OFA Hip Dysplasia Guidelines for Breeders www.ofa.org/hd_guidelines.html
Hip dysplasia is a genetic trait that causes an abnormal formation of the hip socket that in its most severe form can cause crippling lameness and painful arthritis. Some cases of hip dysplasia are mild and cause few symptoms however it can be so severe that young dogs require surgery in order to move without pain.
The PennHIP method is a different way to assess, measure and interpret hip joint status. It consists of three separate radiographs: the distraction view, the compression view and the hip-extended view. Dogs must be under general anesthesia to perform the evaluation procedure.
PennHip does not retain a public database of results and does not have searchable data by breed available on its web site.