Allowing knees to rotate inward during movement can contribute to knee pain. You can use your own leg muscles to quickly normalize knee position to neutral and aligned with feet (straight forward) and keep them there for all you do. It becomes habit and gives built-in knee and leg muscle strengthening. Note how the arch of the foot lifts also to more neutral and level position, rather than flattened. Fix rotated knees in easy, comfortable motion that does not hurt or force at any time. Thank you to Steve Kramer for adding symbols indicating good and bad position.