. 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. te of the pterygoid process near its base (). It will be seen, from a reference to the position of these parts,that the foramen ovale lies directly back of the base of this plate andon the same anteroposterior plane, consequently the depth to theexternal plate at its base is the depth to the foramen ovale, but on aslightly posterior plane, about 1 c
. 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. te of the pterygoid process near its base (). It will be seen, from a reference to the position of these parts,that the foramen ovale lies directly back of the base of this plate andon the same anteroposterior plane, consequently the depth to theexternal plate at its base is the depth to the foramen ovale, but on aslightly posterior plane, about 1 cm. Having now determined thedepth from the surface necessary to penetrate, this is marked on the THE HEAD, SCALP, CRANIUM, BRAIN, AND FACE 563 needle, which is partially withdrawn, and the point redirected slightlybackward, in which direction it is advanced to the determined the nerve is reached this is recognized by the usual paresthesiaalong its branches. The method of Ojferhaus is a decidedly ingenious and valuable acqui-sition. To him is due the credit of attempting the first time to locatethe relative positions of the foramina ovale and rotundum by ana-tomic measurements made on the base of the skull. This method aims. j Foramen ovate Fig. 223.—Lateral routes of injection for foramen ovale: 1, Offerhaus; 2, Braun. (Braun.) to make the injections immediately beneath the foramina, reachingthe nerves just as they leave the openings, at their approximately de-termined depth from the surface. This method, when applied withsome judgment, making allowances for anatomic variations in individ-ual cases by slightly manipulating the point of needle until it comes incontact with the nerve, which is recognized by the characteristicparesthesia along its branches, will be found to be a highly useful andvaluable procedure. 564 LOCAL ANESTHESIA In a study of 50 skulls Offerhaus found that the distance betweenthe foramen ovale is approximately the distance from the two outersur
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanesthe, bookyear1914
