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Digital Planimetry for Assessing Wound Closure Kinetics in a Mouse Model
Published on: January 10, 2025
Finite element models of wound closure
1Bioengineering Institute, University of Auckland, Level 6, 70 Symonds Street, 1010 Auckland, New Zealand. c.flynn@auckland.ac.nz
Journal of Tissue Viability
|November 28, 2009
Summary
Computational models show elliptical excisions minimize stress and scarring in wound closure. Optimizing excision shape, considering skin properties and pre-stress, is key for better healing outcomes.
Area of Science:
- Biomechanical Engineering
- Dermatology
- Computational Modeling
Background:
- Wound healing success depends on factors like wound size, location, and skin properties.
- Developing accurate computational models is crucial for understanding and predicting wound closure outcomes.
Purpose of the Study:
- To develop computational models for simulating skin wound closure.
- To compare the effects of different excision shapes on wound healing parameters.
Main Methods:
- Finite element models were used to simulate skin incision, excision, and closure.
- An orthotropic constitutive law represented skin properties.
- Analysis included extrusion size, maximum stresses, and closure forces for various excision shapes.
Main Results:
- Elliptical excisions resulted in significantly lower maximum stresses (30-40%) and closure forces (27-66%) compared to fusiform and lazy S-plasty.
- Circular excisions led to larger extrusion heights (76%) and lengths (50%) than fusiform or lazy S-plasty.
- Skin's orthotropic nature, excision orientation, and in vivo pre-stress significantly impact wound closure behavior and extrusion size.
Conclusions:
- Computational models can identify optimal excision shapes to minimize adverse stress and scarring.
- Patient-specific models could enhance healing strategies and improve patient quality of life.
