Hip Dysplasia Research
Facts from the source: http://cal.vet.upenn.edu/projects/saortho/chapter_83/83mast.htm
- Hip dysplasia is a complex range of environmental and body conformation and hereditary factors. Hip dysplasia in dogs has no clear-cut pattern of inheritance (although it can be greatly reduced by attempting to control it with breeding stock without HD). Environmental factors must be considered with body conformation as causes.
- Heritability (in a study) has been shown at a rate of 25%.
- Most dogs will be between the ages of 5 months - 12 months at first presentation.
- Hip dysplasia affects humans and other domestic animals. 1.3 human children out of 1000 are affected.
- In humans, females are 4 to 8 times more likely to have hip dysplasia. In dogs, it is equal by gender.
- In a study, pups that overate and ate 'aggressively' (pushing hard with back legs to latch to the mother) - the majority (63%) were dysplastic at 1 year of age.
- The body conformation of breeds with the lowest prevalence is slender and trim. Overweight and giant dogs have the highest.
- Hip dysplasia has not been reported in wild animals such as wolves and foxes. The pups are slow growing and of late maturity.
- Past pedigree history is of little relevance, since many generations may be normal and still produce dysplastic progeny.
Facts from source:
- The rate of growth in a puppy is a primary factor in the development of hip dysplasia.
- No breeder can eliminate ALL risk of hip dysplasia. The average 'german' German Shepherd will show 10 to 15 generations of clean hips before 1 shows with hip dysplasia.
NOTE: We are not veterinarians and the above information was pulled from the cited sources. Check with your vet for advice if you are concerned about your dog's movement.