Hip Stability

Hip instability is a very common problem among yogis. Most postures move forward and back, especially in beginning classes, allowing significant adduction and abduction weakness. More women than ever, especially yoginis, are requiring hip replacements at a young age. And I have weak hips that have caused IT Band and knee issues. I just came across this publication full of pelvic stabilization exercises from Princeton University. This is from the paper's introduction:

Pelvic Stabilization program is geared toward improving the function and strength of the pelvis and hip regions which will address faulty movement pattern. Lower back, hip, knee and ankle problems can be affected
by inefficient pelvic and/or hip stabilization. The body works as whole and when certain body region are inefficient, and then the body will find a way to make the movement happen using another muscle or joint in a way that was not intended. Muscles being weak or tight may contribute to the previous mentioned problems. 

The whole thing is here.