- Rainer Bader
Abstract
The use of finite element analysis (FEA) has grown to a more and more important method in the field of biomedical engineering and biomechanics. Although increased computational performance allows new ways to generate more complex biomechanical models, in the area of orthopaedic surgery, solid modelling of screws and drill holes represent a limitation of their use for individual cases and an increase of computational costs. To cope with these requirements, different methods for numerical screw modelling have therefore been investigated to improve its application diversity. Exemplarily, fixation was performed for stabilization of a large segmental femoral bone defect by an osteosynthesis plate. Three different numerical modelling techniques for implant fixation were used in this study, i.e. without screw modelling, screws as solid elements as well as screws as structural elements. The latter one offers the possibility to implement automatically generated screws with variable geometry on arbitrary FE models. Structural screws were parametrically generated by a Python script for the automatic generation in the FE-software Abaqus/CAE on both a tetrahedral and a hexahedral meshed femur. Accuracy of the FE models was confirmed by experimental testing using a composite femur with a segmental defect and an identical osteosynthesis plate for primary stabilisation with titanium screws. Both deflection of the femoral head and the gap alteration were measured with an optical measuring system with an accuracy of approximately 3 µm. For both screw modelling techniques a sufficient correlation of approximately 95% between numerical and experimental analysis was found. Furthermore, using structural elements for screw modelling the computational time could be reduced by 85% using hexahedral elements instead of tetrahedral elements for femur meshing. The automatically generated screw modelling offers a realistic simulation of the osteosynthesis fixation with screws in the adjacent bone stock and can be used for further investigations.
Suggested Citation
Jan Wieding & Robert Souffrant & Andreas Fritsche & Wolfram Mittelmeier & Rainer Bader, 2012.
"Finite Element Analysis of Osteosynthesis Screw Fixation in the Bone Stock: An Appropriate Method for Automatic Screw Modelling,"
PLOS ONE, Public Library of Science, vol. 7(3), pages 1-10, March.
Handle:
RePEc:plo:pone00:0033776
DOI: 10.1371/journal.pone.0033776
Download full text from publisher
Citations
Citations are extracted by the
CitEc Project, subscribe to its
RSS feed for this item.
Cited by:
- Elder Michael Andrango Castro & Svatava Konvickova & Matej Daniel & Zdenek Horak, 2017.
"Identification of the critical level of implantation of an osseointegrated prosthesis for above-knee amputees,"
Computer Methods in Biomechanics and Biomedical Engineering, Taylor & Francis Journals, vol. 20(14), pages 1494-1501, October.
- Jonathan Pitocchi & Mariska Wesseling & Gerrit Harry van Lenthe & María Angeles Pérez, 2020.
"Finite Element Analysis of Custom Shoulder Implants Provides Accurate Prediction of Initial Stability,"
Mathematics, MDPI, vol. 8(7), pages 1-13, July.
Corrections
All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:plo:pone00:0033776. See general information about how to correct material in RePEc.
If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.
We have no bibliographic references for this item. You can help adding them by using this form .
If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: plosone (email available below). General contact details of provider: https://journals.plos.org/plosone/ .
Please note that corrections may take a couple of weeks to filter through
the various RePEc services.