I use a Bauerfeind brace. They make them for specific knee issues and they come in more custom-fit sizes than the regular S/M/L/XL. Like you, I use poles for descents... but with arthritis and a torn meniscus, I need more support. It is a pull-on brace, so that does involve the hassle of removing my boots to get it on/off, but I find that it helps to wear it for my entire hike (I love to bag peaks in the White Mountains!). It is designed to keep my knee cap in the proper location and prevent additional wear—my doctor recommended it. I have the one designed to help with arthritis and I highly recommend it!
... View more