Those "myths" and their "debunking" are so common as marketing tools for breeders that it overshadows any accuracy these writings may contain. Breeders of crippled breeds who don't care about the well-being of dogs love using those arguments all the time. Anyway, for those actually interested in health and welfare of animals, here's a website to browse through:
[url=http://vets.tv/]British Veterinary Association[/url]
[size=18]One particularly interesting video from BVA:[/size] [url=http://vets.tv/video.php?vid=115&cid=]Vets speak out[/url]
Ladies and gentlemen, start your braingines.