This method radiographically assesses the laxity of the hip joint and predicts the likelihood of the dog developing HD. Puppies as young as 16 weeks can be assessed which makes it a useful system for selecting breeding stock.
Now known as Canine Health Information Center:
Assessment as per BVA, dogs must be a minimum of 24 months for examination. 7 levels of Dysplasia are defined.
Assessment as BVA, scores A-1 to E.