Pupscan will assist you in making an informed decision regarding your breed. Our aim is to provide you the breeder, with the information that is needed to minimise the risk of predominantly genetic abnormalities that prevent normal hip and elbow development.
Some abnormalities that have no genetic basis can be helped by early non-invasive intervention to prevent disability in adult life. This approach has proven to be successful in human infants for many years.
If joint problems develop after the scan has shown normal hips there is a high probability that it is not due to your breeding. A full diagnosis should be obtained from an appropriately qualified veterinary surgeon before removing the dog from your breeding stock.
It is worth noting that the term ‘Dysplasia’ is not a diagnosis but rather a descriptive term. Unless a true genetic cause is established with gene analysis or statistically validated inheritance data, the presumption must be that the dog is “innocent”.
‘…environmental factors are responsible for about 50% of the variation of the severity of hip ‘dysplasia.’Henricson B, Norberg I, Olsson E. 1966. On the Etiology and Pathogenesis of Hip Dysplasia: a Comparative Review. J Small Anim. Pract. Vol 7, 1966, pp. 673 to 688.
February 24th2017Dog World.
Mike Tempest stated that "there are various estimates of the heritability of HD that show it is on average about 30% genetic (therefore of medium heritability), 70% environmental, but this will vary from breed to breed and is dependent upon which scheme results were used in the calculations… "
October 6th, 2017. Our Dogs; Professor Steve Dean. Health Testing for Hip Dysplasia.
"Even the classic x-ray evaluation (hip scoring) has never been validated… However, just like the gene test, a specific score cannot be reliably related to the future development of clinical lameness given the assumed influence of environmental factors on the clinical symptoms. The remarkable thing is how little work has been carried out to identify the environmental factors that affect the clinical appearance of Hip Dysplasia.”
It is no wonder as breeders we are left with confusion as to what percent is predominantly genetic (so far, no genes have been identified) and what percent is environmental.
The prevailing assumption over many years has been that all abnormalities described as “dysplasia” have a genetic origin despite expert opinion all over the world for more than 50 years that this is not the case.
We are dependent for breeding guidance upon which system we use and are obliged to trust that systems applied in other countries match the one we are obliged to use when there is known to be such disparity between scoring methods. It is sad that in many cases we find that the mechanisms used fail us and thus create problems between kennels.”
(Take note, validated means never published for peer review.)
We at Pupscan understand the issues faced by many breeders when deciding on which stud dog to use. We are developing an evidence-based system that will produce a diagnosis and not a score that is left to the breeder’s own interpretation.
It is time that we had an evidence-based method in place to correctly evaluate our precious dogs and thus protect long established and healthy breeding lines. This is what the Pupscan Project intends to achieve.