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Canine hip dysplasia (CHD) -- the most common orthopedic problem in dogs -- is caused by a loose hipbone-thighbone connection. It leads to hind-end pain and lameness that can range from mild to crippling. We know CHD is genetically transmitted. But because multiple genes are involved, scientists have yet to unravel the pattern of inheritance. Adding to the CHD riddle is the complicated interplay between heredity and the environment. While we know environmental factors (such as growth rate) influence whether CHD show up clinically during a dog's life, we still don't understand the exact nature of the heredity-environment interaction. Although the disease proportionately affects larger-breed dogs, veterinarians have documented hip dysplasia in just about every type of dog, including mixed breeds. The good news is that owners and breeders can take preventative measures to reduce the odds of a dog developing hip dysplasia. But if your dog does develop CHD, early detection and treatment can help your friend live a long and relatively comfortable life. Loose Hips Remember the lyrics "the hipbone's connected to the thighbone?" To picture a dog's hip joint, imagine a ball fitting into a socket. The ball is the top (head ) of the thighbone (femur ), which. . . Want to learn more about hip dysplasia and how your dog may be affected by it? This is just a small sample of what you'll find in each issue of Your Dog. For information, contact the subscription department. Your Dog is a monthly 24-page newsletter for dog owners and enthusiasts, and is published by the Tufts Media. Annual subscriptions (12 issues) are available for $20.00 (U.S.)
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