Numerical simulation of internal stress profiles and three-dimensional deformations of lower extremity beneath medical graduated compression stocking (GCS) |
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Authors: | Rong Liu Yi-Lin Kwok Yi Li Terenc-T Lao Xiao Qun Dai Xin Zhang |
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Institution: | (1) Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hung Kom, Kowloon, Hong Kong;(2) Department of Obstetrics and Gynaecology, Faculty of Medicine, The University of Hong Kong, Queen Mary Hospital, Pokfulam Road, Hong Kong;(3) Department of Clothing Art and Design, Xi’an Polytechnic University, Xi’an, China |
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Abstract: | The most significant medical function of graduated compression stocking (GCS) is to provide controlled support and pressure
to the skin surface and the underlying tissues of the lower extremity, to prevent and treat venous disease, thus improving
the blood circulation. However, due to lack of suitable technologies for the experimental measurements, the transfer mechanisms
of the external pressure applied by GCS and internal stress states within the leg soft tissue were not well examined, which
bring some difficulties to GCS compression design. The present study numerically simulated and analyzed surface pressure applied
by GCS and the cross-sectional deformations at the target region of leg. The underlying tissues stress profiles as well as
their dynamic alterations with time processing were presented and quantitatively investigated. Moreover, the medical significance
of the cross-sectional inner stress distributions was discussed. The validation results indicated that the simulated pressure
profiles applied by GCS agreed reasonably well with the measured ones. The developed biomechanical model can be used for prediction
and analysis of the pressure functional performances applied by GCSs, thus helping us more understanding mechanisms of compression
action and improving their medical functions. |
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Keywords: | Numerical stimulation Interval stress Deformation Lower extremity Compression stockings |
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