Many people erroneously think that OA is due to wear and tear. This common misconception is due to the fact that OA typically does not present in younger people. Abnormal loading of joints due to poor posture may increase risk for OA, but only because of the abnormal loading of the joint. If a joint is loaded normally, there should be no OA - the coefficient of friction of a normal joint is frequently described as sliding ice on ice - it will go forever.