Did not work for me either. Do use a small stretchy sleeve called "Healing Tree" that is much less invasive than a brace. Honestly don't know if it helps or not.
A few things not mentioned that do help:
1-A rowing machine daily that is good for upper body exercise, but also flexes the knees without their being weighted. This seems to help a lot.
2-An exercise where you put your palms against a wall or bar, bend one knee, and project the other back as far as you can with the foot flat on the floor. This stretches the muscles on the bottom rear of the leg where pain often develops from knee issues. Done daily, it greatly reduces and prevents pain in my muscles just below the knee. See a physical therapist at least once to get it right.
3-Annual shots of hyaluronic acid in the knee, sometimes preceded by removal of some of the joint fluid. I do this every spring before starting backpacking, and it helps greatly all summer.
4-Sam-E, 400mg, from NatureMade. Try to avoid it, but when the more degraded knee gets painful right at what's left of the menisci, and won't come around for several days, I do a bubble pack of 6 for six days. Risky, but has always worked. My Dr. is OK with this.
Also use Osteo Biflex, CVS Reparagen, and an NSAID, Nabumetone (easier on the stomach), but as little as possible, and usually for other types of arthritic issues, not meniscal damage. It does help while backpacking taken after dinner for knee pain while sleeping.
Won't say my knee was injured because nothing out of the ordinary happened. Was just making a moderate ascent on a good trail above timberline and the knee started to grate like a rusty gate. But with all the above and much more, it took a year or so to backpack again, and several years more before didn't have to spend at least an hour daily working on the knee. Some providers told me that the meniscal damage would never heal, and a replacement was the only answer. Still functioning without one, but it does take considerable time and must not be rushed. A good friend, who rushes everything, ended up with double replacements. Could never persuade her to take it easy. But she's doing OK now, and may get back on the trail again.