Over time, this kind of posture can pinch nerves all over the body, impair blood flow and cause fatigue. Releasing all of the musculature and learning to keep muscular holding patterns at bay will eventually eliminate both problems. Please understand that any dysfunction in your pelvis will create a dysfunction in your legs and in your spine through muscular attachment . Any dysfunction in your spine, must create a dysfunction in your ribcage, shoulder blades, arms, neck and head. A problem in your legs is a problem in your arms, in your neck, in your guts.
Every problem is a full body problem and can only be fixed by treating the whole body.
On this note, we should probably take a moment to discuss the musculature of the knees. A few of the muscles that attach to the pelvis also cross the knee joint. Therefore it is important to have your knees properly aligned if you want to align the pelvis. The hamstrings attach to the pelvis and cross the knee joint. The quadriceps cross the knee joint as well.