This article is from the Canine Medical Information FAQ, by Cindy Tittle Moore with numerous contributions by others.
There is a program here for radiographic evaluation of dogs. Wind
Morgan is the most well known of these programs, offered to Labrador
Retrievers. There are similar programs for Rottweilers and a few other
breeds. Wind Morgan will certify at one year of age or older and
requires xrays of hips, elbows, and hocks. They will hold clinics
around the country to help hold costs down.
Genetic Disease Control is actually a larger effort to collect data on
all kinds of genetic diseases, of which Hip Dysplasia is only one.
They have registries and information on a wide array of diseases. All
their registries are open, in an effort to make more information
available to breeders in making informed choices about their breeding
stock. For more information, write to
PO Box 222
Davis, CA 95617
Outside the United States
Each country typically has its own hip evaluation program. These are
not consistent from country to country and may differ with the
evaluations give by the above US organizations. In Australia, dogs are
evaluated by the Australian Veterinary Association that has an
Australian wide scoring scheme with averages for each breed.