I've been hearing about knees a lot lately. Who here knows some good approaches to care of the knees, especially injury prevention?
Things I've noticed: Keep the knees from bending past the toes with full weight on is a good guideline. Disperse the weight when possible by reaching the hips back or firmly engaging the entire thigh and core. the Awkward series of postures in Bikram Yoga feel effective to me in developing the knee practice, but only if given real complete concentration. There are three sections in the Bikram format, all with feet aligned under knees under hipjoints. Of course in dance there will probably be times when we don't follow these guidelines, like for Turkish drops and knee drops. In those cases, think, "disperse the weight; engage, stay lifted and light--keep the center of gravity feeling high so there is a liftedness at least to the weight pressing on the flexed knee joints.
I want my practice to strengthen the joints and tissues of my knees and make them flexible. I want to care for those tissues even while I pursue a sometimes extremely active lifestyle.

Eagle Pose too. Crossing all arm and leg joints. Opening. Releasing the toxins there.