[Luvtails]

I think you mean OFA? Anyways if a dog fails OFA then there is no way the same dog will pass penn hip. the only exception maybe being poor OFA positioning on a dog with tight hips. OFA is a single view with dog on it's back and legs pulled down. they look for how well a ball fits into the socket and how deep the socket is as well as the neck of the femur and other things that suggest the presence or not of HD, In Penn hip they do multiple views,including a distraction view pulling the hips out of the sockets to test laxity. the theory is that lax hips lead to dysplasia so a dog with lax hips gets a ?high? distraction index number and is not recommended for breeding. Pen Hip does not tell you that a dog fails just that it has lax hips and if you read their recommendation they don't recommend breeding certain "distraction indexes" they also rate the OFA style picture as DJD or no DJD. I have done both in the past

Look at some old pedigrees both German and US. OFA can be found way back. (20+yrs?)Back then dogs got a Very Good, Good, Dysplastic or something like that. anyways you can at least track OFA numbers even if no rating is present. a failing dog did not get a rating. With Penn Hip there is no database from which I am aware of. German dogs scores are also able to be looked up from now to many years ago. Hope this helps and I am sorry if I am not 100% correct. I am typing this from my understanding of your question