Osteoarthritis is a low grade inflammatory process which can occur in any joint. It is the thickening of the joint capsule with alterations in the synovial fluid. Osteoarthritis is characterized by the progressive loss of articular cartilage. There is an increased density of the sub-chondral bone, and all of these changes will cause a progressive change in joint structure and function.
The cartilage covers the ends of the bones. This acts as a shock absorber and allows the movement of the bones against each other without causing damage by rubbing together. Cartilage withstands an enormous amount of impact and therefore has no supply of blood. All the nourishment comes from the synovial fluid around the joint.
Within a joint capsule the synovial fluid is housed. With disuse this fluid thickens, and so movement is important to keep it liquefied. Osteoarthritis usually comes about secondary to the following:
Osteochondrosis in the dog
Legg Perthes Calve disease in the canine
Joint luxation in the dog
Age, genetics, conformation, obesity
Repeated stress on the dog's joint
Surgical interventions on the dog
Hip or elbow dysplasia in the dog
Articular fractures
Chronic joint instability in the dog
Osteoarthritis is not an "old dog" condition and the process in dogs can start very young in life. A normal load on an abnormal joint can start the process as can an abnormal load on a normal joint. Environmental elements and medical or systemic problems, as well as breed factors can all play a role. Arthritis in dogs can occur at anytime.
There are a number of management options for a dog with osteoarthritis. The following list provides some to be explored:
Hot and cold therapy treatments
NSAID's or steroids
Nutritional supplements for the canine
Exercise management for the canine
Weight loss for the dog
Hydrotherapy for the dog
Physiotherapy for the dog
Acupuncture for the dog
Surgical procedures for the dog
Canine hydrotherapy is one of the best treatments for dogs suffering from osteoarthritis or any other form of arthritis. The hydrotherapy reduces pain and inflammation, increases their range of motion, which in turn has a pump action on the synovial fluid - increasing nutrients in the joint capsule and reducing toxins. The warm water increases blood supply to the surrounding soft tissues, which relieves stiffness and spasms. The dog experiences a greater sense of well-being.
In an osteoarthritis study, dogs with hip OA that were fed 60% of their current calorie intake lost 11 - 18% of their body weight. These identical dogs discovered a profound decrease in hind limb lameness (Impellizeri et al. 2000). They need to be kept lean to prevent or delay the onset of osteoarthritis.
It was found that lifelong exercise did not cause cartilage erosion, osteophytes or meniscal injuries, in another study that was done. Dogs that worked out 4km/day x 5 days/week x 40 weeks had a boost in cartilage thickness, proteoglycan content and indentation stiffness (Newton et al. 1997). Canines need to be exercised regularly on surfaces which reduce joint impact and torsions.
There are many therapeutic modalities available for dogs suffering with osteoarthritis. I encourage you to explore which ones work best with your dog.
Helga Schmitt has been avidly studying and researching dog health, physiotherapy and rehabilitation hands on for the past 20 years. She is a Registered Hydrotherapist, Chartered Herbalist, Holistic Nutritionist, and holds a Certificate in Homeopathy. She endeavors to advise dog owners about healthy choices. Get your free Aging Dog Health Guide and read more on arthritis in dogs at www.health-for-dogs.com.




