Forcible manipulations accomplish relief from joint pain and stiffness by the rupture of adhesions, or by the reduction of a displaced fibrocartilage in internal derangement of joints, as in the knee, wrist, or jaw. This important form of therapy is being neglected by members of the medical profession who should become familiar with the methods of manipulation. Unintelligently applied force is inherently a dangerous means, and the use of extreme force is always to be condemned. The public, and many physicians as well, has been led to believe that treatment by manipulation is not included in the resources of the qualified physician or surgeon. There is nothing mysterious in the art of the bonesetter, and the rationale of so called bonesetting in the indicated case is readily understood when we review our knowledge of the anatomy and pathology of joints. By careful observation of our patients and the recording of our results we can put this procedure on a rational basis.