Biomechanics is the science used to identify and compensate for irregularities in the skeleton. If the skeleton is misaligned for whatever reason then it is unlikely that the structure will be able to support itself as intended.
Uneven and rapid wearing can take place throughout the body. Poor alignment of the lower back, feet and legs will produce wear and tear to other parts of the body including muscles and tendons caused by poor functional position.
Once your feet are realigned you should be able to walk better, the rest of your body, especially the knees, hips and spine can function more efficiently.