Knee problems? interesting article re a torn meniscus procedure

I'm lucky, knock on wood, with no knee problem so far, but a lot of people deal with it.

There's a revival of interest in a procedure that apparently helps "regrow" your knee. I'm no expert, just interested:

http://www.sfexaminer.com/sanfrancisco/regrow-your-knee-how-a-meniscus-implant-can-encourage-self-healing/Content?oid=2930051