It is recommended that all PONS that are considered for breeding should have be Hip Xrayed under the BVA/KC Hip Dysplasia Scheme. Most breeders try their utmost to ensure that they breed from healthy stock thus giving puppies the best start in life, so do ensure that you always buy a puppy from a reputable breeder who should be able to answer any concerns you may have and will continue to be there to help with any queries you may have.
We do not yet know the incidence of Hip Dysplasia in PONS but it appears to be low. Whilst many dogs can live a totally normal life with this disease in its lesser degree, some may have a painful existence and a few may need operating on for any chance of a decent life. There is no way to eradicate CHD, it is polygenetic and can occur even if both parents have low hip scores, but the occurrences can be minimized by regular testing using the BVA Scheme. Management of diet, exercise and the environment can also impact on a dog's hip score, as well as genetic factors.
The British Veterinary Association (BVA) has a comprehensive scoring system. An x-ray is taken of the dogs hips, and they are scored by a panel of vetsat the BVA. Each hip has it' own score, and the two are added together to get the total.
In the UK, each hip can score between 0 to 53, 0 is the best score and 53 the worst. When these are added together to get the total, this is the score used by BVA to calculate the 'Mean' score for each breed. The club accepts scores from official oversea's schemes.
The breed average for each breed of dog will vary, and at the time of writing the breed average for the PON is 16, the 5 year mean average for the last 5 years was 12.
Obviously, with a small gene pool in the UK, other factors may allow the use of a dog with a higher score . For instance, If the dog is bringing in new lines to our gene pool, is of very good character and good breed type and also comes from lines with good hip scores, then consideration may be given to put it to a dog/bitch here that has a low score.
In a numerically small breed sense has to be used to maintain the overall health and vitality of the breed. When considering hip scores in breeding, if the score of the proposed dam is over the breed average then the breeder must use a sire with a score under the breed average.