Sounds like Jackson! He also had just turned 1. I started this thread when it happened to him:
http://www.yorkietalk.com/forums/yor...some-help.html
I thought it was going to be LP (luxating patellas) since it's so common in the breed but it ended up being Lymes disease! Crazy, right?! She put him on pain meds for 7 days and lyme medicine for a month and he stopped limping 12 hours after medicine and hasn't limped since!