Thanks guys! My knee has bothered me for nearly a year, but nothing terrible. I've been able to keep riding by doing some PT. Last week something popped and my knee swelled up. Now it feels very stiff and painful if I move it wrong. Doc says I will probably be back to work in 10 days. We will see! I ordered a new bike to motivate myself to get through the rehab quickly. Now I realize I will have to just stare at it for a while. lol!