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In vitro compression of a soft tissue layer on a rigid foundation
C W Oomens1, D H van Campen, H J Grootenboer
1Eindhoven University of Technology, The Netherlands.
Journal of Biomechanics
|January 1, 1987
Summary
This study investigated porcine skin and fat mechanical properties using in vitro compression. Results show skin and fat behave as solid/fluid mixtures, aligning with finite element models.
Area of Science:
- Biomedical Engineering
- Tissue Mechanics
- Computational Biology
Background:
- Understanding the mechanical behavior of biological tissues is crucial for developing medical devices and surgical techniques.
- Porcine skin and fat are frequently used as in vitro models for human tissues.
- Previous models often simplified the complex solid-fluid interactions within tissues.
Purpose of the Study:
- To investigate the in vitro mechanical behavior of porcine skin and fat under compression.
- To compare experimental measurements with computational models.
- To validate the hypothesis that skin and fat act as solid/fluid mixtures.
Main Methods:
- In vitro compression tests were conducted on porcine skin and fat layers.
- Various indentors were used to apply loads to the tissue samples.
- Indentor displacements and interstitial fluid pressures were precisely measured.
- Results were analyzed and compared with finite element calculations utilizing mixture elements.
Main Results:
- Experimental data showed qualitative agreement with finite element model predictions.
- Measured interstitial fluid pressures correlated with indentor displacements.
- The observed mechanical responses supported the solid/fluid mixture hypothesis.
Conclusions:
- Porcine skin and fat exhibit mechanical properties consistent with solid/fluid mixtures.
- Finite element analysis using mixture elements can effectively model tissue behavior.
- These findings have implications for biomechanical modeling and tissue engineering applications.