TYPES OF DEFLECTION.
The mucous membrane incisions in my method of performing the submucous or window resection vary with the type of deflection and for this reason I precede the details of the operation with a description of deflections as I have seen them, employing for them as much as possible the names in common use and grouping them according to their form.
—The double-angled deflection: This variety of deviation I have found by far the commonest. It possesses a vertical and horizontal angle, joining near the base of the septum and forming a projection on the convex side not unlike the corner of a box. The vertical angle (Fig. 1) occupies the quadrangular cartilage and ascends to a varying degree, sometimes into the perpendicular plate of the ethmoid bone. The vertical angle may jut out so strongly that it presses into the inferior turbinated body. The horizontal
FREER OT. THE NASAL SEPTUM; A DESCRIPTION OF THE AUTHOR'S PRESENT MANNER OF PERFORMING THE WINDOW-RESECTION FOR DEFLECTIONS. JAMA. 1905;XLV(14):985–999. doi:10.1001/jama.1905.52510140031001h
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