http://www.nvh.no/en/Home/News/News-stories/A-number-of-environmental-factors-can-affect-the-incidence-of-hip-dysplasia-in-dogs/
Thought I would share this as it maybe of interest to some of you :-)

Interesting but somewhat bothersome it said exercising pups in parks etc every day before the age of 3 months helped to PREVENT HD, but did not say anythign at all about for how long or how far. I can't see it helping if people start dragging 8 week old pups out for miles every day.

Does it mention a paper that has been written in relation to the study as I wonder if it gives more detail in that ?