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footplate

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Book Chapter
Series: Advances in Oto-Rhino-Laryngology
Volume: 69
Published: 07 July 2010
10.1159/000318520
EISBN: 978-3-8055-9471-4
... preparation of a radical cavity, the floating mass transducer was coupled to the stapes footplate. The transducer was stimulated with 50 mV multisinus signals and inner ear fluid vibration was measured using a microphone in the round window niche. Several coupling conditions were simulated with mass...
Book Chapter
Book Chapter
Book Chapter
Book Chapter
Series: Advances in Oto-Rhino-Laryngology
Volume: 65
Published: 22 January 2007
10.1159/000098793
EISBN: 978-3-318-01343-6
... Abstract Since 1958, stapedotomy has been the method of choice for middle ear surgeons whooperate on patients suffering from otosclerosis, especially stiffening of the interface betweenthe stapes footplate of the middle ear and the oval window, which is a part of the cochlea ofthe inner ear...
Book Chapter
Series: Advances in Oto-Rhino-Laryngology
Volume: 65
Published: 22 January 2007
10.1159/000098838
EISBN: 978-3-318-01343-6
... unpredictable risks such as uncontrolled stapes fracturing, luxation ofthe stapes or creating a floating footplate, which all can cause hearing loss or even deafness.The worldwide use of the small-fenestration techniques led to the observation that mostcases of sensorineural hearing loss occurring after surgery...
Book Chapter
Series: Advances in Oto-Rhino-Laryngology
Volume: 81
Published: 07 May 2018
10.1159/000485545
EISBN: 978-3-318-06315-8
... have some small mechanical advantage; however this is not clearly proven. Similarly, there is no proven advantage in reconstructing to the stapes head instead of the footplate. The most important factor for good long term results is probably the stability of the prosthesis, both to acute inertial...
Book Chapter
Series: Advances in Oto-Rhino-Laryngology
Volume: 69
Published: 07 July 2010
10.1159/000318519
EISBN: 978-3-8055-9471-4
... on the stapes footplate. Six patients were implanted with this device. Results: Acoustic results demonstrate significantly improved gain, especially in the high frequencies, which is typically unobtainable by conventional hearing aids. Conclusion: The simple procedure of placing an active TORP assembly...
Book Chapter
Series: Advances in Oto-Rhino-Laryngology
Volume: 65
Published: 22 January 2007
10.1159/000098677
EISBN: 978-3-318-01343-6
... the viral proteins by immunohistochemistry and antimeasles immunoglobulin G inthe perilymph samples. Nucleic acid (mRNA, vRNA, DNA) was extracted from pulverized,frozen stapes footplate samples of otosclerotic patients. Measles virus RNA was amplifiedby RT-PCR: reverse transcription and the first-round PCR...
Book Chapter
Series: Advances in Oto-Rhino-Laryngology
Volume: 81
Published: 07 May 2018
10.1159/000485579
EISBN: 978-3-318-06315-8
..., anomalous footplate, and can occur after head trauma or barotrauma, chronic inflammation, or in otic capsule dehiscence. This clinical entity was initially proposed more than a century ago, yet it has remained a topic of controversy for more than 50 years. The difficulty of making a definitive diagnosis...
Book Chapter
Series: Advances in Oto-Rhino-Laryngology
Volume: 65
Published: 22 January 2007
10.1159/000098661
EISBN: 978-3-318-01343-6
... performed the first modern stapedectomy using a Teflon stapes replacementprosthesis. Since then, numerous surgeons worldwide have used this procedure with greatsuccess. Many of them have contributed towards progressively refining the surgical techniques,e.g. by changing the total removal of the footplate...
Book Chapter
Series: Advances in Oto-Rhino-Laryngology
Volume: 65
Published: 22 January 2007
10.1159/000098668
EISBN: 978-3-318-01343-6
... within the otosclerotic focus. Stapes footplates from 30 patientswith clinical otosclerosis undergoing stapedectomy were formalin fixed, decalcified andparaffin embedded. As controls, 30 autoptic temporal bone specimens were employed. Weinvestigated the expression of collagens I-V...
Book Chapter
Series: Advances in Oto-Rhino-Laryngology
Volume: 65
Published: 22 January 2007
10.1159/000098671
EISBN: 978-3-318-01343-6
.... The otosclerotic stapes is characterized by a typicalirregular pattern. Histological examination of the stapedial footplate or its fragmentsshowed three types of otosclerotic lesions: fibrotic, sclerotic, and spongiotic. Our observationscould support the hypothesis that otosclerosis is not a static disease. ...
Book Chapter
Series: Advances in Oto-Rhino-Laryngology
Volume: 65
Published: 22 January 2007
10.1159/000098791
EISBN: 978-3-318-01343-6
.... These large movements, which are caused bythe missing attachment of the piston to the annual ligament, may explain why a short pistoncan be lifted out of the footplate perforation (e.g. after sneezing) or a piston with excessivelength might come into contact with the membranous labyrinth, causing vertigo...
Book Chapter
Series: Advances in Oto-Rhino-Laryngology
Volume: 65
Published: 22 January 2007
10.1159/000098801
EISBN: 978-3-318-01343-6
... Abstract Several modifications have been introduced during the 35 years following the firststapedectomy. The size of the footplate fenestration into the vestibule defines the type of thesurgical technique, varying from total stapedectomy to partial stapedectomy or small fenestrastapedotomy...
Book Chapter
Series: Advances in Oto-Rhino-Laryngology
Volume: 65
Published: 22 January 2007
10.1159/000098827
EISBN: 978-3-318-01343-6
... was performed on 14 ears of 11 OI patients who presented with conductiveand/or mixed hearing loss. Pathological findings included atrophy and/or fractures ofthe stapedial crura in combination with thickening and fixation of the stapes footplate andhypervascularity of the promontory mucosa. All the patients...
Book Chapter
Series: Advances in Oto-Rhino-Laryngology
Volume: 65
Published: 22 January 2007
10.1159/000098840
EISBN: 978-3-318-01343-6
... Abstract Objective: In order to further optimize the surgical technique with the CO 2 laser instapes surgery, a scanner system was used to obtain a footplate perforation of 0.5-0.6mmwith only one laser application (‘one-shot’ stapedotomy). Study Design: 240 patients withotosclerosis were...
Book Chapter
Series: Advances in Oto-Rhino-Laryngology
Volume: 65
Published: 22 January 2007
10.1159/000098841
EISBN: 978-3-318-01343-6
... in the footplate was performed randomlyeither with the skeeter drill or with the CO 2 laser. Preoperative bone conductionthresholds were compared with the postoperative levels (day 2-3, week 2, week 6 and month 6)in all patients. Evolution of the bone conduction was compared for the two studied subgroups(laser...
Book Chapter
Series: Advances in Oto-Rhino-Laryngology
Volume: 65
Published: 22 January 2007
10.1159/000098842
EISBN: 978-3-318-01343-6
... surgical procedure to reoperation varied from 1 to 8 years.Conclusions: (1) The most common indication for revision stapes surgery in patients aftertotal stapedectomy was prosthesis displacement and necrosis of the long crus of the incus. (2)Obliteration of the stapes footplate after small fenestra...
Book Chapter
Series: Advances in Oto-Rhino-Laryngology
Volume: 65
Published: 22 January 2007
10.1159/000098851
EISBN: 978-3-318-01343-6
... and subsequently tested in a clinicaltrial. We report on the most frequent causes that led to revision surgery such as adhesions,prosthetic problems, erosions of the long process of the incus, or refixation of the footplate,and on the different surgical techniques. In a first series of patients with a conductive...