Mollinator, I may be completely off track, but doesn't your Rotti have SAS?
If so, then I don't think your Rotti can be classified as the perfect example.
If the breeder got the health aspect wrong, then theres a chance they got the physical aspect wrong too.
Sorry, not cow hocked, thats only the back legs. Im not entirely sure what its called for the front legs. It could be caused from her diet, past trauma or genetics, plus a couple more.
Then again, it could be just the way she's standing!