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Why do ulcers occur?
The causes of leg ulcers can
be put down to 3 main categories
-
1] Venous Causes
(caused by veins not working) - about 80% of leg
ulcers
-
2] Arterial Causes
(caused by the arteries not working) -
about 15% of leg ulcers
-
3] Other Causes
- about 5% of leg ulcers
This website is going to
concentrate on Venous Causes of leg ulcers as this is what
affects most people - and it is also the easiest to cure
in most people.
However, it should be noted
that Specialist Vascular Surgeons always check for
arterial causes and other causes before treating Venous
Leg Ulcers. This is necessary as many leg ulcers occur in
older people - and many may have more than one cause of
their leg ulcers.
Therefore just because a
venous cause is found for the leg ulcer, it doesn't mean
to say that there isn't ALSO an arterial or other cause at
the same time.
Fortunately most arterial leg ulcers can be cured by
bypass surgery or angioplasty. Therefore by accurately
identifying the cause, we are able to cure many of the leg
ulcers - sometimes using combined approaches (ie: treat
the arterial cause first followed by the venous cause).
Ulcers in the "other causes"
need to be treated depending on the specific cause.
Venous
Leg Ulcers
To understand how venous leg ulcers
occur, you have to have some understanding of the structures in the leg
(see animation on the left) and also how the Vein Pump in the leg works.
This is explained in full on a sister
site -
click here if you wish to see an explanation of the vein pump.
Before about 1985, the world of venous
disease was viewed very simply. The venous system of the leg was split
into 2 - the DEEP system and the SUPERFICIAL system.
Doctors and Nurses used to believe that
vein pump failure in each produced different problems as explained in the
next page.
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