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Animal Health > What is Arthritis in Pets?
And What Are GLUCOSAMINE Sulfate and CHONDROITIN SUPPLEMENTS
T. J. Dunn, Jr. DVM
We do need to get something firmly
fixed in our minds, though, before we
get into a discussion of supplements
and their effects on arthritis in
dogs. If any joint in the dog's body
(and this is true in humans as well)
has significant structural changes
from normal, no amount of consumed
nutrients in any form will correct
that structural damage. If there are
calcium deposits, scar tissue,
cartilage tears and dissolution,
contour changes to the bones at the
joint surfaces from long term
abnormal forces being applied...
these abnormalities will remain
present and will continue to affect
the animal regardless of nutritional
intake.
Supplements to the dog's diet
such as Glucosamine and Chondroitin
Sulfate, Omega Fatty Acids, Vitamin
E, Selenium, and MSM
(MethylSulfanoMethane) all assist in
decreasing inflammation and improving
the body's ability to repair and
strengthen tissues. Supplements will
not reverse structural changes in a
joint such as torn cartilage, calcium
deposits and advanced scar tissue.
Take a look at a normal hip joint
radiograph on the left and an
arthritic hip joint on the right. The
best you can expect from an arthritic
joint such as on the right when
providing supplements such as
Glucosamine and Chondroitin is a
decrease in pain sensation, an
improved resistance to additional
joint tissue breakdown, and
rejuvenation (improved health) of
some soft tissues.
No supplement,
Vitamin or mineral, magnetic therapy,
gold salt, chiropractic manipulation,
herbal remedy, heat treatment or
"special diet" will make
the hip on the right ever return to
the condition of the hip on the left.
The time to address potential
abnormal joint changes is before
chronic stresses impact the joint
conformation and structure. Genetic
and environmental factors play a
major roll in the development of the
joint structures and lay the
foundation for joint parameters
affecting eventual joint health or
disease. There is no cure for
arthritis. Management is the key.
CAUSES OF ARTHRITIS
There are various causes of arthritis
(inflammation of a joint). Some of
the most common are: Genetic
malformation of bone structure that
creates a misalignment of joint
structures, trauma or infection to
joint surfaces, torn supporting
ligaments or tendons (see Anterior
Cruciate Ligament [ACL] surgery),
poor nutrition, overweight puppy
during the growth process, and
auto-immune disturbances. The
ultimate outcome of these factors is
a joint that simply isn't working
properly and where the sensory nerve
endings in the supporting joint
structures are irritated. These
irritated nerve endings in the
stressed joint tissues send pain and
discomfort signals to the brain. The
result is a dog that limps, rests
often and is reluctant to move in a
normal fashion. And since there is no
nerve cells in articular cartilage,
when pain is present it is coming
from the joint capsule, ligaments and
supporting tissues.
These changes in a joint
can occur rapidly, such as after a
fracture and unsatisfactory healing,
or progress with subtle but long term
damage as with moderate forms of hip
dysplasia. Gradual degeneration of
the spine such as in the image above
is very common and takes years to
develop. Since there are no blood
vessels or sensory nerves in joint
cartilage, damage to cartilage can be
quite advanced before the surrounding
supportive tissues become inflamed
and sore.
TREATMENT OF
ARTHRITIS
Unfortunately, since we cannot
remodel the joint without surgical
intervention, attempts are made to
reduce the inflammation at the nerve
endings so that the dog is at least
comfortable even if range of motion
may be compromised. Very effective
medication such as the steroids
Prednisone, Dexamethasone, and other
corticosteroids will markedly reduce
swelling and inflammation to affected
joints. But there is a downside to
the use of steroids for long term
palliation of arthritis. Intermittent
use may be indicated; long term use
should always be questioned. Long
term corticosteroid use can actually
contribute to additional joint damage
and breakdown. Steroids and NSAIDs do
not promote healing of joint tissues,
whereas the Nutraceuticals described
here can.
Glucosamine Sulfate
and Chondroitin Sulfate
supplements are fast becoming the
most widely used supplements in dogs'
diets. The reason is this: Arthritis
in dogs is one of the most common
health problems seen by
veterinarians. And quite
unfortunately dog owners and
veterinarians rarely notice the early
warning signs of arthritis in dogs
because these animals have the
character to ignore soreness and
discomfort until the arthritic
changes in the joints have progressed
significantly. Recent widespread
availability of nutraceuticals such
as GLUCOSAMINE and CHONDROITIN
SULFATE have proven to be significant
contributors to easing the discomfort
of arthritis in dogs. Plus these
substances actually promote healing
and tissue repair.
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