The distemper vaccine was introduced in 1950 and just a few years later, the breed clubs suddenly felt the need to start doing hip clearances on breeding stock. (dogsnaturallymagazine.com)
It looked like it should have been roomy enough (and my eyes are pretty good at guesstimating hip clearance), but I felt like Houdini in a straight - jacket trying to get it on (and off). (bluecollarredlipstick.com)
Consumers need to demand hip clearances for the sire and dam of each puppy purchased. (breedingbusiness.com)