I'm looking into some knee braces, that are light, not bulky, and not too restrictive. I've had an Ace Bandage on it at work, and I found that doesn't help too much, as it restricts motion and when I loosen it up it slides off. Probably going to need a custom brace that shifts weight bearing towards the healthier side of my knee.
I think having arthritis in the Knee is the worst joint to have it in, as if effects almost all of your activity as those are your major weight bearing joints. I was icing me knee for nearly a week (when I triggered the worst of my pain 3 months back) but the thing with arthritis is you can't see the swelling because it's all joint tissue within the joint that's swelling.
Man I wish there was a viable option for partial cartilage replacement.