Postinflammatory Acquired Atresia of the External Auditory Canal: Treatment and Results of Surgery Over 27 Years

Becker, Birgit; Tos, Mirko

doi:10.1097/00005537-199806000-00021

Cited by 67 publications

(77 citation statements)

References 14 publications

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“…These authors found that the number of ears with a post-operative air-bone gap of less than 20 dB declined from 90 per cent at primary follow up to 61 per cent at 5 years. 12 The present series, smaller in size but representing the longest follow-up period reported to date, found a similar outcome: the proportion of ears benefitting from surgery (i.e. having an air-bone gap of less than 20 dB) progressively declined from 93 per cent to 55 per cent over a mean period of 5 years 5 months.…”

Section: Discussionsupporting

confidence: 70%

Postinflammatory medial meatal fibrosis: early and late surgical outcomes

Ghani

Smith

2013

J. Laryngol. Otol.

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Section: Discussionsupporting

confidence: 70%

Postinflammatory medial meatal fibrosis: early and late surgical outcomes

Ghani

Smith

2013

J. Laryngol. Otol.

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“…Its incidence has been estimated at 0.6 cases per 100,000 [1] . It has different names in literature such as post-inflammatory medial meatal fibrosis [2,3] , post-inflammatory medial canal fibrosis [4] , post-inflammatory acquired atresia [5] , canal atresia [6] , and stenosis of the external auditory canal [7] .…”

Section: Introductionmentioning

confidence: 99%

Management of Acquired Atresia of the External Auditory Canal

Bajin¹,

Yılmaz²,

Günaydın³

et al. 2015

Int Adv Otol

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OBJECTIVE:The aim was to evaluate surgical techniques and their relationship to postoperative success rate and hearing outcomes in acquired atresia of the external auditory canal. MATERIALS and METHODS:In this article, 24 patients with acquired atresia of the external auditory canal were retrospectively evaluated regarding their canal status, hearing, and postoperative success. RESULTS:Acquired stenosis occurs more commonly in males with a male: female ratio of 2-3:1; it seems to be a disorder affecting young adults. Previous ear surgery (13 patients, 54.2%) and external ear trauma (11 patients, 45.8%) were the main etiological factors of acquired ear canal stenosis. Mastoidectomy (12/13) and traffic accidents (8/11) comprise the majority of these etiological factors. Endaural incision is performed in 79.2% and postauricular incision for 20.8% of cases during the operation. As types of surgical approach, transcanal (70.8%), transmastoid (20.8%), and combined (8.4%) approaches are chosen. The atretic plate is generally located at the bony-cartilaginous junction (37.5%) and in the cartilaginous canal (33.3%); the bony canal is involved in a few cases only. Preserved healthy canal skin, split-or full-thickness skin grafts, or pre-or postauricular skin flaps are used to line the ear canal, but preserved healthy canal skin is preferred. CONCLUSION:The results of surgery are generally satisfactory, and complications are few if surgical principles are followed.

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“…Whereas it is recognized that the incidence of aural atresia is relatively low, with an estimated annual incidence of 0.6 cases per 100,000 inhabitants [26], the estimated number of new cases per year in the United States is 2,000, which is not an insignificant number. It is also likely that veterans with hearing damage resulting from blast injuries will have a significantly higher incidence of acquired aural atresia as a result of damage to the ear and related surgical intervention.…”

Section: Discussionmentioning

confidence: 97%

Sound transmission by cartilage conduction in ear with fibrotic aural atresia

Morimoto¹,

Nishimura²,

Hosoi³

et al. 2014

J Rehabil Res Dev

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Abstract-A hearing aid using cartilage conduction (CC) has been proposed as an alternative to bone conduction (BC) hearing aids. The transducer developed for this application is lightweight, requires a much smaller fixation force than a BC hearing aid, and is more convenient to use. CC can be of great benefit to patients with fibrotic aural atresia. Fibrotic tissue connected to the ossicles provides an additional pathway (termed fibrotic tissue pathway) for sound to reach the cochlea by means of CC. To address the function of fibrotic tissue pathway, BC and CC thresholds were measured in six ears with fibrotic aural atresia. The relationship between the CC thresholds and the results of computed tomography was investigated. In the ears with the presence of a fibrotic tissue pathway, the CC thresholds were lower than the BC thresholds at 0.5 and 1.0 kHz. At 2.0 kHz, no significant difference was observed between the BC and CC thresholds. The current findings suggest that sound in the low to middle frequency range is transmitted more efficiently by CC via a fibrotic tissue pathway than BC. The development of hearing devices using CC can contribute to rehabilitation, particularly in patients with fibrotic aural atresia.

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Postinflammatory Acquired Atresia of the External Auditory Canal: Treatment and Results of Surgery Over 27 Years

Cited by 67 publications

References 14 publications

Postinflammatory medial meatal fibrosis: early and late surgical outcomes

Postinflammatory medial meatal fibrosis: early and late surgical outcomes

Management of Acquired Atresia of the External Auditory Canal

Sound transmission by cartilage conduction in ear with fibrotic aural atresia

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