osteoarthritis
"I have osteoarthritis in my right knee, and I run.  I also get IT band pain.  So sometimes, I am so stiff and achy either from running, or just because.  I get super stiff behind my knee, and it makes it hard to even walk, or straighten my leg all the way.  I take ibuprofen, I ice it...and that helps some.  I woke up this morning with it being extremely stiff behind my knee.  I applied Pennsaid all over the back and front of my knee.  No kidding - within 5 minutes, most of that stiffness is GONE.  I am in shock.  And if you have knee pain, you know how debilitating it can feel.  This stuff is INSANE - in a good way!!  I'm so glad I have it.  I literally can't believe how much it helped me.  And no, I don't work for a pharmaceutical company."