I tore my lateral and medial meniscus. Not sure how much, but I'm in pain all the time. I got this knee brace because I believed the hinges would help my knee not go left/right (a.k.a, the wrong way) when walking. It doesn't happen very often, but it's extremely painful and something I would rather not occur.Anyway, I measured my knee and it just happened to be in the "small" size range. I decided to get a medium because I had read reviews in which people had said to get one size up. I'm glad I got the medium, but the bottom part is tight on my leg (below the kneecap) as is. I don't think the small would have fit at all. I'm 6ft 3, and I weigh about 180 pounds. So, I'm rather tall and skinny.I've only had this product about a day, but when I put it on it feels absolutely amazing. My only problem with it is since it helps keep my knee somewhat straight when walking, I find it feels a little odd. I don't walk like a normal person...more like a penguin (or so I'm told). But, I've been pain free all day and I'm going to keep using it and see how it goes.I'm not going to give it 5-stars yet until I've had more time with it, however. (But, right now, I love it!)EDIT 12/7/2011: I've been using this brace for about a week, and I can tell you it's STILL amazing. I've found myself thinking about not wearing it because there's no way it hurts so much without it. Seriously. But, I still wear it because after a long day, my knee will start aching a little. Not enough to make me worried, but enough to remind me.And, of course, it doesn't help with the stiffness I get when I sit for too long. But, overall I would recommend this to anyone with meniscus problems. I can't recommend this product for ACL, PCL, or MCL problems, as mine are fine...as far as I can tell.
Rating: [5 of 5 Stars!]