The phrase "floating kneecaps" refers to a condition called patellar luxation, where the kneecap moves out of its normal position and isn't properly held in place.
Sentences with «floating kneecaps»
He was recently diagnosed with luxating patella, otherwise known as floating kneecaps. (furrynationsalvation.org)
Years ago, veterinarians advised owners of dogs with floating kneecaps to prevent their pets from moving around. (healthypets.mercola.com)
Unfortunately, some of our pets experience orthopedic injuries such as cruciate repairs and luxating patellas (aka floating kneecap). (onpets.com)