Skin tissue can be regarded as a solid-liquid biphasic visco-elastic porous material constructed by with the blood flowing in tissues as the liquid phase and collagen fibers as the solid phase.
As skin tissues are consolidated by percutaneous pressure, it is important to quantitatively study the relationship between decline in porosity and blood circulation disorder. Consolidation of tissues due to creep deformation of rabbit ears and subsequent changes in blood flow were measured.
Blood flow compliance C
S inside tissues is expressed as an exponential function of porosity P as C
S=345.3P
-2.68 (correlation coefficient R
2=0.999), and it came to light that blood flood inside tissues rapidly decline under the percutaneous pressure of 20 mm Hg or more.
In order to give a high level of safety and biocompatibility to the prosthetic socket, it is necessary to ensure that adequate blood flows to the skin tissue of the amputated limb, where the socket is mounted.
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