This is an aching pain and/or feeling of stiffness, weakness, and instability around the knee. Pain increases during certain motions like going up or down stairs.
Misalignment of your feet creates excessive pressure on your knee joints. The knees will bend inward or outward with every step, depending on the alignment of your feet.
The knees are not designed to take on this pressure consistently, and will start to damage certain areas, resulting in injury.
Knee pain is directly due to misalignment at the feet. An imbalance of stabilization at the feet creates a chain reaction of imbalance throughout the rest of the body. For example, the drop of the arch on your left foot will cause your knee to rotate inward. This causes pain on the outside of the knee.
An insole designed to stabilize your foundation will balance your alignment and relieve the pain.