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ARTHRITIS IN DOGS...
HOW TO RECOGNIZE AND MANAGE ARTHRITIS
by T. J. Dunn, Jr.
DVM
This article was published in Dog World Magazine
Almost every six months a new medication becomes available to veterinarians that helps keep arthritic dogs more mobile and pain free. Any products listed here are only a sample of various medications or supplements that can have a positive impact on dogs and cats that have arthritis. Be sure to check with our veterinarian for updated information on the safety and effectiveness of any medication before it is used on your pet to help improve the pet's quality of life.
Arthritis in dogs is a common and difficult disorder to
manage...
During a routine exam of a six-year-old German Shepard
prior to vaccinations, the client remarked that the dog seemed to be a little
slower moving lately and was more careful about lying down and getting up. There
were no obvious indicators of pain or limping… just a “careful” attitude
on the dog’s part when changing positions. My evaluation of the dog’s limbs
showed a reduced range of motion in the hips, the stifles (knees)
were normal,
and there was no evidence of back pain when I pushed and probed along the spine.
I considered early arthritis in the hips as a possible
explanation for the subtle signs the owner had observed. We decided to sedate
the dog and take some x-rays. What a surprise we had! This dog, only displaying
the subtlest of signs of discomfort, had advanced degeneration of both hip
joints (called coxofemoral osteoarthritis) and early bony changes of the lower
spine. In contrast to this case other patients that radiographically show only
minimal signs of arthritic degeneration in the joints often will display
definite signs of discomfort, lameness and restricted mobility. The bottom line
is this: Arthritis… joint inflammation and degeneration… is personal.
Because there are so many variables associated with joint degenerative changes
on both a microscopic and macroscopic level, each
case must be evaluated
individually; every dog responds uniquely to discomfort and pain.
WHAT IS ARTHRITIS
Arthritis is a general term for abnormal changes in a
joint. Arthritis can arise from joint tissue destruction subsequent to an
infection, from congenital defects affecting structural architecture, and from
stress and trauma to joint surfaces and supporting structures. Occasionally,
disorders of the immune system will lead to joint tissue inflammation and
degeneration. In commonly seen cases of hip dysplasia, arthritis is partly due
to abnormal conformation and misaligned stress points of the coxofemoral joint.
The cartilage is adversely impacted and wears away faster than it can
regenerate. The bony layer beneath the cushioning cartilage can be exposed and
becomes inflamed; the joint capsule surrounding the joint members becomes
thickened, less elastic and highly sensitive. Blood vessels to and from the area
of the joint dilate and the joint becomes swollen and inflamed. Elastic tissues
of the joint stiffen, calcium deposits can build up and nerve endings send pain
signals to the brain. Motion becomes more and more restricted due to the joint
degeneration, and the discomfort and pain prompts the patient to reduce the use
of the joint. Unfortunately, the reduced use further compounds the problems
associated with arthritis because the patient then gains weight and continued
disuse further limits joint mobility.
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X-RAY IMAGES OF
ARTHRITIS |
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| The hip on the right is partially dislocated and early arthritis has begun to develop. Click here to see a large view of a different patient with advanced hip arthritis. | A side view of a dog spinal column with spondylosis... fusion of vertebrae and overgrowth of abnormal bony tissue. | A loose flap of cartilage in the shoulder will lead eventually to arthritis of this joint. See article about this condition, called OCD. | Arthritis of any joint can have diverse causes. Just above this inflamed ankle (hock) joint is seen evidence of bone cancer. Look at an article about cancer here. | Arthritis of a hip joint due to a flattened femoral head, short femoral neck and shallow hip socket. See more information about Hip Dysplasia in this article. |
WHAT TO LOOK FOR
As a survival tactic animals have evolved into stoic
creatures that rarely display outward signs of pain or discomfort. Fortunately
for our domestic dogs, no less stoic than their wild ancestors, veterinarians
today are much more “tuned in” to pain management than in the past.
Veterinarians look for subtle signs in patients in order to discover early
stages of arthritis since outright limping or vocalizing from pain may be the
end stage of long-term joint degeneration. Dog owners really need to be aware of
these subtle changes in their dog’s behavior. Typically what will be noticed
first are an increased weight gain, sleeping more, less interest in playing, and
a change in attitude or alertness. If your dog becomes less excited to greet you
when you come home or vacillates about jumping up on the couch or becomes overly
cautious when climbing stai
ALLEVIATING THE DISCOMFORT OF ARTHRITIS
| NOTE WELL!! With any medication, and especially with non-steroidal anti-inflammatory medications such as many pain relieving "arthritis medications", there can be occasional adverse reactions for individual patients. There are many anti-inflammatory medications that are prescribed for dogs. You and your veterinarian need to discuss the pros and cons of any medication your dog or cat is taking, especially those being taken on a continuing basis. Immediately discontinue use of any medication, and contact your veterinarian, as soon as a suspected adverse reaction occurs. Reactions can be variable, subtle, severe, or unusual; individual attention to each medication's potential adverse effects should be discussed with your veterinarian. |
called RIMADYL® (Carprofen). Not long after RIMADYL became
available in 1997 it quickly evolved to be the most prescribed medication
worldwide for treatment of arthritic discomfort in dogs. Over ten million canine
patients have been given nearly a billion doses of Rimadyl. J. Michael
McFarland, DVM, DABVP, Director of the Sedation and Pain Management Team at
Pfizer Animal Health's Companion Animal Division, states, “Part of Rimadyl’s
popularity arises from the fact that there has been an excellent ‘response to
treatment’. In many cases the patient will respond with a better quality of
life and improved function within a few days of treatment.”
