Abstract
The appearance of pressure ulcers is a very common occurrence, especially for
people with limited mobility who are obliged to spend a long time prone on a support surface.
Pressure ulcers in severe cases can cause damage to underlying muscle and bone. Damage to
deeper tissues, tendons and joints may also occur. Serious complications, such as infection of
the bone (osteomyelitis) or blood (sepsis), can occur if pressure sores progress. While the
main strategy for dealing with pressure ulcers is centred around the interaction of patient and
care-giver (manually changing the position of the patient every two hours in order to relieve
pressure on critical body areas, examination of patient for signs of pressure ulcer formation)
there are auxiliary approaches, such as the choice of a pressure relieving support surface.
Currently, a variety of support surfaces exists. The criteria of choice are dependent on factors
such as the medical history of the patient and economic. The emergence of 3D spacer fabrics
as textile materials with good compression behaviour makes them suitable candidates for the
production of support surfaces that contribute to the prevention of pressure ulcers. In order to
decide on their suitability, extended clinical trials involving actual patients must be
performed. In the present paper, a computational methodology utilizing a tool, widely used in
the area of engineering namely Finite Element (FE) Method, is proposed as a supporting tool
for the preliminary evaluation of the suitability in terms of mechanical behaviour of certain
3D spacer fabrics, providing an insight of the deformation, stress and strain developed on the
bodies (human body – mattress) as well as on their interface.