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At least 145 records · Page 8Linked to original sources
PubMed2000

[Stapes surgery in anomalies of the course of the facial nerve].

In 548 stapes operations performed in Berne during the period 1994-1998, an anomaly of the course of the facial nerve was observed in 37 cases. 29 exhibited partial prolapse of the nerve over the oval window, with or without dehiscence of the bony canal, while 5 showed total prolapse of the nerve over the oval window. In one case the nerve was duplicated round the oval window and in a further instance the facial nerve was situated over the promontory and also over the oval window. In one other case the nerve was spread widely over the oval window. Concomitant anomalies of the stapes were frequently observed. The following surgical techniques were employed: in the case of partial prolapse of the nerve, a small piston was placed in the lower part of or in the oval window, which was widened towards the promontory. In cases of total prolapse of the facial nerve the prosthesis was drilled straight into the promontory. Where the nerve was duplicated the prosthesis was placed in the footplate between the nerve branches, and where the nerve ran over the promontory and over the oval window the prosthesis was placed above the oval window. In the case where the nerve was spread widely over the oval window, no prosthesis was inserted. 78% of patients had a residual air-bone gap of 20 dB or less; in only three cases did hearing fail to improve. One patient with Crouzon disease involving a complex anomaly had a hearing impairment of 22 dB. There was no deafness, facial paralysis or vertigo with nystagmus.

Auditory Threshold↗
PubMed1969

[Stapes surgery].

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Hemorrhage↗
PubMed1996

Allograft stapes surgery for conductive hearing loss in patients with ossicular chain anomalies.

An allograft stapes was used during surgical intervention for conductive hearing loss due to ossicular malformations in 11 ears of seven patients. The external auditory canal and tympanic membrane were normal in all ears. The surgical findings for the ossicles were stapes fixation (7 ears), stapes fixation with discontinuity of the incudostapedial joint (in both ears of one patient), a deformed incus and stapes crura compressed by the facial nerve (one ear in which the stapes was not fixed) and an anomaly of the incus and stapes combined with a dermoid cyst (in one ear in which the stapes was also not fixed). In all ears, the following procedures were performed: stapedectomy followed by sealing the oval window with a vein graft and placing an allograft stapes between the oval window and the lenticular process of the incus or the handle of the malleus. The allograft stapes was placed with its capitulum on the oval window in all cases, and fibrin glue was used for stabilizing the seal and the allograft stapes. The indications for stapedectomy for conductive hearing loss due to ossicular chain anomalies and the utility of allograft stapes are discussed.

Adolescent↗