Pennhip Vs OFA - German Shepherd Dog Forums
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post #1 of 4 (permalink) Old 01-09-2018, 10:50 AM Thread Starter
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Pennhip Vs OFA

Any opinions on which is better/more accurate? I know I can do pennhip any time after 16 weeks and OFA is 2 years old, unless I just do prelims. I would like to get Zelda's hips checked before my daughter starts agility this spring, but I don't want to have to do OFA's twice. Is pennhip really accurate in a younger dog?

BTW Zelda will be 1 February 26th.

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post #2 of 4 (permalink) Old 01-09-2018, 11:05 AM
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I like both. I like the fact that you don't have so much "opinion" with Penn Hip. I know people that have sent (as a test) the same dog's x-rays to OFA with 2 different registration numbers on them and got 2 different ratings. Many people don't know what Penn Hip is, so for breeding dogs, I would do both. Or you can send to German at 1 for A stamp at 1 year. Don't ask me how you do
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post #3 of 4 (permalink) Old 06-04-2019, 03:41 PM
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Pennhip focuses on hip laxity, while OFA and the SV (Germany) focus on the development of the hip joints themselves (i.e. shallow sockets, malformations, etc.). The SV will usually accept OFA X-rays, but you may get slightly differing results from the two organizations.
This shows an approximate conversion of the ratings between the organizations

Most GSD breeders (especially in Germany) don't accept the Pennhip because it can be done when the dog is only 4-6 months old. The claim here is that the dog's hips will continue to tighten up as it matures.

There have been many documented cases of dogs that passed OFA or SV with good results but still developed arthritic hips (probably due to excessive laxity IMO). However, there are some claims of dogs with poor PennHip scores at 4-6 months, but good OFA/SV scores, not developing arthritic hips.

There is not much research or documentation on the long term hip health of dogs that scored poorly with PennHip, but good on OFA/SV. I'm actually conducting a study on this so GSD owners can be more informed on both methods - see link for more details
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post #4 of 4 (permalink) Old 06-05-2019, 08:06 AM
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Pennhip has shown to decrease laxity when breeding partners with tight hips are breed, but it hasn't done anything to reduce the rate of hip dysplasia.
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