. Local and regional anesthesia : with chapters on spinal, epidural, paravertebral, and parasacral analgesia, and on other applications of local and regional anesthesia to the surgery of the eye, ear, nose and throat, and to dental practice. Fig. 201.—Schematic representation of the trigeminal axis and the direction the needleshould take to the gasserian ganglion: a, Normal type. The long axis of the bony canalof the foramen ovale and the inclination of the petrous bone lie in the direction A, B; b,occasional variation. The long axis of the bony canal of the foramen ovale A, B standsmore steep
. Local and regional anesthesia : with chapters on spinal, epidural, paravertebral, and parasacral analgesia, and on other applications of local and regional anesthesia to the surgery of the eye, ear, nose and throat, and to dental practice. Fig. 201.—Schematic representation of the trigeminal axis and the direction the needleshould take to the gasserian ganglion: a, Normal type. The long axis of the bony canalof the foramen ovale and the inclination of the petrous bone lie in the direction A, B; b,occasional variation. The long axis of the bony canal of the foramen ovale A, B standsmore steeply than the inclination of the petrosa C, D. (Hartel.) The question is of importance as to how deeply we may go intothe foramen ovale with the needle. We must, therefore, measure the. Fig. 202.—Projection upon the upper jaw of the different axes of entrance to theforamen ovale, showing their variability: a, Medium steep; b, flat; c, steep; d, overflat;e, oversteep. (Hartel.) distance between the superior margin of the pyramid of the petrousportion of the temporal bone and the posterior inferior margin of the 540 LOCAL ANESTHESIA foramen ovale, and we find (Table II, No. 6) a minimum of 14 mm., amaximum of 23 mm., and an average of 19 mm. The minimum (
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanesthe, bookyear1914
