Endoscopic ear surgery for traumatic ossicular disruptions

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Abstract

Although endoscopic ear surgery (EES) has been used to perform middle ear surgery since 1993, it has not become as common in otologic surgery as it is in endoscopic sinus surgery. This report discusses the problems and the indications for EES in traumatic ossicular disruptions in two cases. Case 1 was a 33-year-old man with a left longitudinal temporal bone fracture who presented with mixed hearing loss, with an average hearing level of 45.0 dB in the left ear. He underwent EES, which revealed incudostapedial joint disrutption. Repositioning of the incus resulted in an improvement in hearing to 18.3 dB postoperatively. Case 2 was a 30-year-old man with a right mixed hearing loss of 56.7 dB. Computed tomography showed a right longitudinal temporal bone fracture and dislocation of the incus. EES revealed dislocation of the incus and fracture of the anterior cras of the stapes. A type IV tympanoplasty was performed, interpositioning the autologous incus between the footplate and the malleus handle. Postoperatively, the average hearing level was 18.3 dB, with a 1.7-dB air-bone gap. Traumatic ossicular disruptions are considered to be a good indication for EES.

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Kobayashi, T., Ito, H., Komori, M., & Hyodo, M. (2013). Endoscopic ear surgery for traumatic ossicular disruptions. Journal of Otolaryngology of Japan, 116(12), 1320–1325. https://doi.org/10.3950/jibiinkoka.116.1320

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