
I think a good example of this, is my last GSD. Her mum's score was 2:2 and her sire's score was 2:4, in her five generation pedigree the highest score was 14. My girl's score was 46 (total) which was good in comparison to her sister and brother!! All pups had been reared carefully. In my case I have a friend (vet) who specialises in orthopaedics and he couldn't believe the plates when he saw them, as he had seen how carefully she had been reared. I must add that her hips never gave her a days trouble up to the age of 7 when we lost her with a brain tumour.
Her sister lived on a farm and if she heard her dad start up the tractor and the kitchen window was open, she would leap from a standing position, over the kitchen sink unit and out through the window!! I wouldn't have believed it if I hadn't seen it. she was like a gazelle. The house was approx half a mile away from where her dad's office was, and she used to run backwards and forwards carrying messages. It was lovely to see her being given a bag containing her Dad's lunch and eagerly racing off across the field. Her owners emigrated, taking her with them, and she is still fit and active at 10. When we visited, she would be given an egg box and sent down to her dad, who would fill the carton and give it back to her to bring back. Never once did she bring me a broken egg.
Enough waffling now, but the point I am making is that neither these girls showed any signs of poor hips, they both won well in the show ring, lived very active lives and unless they had been scored we would have been totally oblivious.