The fractured coccyx may be absorbed, or may be reankylosed in a proper position or in a new abnormal position, or may remain loose and movable. ADJUSTMENT OF CURVATURES We have previously discussed in detail the nature and discovery of curvatures. A few words should be said here about their correction. If the sole object of the adjustment is to correct the curvature it is best to select for adjustment those vertebrae which are most subluxated in the direction of the curvature. According to the length of the curvature a series of from two to six, separated by some distance, are chosen. These are adjusted until they cease to be the most prominent ones in the curvature and then others, then most prominent, are chosen and adjusted until they in turn cease to be most prominent. In this way the curvature may eventually be straightened, or nearly so. It is doubtful if any curvature can be absolutely eradicated, although it may be straightened until unnoticeable except by the expert. To overcome a curvature it may be necessary to break every rule which governs ordinary adjusting and to invent new ways of placing the hands or of delivering force. No two require exactly the same measures and he is most successful with curvatures who is most adaptable to changing conditions. One rule may be safely laid down. Do not alternate from day to day, loosening at the same time many vertebrae, but choose the ones most in need of adjustment and _follow your choice_ as long as it is indicated. The chief vertebra is nearly always the one at the _angle_ or _point_ of the curvature. The sharp, angular curve of Potts’ Disease, involving two or three vertebrae, should warn against adjustment, usually, since in this disease the vertebrae are fragile and easily fractured. If a case has not progressed too far a cure may be effected, but great caution in taking such cases must be exercised. Every Chiropractor should be well informed on the diagnosis of Potts’ Disease, or spinal caries. Many months are usually required for the straightening of a curvature--how many can scarcely be estimated in advance of the experiment with any case. Often the case which seems simplest requires the longer time, while a very pronounced curvature, as in some cases of rachitis, may yield in a few months. PREFERABLE ADJUSTMENTS The selection of the move with which to correct each subluxation depends upon the adjuster’s concept of the _kind_ and _direction_ of the subluxation and of the mechanics of the different corrective moves in his repertoire. The move used should be one in which the application of force is exactly along opposite lines to the lines of force which originally produced the subluxation.