As with any medication, safety is an issue. I asked
McFarland about the safety of RIMADYL, especially since many of the dogs needing
arthritis discomfort relief are older animals. McFarlane makes a good point when
he says, " Whenever any medication is used for long term therapy for
ongoing conditions, such as diabetes, epilepsy, thyroid dysfunction or kidney
disease, the veterinarian will need to do some ongoing
testing. That’s why
blood chemistry parameters are routinely checked whenever long-term drug therapy
is administered in the treatment of diseases. Periodic blood tests should be
evaluated when any NSAIDS are used in the treatment of osteoarthritic pain.”
NSAIDS (non-steroidal anti-inflammatory drug) is a class of anti-inflammatory
medication, such as aspirin, that do not contain cortisone-like chemicals.
Another promising and effective discomfort relieving medication is called DERAMAXX from Novartis Animal Health. On the market since August, 2002, initial approval for Deramaxx was for postoperative pain in dogs and since it worked so well it has now been approved for use in alleviating the pain and inflammation of arthritis. Deramaxx is classified as a nonsteroidal anti-inflammatory drug (NSAID).
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All have side effects |
COMMON PRESCRIPTION NSAIDs USED IN DOGS (and in special situations with caution in cats ) |
All have side effects |
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| DERAMAXX | METACAM | ETODOLAC | ETOGESIC | PIROXICAM | RIMADYL | ZUBRIN | BUTAZOLIDIN |
Metacam (meloxicam) is a liquid NSAID that has been well accepted for arthritis management in dogs and is now available in the USA by prescription only from your veterinarian. EtoGesic® (etodolac) has been used quite successfully in dogs for a number of years. Other anti-arthritis medications are being studied and released for use in animals, much to the joy of dogs and their owners!
HOW TO MANAGE
Keeping excess body weigh to a minimum is a very important
aspect of managing arthritis in dogs. Often, simply reducing the dog’s weight
to a reasonable level will effect noticeable changes in the dog’s activity and
mobility. Exercise is important to entice the dog to maintain and improve joint
movement and flexibility. Soft, cushioned sleeping surfaces that keep the dog
comfortable
and warm may aid in lessening arthritic discomfort. A hardwood floor
of a living room or doghouse will not serve the dog well in alleviating joint
stiffness. Massage therapy should be considered, too.
In the past few years a number of products called nutraceuticals have had remarkable success in assisting dogs with various disorders, including arthritis. A nutraceutical is defined as a food or naturally occurring food supplement thought to have a beneficial effect on health. Nutraceuticals are not considered medications and can be obtained without a prescription. Among the most popular are chondroprotectives… substances that when eaten provide nutrients that are required for repair and maintenance of joint tissue. According to veterinarian Stacy Martin of Fort Dodge Animal Health, a leading manufacturer of anti-arthritis products such as the NSAID EtoGesic® (etodolac) Tablets for dogs, “Nutraceuticals with Glucosamine and Chondroitin Sulfate have been proven to aid dogs with osteoarthritis. With so many choices of these products available it is very important to purchase a product that has been made by a manufacturer who maintains high manufacturing standards. All over-the-counter products may not have the same quantity or have the same quality of products listed on their ingredients. Oral nutraceuticals such as chondroprotectives repair and reduce cartilage breakdown in a joint,'' Martin adds.
One of the most effective treatment approaches can be to use NSAIDs and chondroprotectives together. “There are many ways to help battle the pain and progression of osteoarthritis. Based on the type of osteoarthritis and the individual dog, management may require only one or possibly many approaches. Some approaches include exercise programs, weight control, nutraceuticals and NSAID use. Often, the nutraceutical is not enough to ease your pet's pain. An NSAID, such as EtoGesic, is often used in conjunction or alone in the management of pain and inflammation associated with osteoarthritis.” As well, there is evidence that Omega Fatty Acids in the diet can help alleviate the inflammation and discomfort of arthritis.
Caution! Some medications that humans commonly take to subdue arthritic discomfort may be totally inappropriate for use in dogs. Acetaminophen, for example, has been associated with liver damage in dogs. And Ibuprophen has been reported to cause gastro-intestinal bleeding. Martin provides good advice when she says, “Your veterinarian will help you decide which course of action is best for your pet. It is very important not to try treating your pet with any type of product, nutraceutical or NSAID, without consulting your veterinarian. It is also important to use FDA approved products for animals rather than a product made for humans. Together with your veterinarian, you can devise a program for your dog to let him have a happier, more active life.”
Arthritis Management |
Glucosamine/Chondroitin |
Orthopedic Problems |
Obesity In Cats |
View x-ray films |
Omega Fatty Acids |
Hip Dysplasia |
Links to other topics in ThePetCenter below...
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