Maybe the knees are not directly underneath the pelvis. Most likely it is a combination of all these structural distortions. I know this is likely the case because the body is not made up of a bunch of isolated parts, but instead functions as a whole unit. I mean that if there is a problem with the structure in any part of your body, the rest of your body will have to adjust itself, structurally, to balance out the original problem. We must balance ourselves in this way, because human beings must function within the force of gravity.
Gravity forces our body to function as a unified whole.
Our ability to balance ourselves within gravity determines our relationship with this force. Our relationship with gravity actually determines whether gravity feels heavy or light in our bodies. Our ability to balance ourselves is determined by our posture, or a better way of putting it our body's structure and how we use it. So you see, structure is actually pretty important to our quality of life. Structure determines the effects of gravity on your body by determining your relationship with gravity.