In another thread, I said that, "OFA is currently the gold standard", and you took exception saying that most of the orthopedists that you know think that PENN hip is.
Here is an article from the AAHA (American Animal Hospital Assn), that says, "[i]Currently the test regarded as the "gold standard" used to determine a dogs susceptibility to hip dysplasia is the Orthopedic Foundation for Animals (OFA) hip joint scoring system".[/i]
Here is a link to the whole article
http://www.aaha.org/blog/NewStat/post/2 ... P-OFA.aspx
.