luxating patellas Depending on what grade they are determines what problems you will most likely have. My first 2 yorkies both had them. I didnt know this until they were 8 or 9 years old. They never had any problems. They went swimming, surfing, hiking and played with a blue hand ball 24/7. I never even knew that condition existed and never had it checked. Samantha never had a problem her whole life and Amy only started to have problems like stiff legged walking when she was about 11 years old. Both girls lived to be 15. There were no health guarantees back then and I would never have given them back. They were the absolute loves of my life. Lynn |