Anthony usually prior to an ulceration there appears to be a drop in skin
temperature (known as cold spots). No one is sure why this occurs but maybe
related to local ischaemia. These cold spots have been detected in thermal
scans otherwise are unpalpapable by any other means.
The insulating properties of plastazote (TM) (expanded polyethylene
) are thought to keep the skin at a constant temperature (the material is a
poor conductor of heat). The plastic ability for the material to match the
skin contours by rearranging its structure (often refereed to as "bottoming
out") provides optimal contact which would reduce peak pressures. Movement
of the foot over the insole surface appears to occur on a friction free
plain (shiny surface). In summary all these features would reduce local
peaks in dynamic friction ie heat causing skin damage.
The material is cheap to replace and hence lends itself to serial
care.
Obviously there are many other treatment options available but it
appears sometimes we are more concentrated on long term solutions when
continued life care offers the quality option. All of which I am sure we are
all aware.
Hope this makes sense.
Cameron
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