Experimental measurements of stresses and strains for lower extremity injuries (LEI) are invasive, and
therefore, predictions require physiologically accurate 3D finite element (FE) models of the foot and ankle. In
previous models, skin is typically neglected. However, experimental studies have shown that skin is much stiffer
than soft tissue. In this study, the material sensitivity of skin on foot arch deformation is investigated. A finite
element model of the foot is developed, incorporating bones, soft tissue, ligament, articulating surfaces, plantar
aponeurosis, skin and plantar plate. Balanced standing is simulated without skin or with three different skin
mechanical properties. By including different skin models, the foot static vertical stiffness, navicular displacement
and plantar aponeurosis strain change significantly, when compared with the model without skin. The study shows
that skin, showing a much stiffer behaviour than soft tissue, should not be neglected in the foot modelling. Further,
the plantar plate considered in this model can give merit to modelling injuries such as plantar plate tearing.
OU Haihuaa (欧海华), QAISER Zeeshana, KANG Lipinga (康利平), JOHNSON Shanea,b*
. Effect of Skin on Finite Element Modeling of Foot and Ankle During Balanced Standing[J]. Journal of Shanghai Jiaotong University(Science), 2018
, 23(1)
: 132
-137
.
DOI: 10.1007/s12204-018-1918-9
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