Sorry to about the tendonitis, sending healing vibes. I just got over a nasty dose of it myself, in my lower back/hips. My holistic-minded doc suggested I try ginger, very good for helping the body heal from inflammation. You might want to get yourself a nice big "hand" of ginger root and use it inside and out. Inside - by way of tea & adding it to stir-fries or whatever ya got cooking. Outside - you could make a strong infusion and saturate a washcloth to lay on your poor knee when you're resting it. I even added a tiny dash of cayenne, which is great for pain relief. It really helped keep me comfortable, and got me back on the bike in a very short time.

I don't think these uses could have any ill effects. I bet it's EXACTLY the people who worry that they're not working hard enough who come down with tendonitis. We push further than we should to prove we're not slacking, and yeow!!

And oh yeah, there's also chocolate covered crystalized ginger...