A text-book of the diseases of the ear for students and practitioners . has repeatedly been observed ; sometimes the necrosisof the stapes is so complete that only the footplate remains inthe fenestra ovalis. It is a remarkable fact that this plate resistscarious destruction longer than any other part. * Cp. Atlas der Beleuchtungsbilder des Trommel/ells, p. 25. 490 DISEASES OF THE EAR In a case of exhausted middle-ear suppuration, the authorfound the crura of the stapes partly destroyed, the stumpsof which were covered with connective tissue. In anothercase—that of a woman twenty-one years of
A text-book of the diseases of the ear for students and practitioners . has repeatedly been observed ; sometimes the necrosisof the stapes is so complete that only the footplate remains inthe fenestra ovalis. It is a remarkable fact that this plate resistscarious destruction longer than any other part. * Cp. Atlas der Beleuchtungsbilder des Trommel/ells, p. 25. 490 DISEASES OF THE EAR In a case of exhausted middle-ear suppuration, the authorfound the crura of the stapes partly destroyed, the stumpsof which were covered with connective tissue. In anothercase—that of a woman twenty-one years of age who, in con-sequence of a right-sided chronic middle-ear suppuration, wasentirely deaf since childhood—the author found on histologicalexamination,* the recess of the fenestra vestibuli filled with newcystic connective tissue, the capitulum and crura of the stapesentirely wanting, and the footplate perforated at several placesby the connective tissue which had extended into the vestibule(Fig. 242). One of the rarest occurrences is necrotic exfoliation of the. Fig. 242.—Frontal Section through the Eight Pelvis Ovalis after theCessation of a Middle-ear Suppuration. /, Upper ; pr, Lower wall of the niche ; d p, Newly formed connective tissue fillingthe pelvis ovalis ; d, Epidermal covering of the connective-tissue growtli on theinner wall of the tympanic cavity; p, Base of the stapes perforated in severalplaces. entire malleus without caries of the walls of the tympanic a case of independent ostitis of the malleus reported by0. Wolf ( 0., vol. x.) the entire ossicle was washed out ofthe ear during syringing; on examination it proved to be slightlyeroded only at the head and handle ; after cicatrization ensued,no considerable disturbance of hearing was evident. Softening of the ossicles (capitulum of the stapes and crura)has been observed by A. Hartmann and Bezold; this wasprobably due to a decalcification brought about by the purulentsecretion. The suppurat
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