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| Numerical Simulation of Orthotic Insole Deformation for Diabetic Foot |
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Abstract Custom-made orthotic insoles are routinely used in the treatment of
the diabetic foot to reduce plantar pressure so as to minimise the
risk of neuropathic ulceration. Due to the 3D geometry shape of the
foot and insole, the measurement of the foot-orthosis interface
pressure at different plantar regions in relation to insole material
fabrication is vital for effective foot orthotic treatment. In the
present study, a model of a custom-made three-layer contoured insole
that simulates foot-insole interactions is developed by using finite
element analysis. With the use of the insole material properties and
plantar pressure distribution during balanced standing as the
inputs, the magnitude of the deformity and the compressive stress
distributed across the regions of the insole made of different
combinations of materials are simulated. After validation, the
simulated deformation shows good agreement with the result obtained
by image processing technology. The simulation model not only
provides a promising solution to the modification of materials for
insoles by predicting and visualising insole deformation patterns,
but also effectively optimises the design and development process of
orthotic insoles without the need to fabricate and test the insoles
in a series of wear trials.
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| Cite this article: |
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W. T. Lo,K. L. Yick,S. P. Ng, et al. Numerical Simulation of Orthotic Insole Deformation for Diabetic Foot[J]. Journal of Fiber Bioengineering and Informatics, 2015, 8(3): 401-411.
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2015, Vol. 8 
