Journal of ophthalmology, otology and laryngology . de of which, B C, repre-sents the distance from the spina supra meatum to the antrum, fifteenmm. (after Holmes), the top of which, D C, represents the distance 458 J Thrombosis of the Lateral Sinus. from the posterior wall of the meatus to the antrum, one and five-tenths mm. (after Bezold, two mm. and less), and the base of whichrepresents the distance of the anterior border of the opening E fromthe anterior border of the posterior wall of the meatus L>, for whichdistance, E B, I allowed one and five-tenths mm., which allowancecan certainl
Journal of ophthalmology, otology and laryngology . de of which, B C, repre-sents the distance from the spina supra meatum to the antrum, fifteenmm. (after Holmes), the top of which, D C, represents the distance 458 J Thrombosis of the Lateral Sinus. from the posterior wall of the meatus to the antrum, one and five-tenths mm. (after Bezold, two mm. and less), and the base of whichrepresents the distance of the anterior border of the opening E fromthe anterior border of the posterior wall of the meatus L>, for whichdistance, E B, I allowed one and five-tenths mm., which allowancecan certainly not be considered as too liberal. For the second part ofthe base, E A, I allowed twelve mm., the largest diameter, accordingto Schwartze. If we connect A and D and draw the perpendicularfrom B on A D, we find that this perpendicular, B F, has the length ofabout ten and six-tenths mm. I do not think we go much out of theway when we regard a lateral sinus displaced forward if it approachesthe supra meatal spine more than ten and six-tenths mm. D C. A. E B If we allow for B E seven and one-half mm., F B is about twelveand one-half mm., and if we allow for E A ten mm., F B is abouttwelve mm. The latter distance corresponds to that of Held. In this connection I may add that the finding of this lateral sinushas been made easier for me by applying the method described by mein the Journal of the American Medical Association, of May 19, called attention to the fact that in adults an easily accessible portionof the lateral sinus may be found when we open that part of themastoid process which is located in the direction of the line whichdivides into two halves the angle formed by the temporal line and theanterior border of the mastoid process (an angle of about 1150 in 459 Emil Amberg. adults). In the Medical Record, October 22, 1910, I published a guidefor the lateral sinus line for adults. One shank should be held over the anterior border of the mastoidprocess, the other over t
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