Knee pain is often not directly related to an issue with the knee itself - unless of course there has been a direct injury to the knee. Knees are often caught up in between what is happening at the hip and the ankle. So both the hip and the ankle need to be looked at and their movement optimised to reduce the possible impact to the knee.
Amongst the things to consider are - good ankle mobility (pointing and flexing), pronation and supination (rolling into the arch of the foot and out of the arch), relative movements of the two lower leg bones during knee bending and straightening; tracking of the knee cap; how does the thigh bone sit in the hip socket... to name but a few. We don't just rub out where it hurts.
