A TYPICAL CREST-SHAPED SEPTAL DEFLECTION, WITH PRESENTATION OF SOME NASAL INSTRUMENTS.

In a deflected septum removed from a cadaver, the deflection was of the variety I have classified as crestshaped (Fig. 1), because the apex of its angle of convexity consisted of a sharp, cartilaginous ridge ascending upward and backward parallel to the anterior border of the vomer, but lying about three-eighths of an inch below it. This variety of deflection I regard as the fundamental deformity in nearly all nontraumatic deviations, the anatomic condition consisting of a curving over of the incisor and superior maxillary crests and the anterior portion of the vomer into the naris of the convexity, associated with an overriding of these bony parts by an extension of the septal cartilage downward and backward, the lower limit of this cartilaginous extension forming the sharp crest referred to. It is this crest with a strip of the underlying bone which is so often sawed off, with but partial