I wrote this reply to Hicks thread, but thought it deserved a thread of its own so I could share my experience with all you mags.
Best knee brace bar none for skiing are the motocross asterisk braces. They are off the shelf and use an old CTI mold but have a proprietary hinge and fastening system, these two proprietary systems is what makes these braces sooooo goooood!!
So my story is that I have had my right ACL redone twice and numerous cartilage tears. In the end my knee is ACL stable, but I am a candidate for a half knee replacement, as in 2008 I had less than 10% cartilage left in half my knee.
What I find is that the G2 or whatever it is called now, and the DonJoy are too restrictive. You put them on wrong and you piss the hell out of your knee, as they only bend in one degree of freedom. They are also designed to help with knee instability, ie no MCL, ALC etc. not overall knee support. My knee is stable. I've also tried the a custom brace that removes load from one side of your knee, same result, it sucked!!
My reconstructed ACL is rock solid, its just that heavy snow, deep pow, put too much grinding on my unprotected knee. Result: one day of brace-less skiing mean 3-4 down days due to swelling and a pissed off knee.
A couple of years ago I picked up used asterisk braces here on the TGR Gear swap, took off the armor platting for the patella, and gave them a try in wet east coast POW (the worst for my knee) and magic, no pain!!! Been skiing with then ever since, and have never had to hold back knowing that these things are protecting my knees!
How it works is that these things in my opinion, fasten better to your leg than any custom made brace, once on, they do not shift or move like the custom braces do after a day of skiing, providing all day worry free protection. Next they allow for the natural motion of your knee, so they don't constrain your motion to one degree of freedom like the custom braces do, in fact the Asterisk hinge is a floating hinge that moves in all directions, up, down, left right all around. What these braces do do, is absorb an unreal amount of load away from your knee allowing for pain free skiing. So effectively, your actual knee joint in theory is only experiencing some much lesser % of the load skiing puts on your knee when wearing the brace. The only caveate I would put in is that I cannot comment how these things hold up to and ACL deficiency as they do have quite a bit of movement in the brace joint. Now if you have a torn ACL, get it fixed and you won't need a brace. However, the asterisks do provide hyper-extension protection, and I'm sure some level of pivot shift protection for the ACL, if your concerned about that.
If skiing pisses off your knees, give the Asterisk Cell a try you will not regret it! They are off the shelf, cheaper than customs, fasten much better to your leg than customs and you get a left and right brace to boot. I actually wear both of them when skiing hard, even tho my good knee doesn't need one, but I figure better safe than sorry, as I know how sorry feels!
So bottom line, reduce the load on your knees and give them some protection when ripping the large lines or hucking the big drops.
http://www.asterisk.com/
PS: i just noticed that they have redesigned the fastening system on the Cell. My above comments are on the older gurdell type fastener the Cell used to have and that the current Youth Germ Brace uses. I'm sure the new system is probably as good, in fact I'm now thinking of getting an upgrade! as the old system has all these cords dangling off the back.
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