A text-book of the diseases of the ear for students and practitioners . atedly tamponing the cavity with iodoformgauze. ? :/? .;::..;:•.: :.: * The opening of the mastoid process with the burr is still performed byonly a few surgeons. Macewen of Glasgow, to whom we are indebted for themasterly manner in wK?eh he has developed, brain- surgery, uses for hismastoid operations knob-shaped burrs of different sizes. .... _:. 512 DISEASES OF THE EAR It has already been mentioned that in the majority of casesoperated on by the author, no communication existed between theabscess in the mastoid process
A text-book of the diseases of the ear for students and practitioners . atedly tamponing the cavity with iodoformgauze. ? :/? .;::..;:•.: :.: * The opening of the mastoid process with the burr is still performed byonly a few surgeons. Macewen of Glasgow, to whom we are indebted for themasterly manner in wK?eh he has developed, brain- surgery, uses for hismastoid operations knob-shaped burrs of different sizes. .... _:. 512 DISEASES OF THE EAR It has already been mentioned that in the majority of casesoperated on by the author, no communication existed between theabscess in the mastoid process and the mastoid antrum. When,in these cases, the bony wall in the direction of the antrum was ofnormal consistency, the author has never tried to make a com-munication between the abscess cavity and the mastoid antrum. If one is convinced that the abscess cavity is thoroughlyscraped out after having used the smallest sharp spoon, andsatisfied, with the aid of the probe and sharp spoon, that thecavity in a direction inwards and forwards towards the antrum is. Fig. 258. bounded by resistant, healthy, bone tissue, the cavity is tam-poned with iodoform gauze without previous irrigation. In orderto make the wound somewhat smaller, several sutures are placedin its superior and inferior extremities, the number of whichdepends on the loss of substance in the bone. In superficialabscesses with slight loss of bone substance, the wpund maybe sutured immediately after the operation after having lightlydusted the parts with iodoform (Gruber). When there is a largeabscess cavity it is not advisable to allow the wound to close upby primary union, because, when extensive softening exists, piecesof diseased bone may occasionally be retained, which would makeit necessary to repeatedly scrape out the cavity during the after-treatment. APPLICATION OF THE BANDAGE 513 The Application of the Bandage.—After the abscess cavity hasbeen tamponed with iodoform gauze, and a strip has been introducedint
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