I came back from a week at the beach and snorkeling with a sore hip joint. That caused me to walk with a hitch in my step, which then turned to a sore knee. I've never had knee problems on the bike, and stayed off it this week. My local doc put me on a steroid course, which seems to have me back to normal. I'll probably try a short ride this week to test it all out.
I hope you get a non-evasive solution!