Premium
Multiphasic modelling of bone‐cement injection into vertebral cancellous bone
Author(s) -
Bleiler Christian,
Wagner Arndt,
Stadelmann Vincent A.,
Windolf Markus,
Köstler Harald,
Boger Andreas,
GueorguievRüegg Boyko,
Ehlers Wolfgang,
Röhrle Oliver
Publication year - 2015
Publication title -
international journal for numerical methods in biomedical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.741
H-Index - 63
eISSN - 2040-7947
pISSN - 2040-7939
DOI - 10.1002/cnm.2696
Subject(s) - cancellous bone , vertebra , bone cement , cement , displacement (psychology) , percutaneous vertebroplasty , experimental data , materials science , computer science , biomedical engineering , mechanics , osteoporosis , engineering , physics , mathematics , geology , composite material , surgery , medicine , psychology , paleontology , statistics , endocrinology , psychotherapist
Summary Percutaneous vertebroplasty represents a current procedure to effectively reinforce osteoporotic bone via the injection of bone cement. This contribution considers a continuum‐mechanically based modelling approach and simulation techniques to predict the cement distributions within a vertebra during injection. To do so, experimental investigations, imaging data and image processing techniques are combined and exploited to extract necessary data from high‐resolution μ CT image data. The multiphasic model is based on the Theory of Porous Media, providing the theoretical basis to describe within one set of coupled equations the interaction of an elastically deformable solid skeleton, of liquid bone cement and the displacement of liquid bone marrow. The simulation results are validated against an experiment, in which bone cement was injected into a human vertebra under realistic conditions. The major advantage of this comprehensive modelling approach is the fact that one can not only predict the complex cement flow within an entire vertebra but is also capable of taking into account solid deformations in a fully coupled manner. The presented work is the first step towards the ultimate and future goal of extending this framework to a clinical tool allowing for pre‐operative cement distribution predictions by means of numerical simulations. Copyright © 2015 John Wiley & Sons, Ltd.