Stick That Landing
Knee injuries. The bane of court and field sports.

Deceleration. How to slow down, land, and change direction while speeding up.
This is a skill which must be practiced over and over.
Learning how to land is critical.
Here is a great article on landing for gymnasts, but it applies to all athletes.
The take home point are:
1. Learn to squat.
2. Learn to apply the squat stance to two- and one-legged landings.
3. Practice deceleration.
4. Use a video camera to learn exactly what you are doing and fix it!