| An anatomically shaped incus prosthesis for reconstruction of the ossicular chain. | |
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MedLine Citation:
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PMID: 10867286 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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An anatomically shaped incus replica prosthesis has been designed to reconstruct the ossicular chain. A series of in vitro studies on human temporal bones evaluated the acoustic performance of this prosthesis and compared it with a Causse partial ossicular replacement prosthesis (PORP). Pure tones in the frequency range 0. 125-8 kHz stimulated the tympanic membrane at sound pressure levels of 80, 90 and 100 dB. Measurements of the stapes footplate velocity were made with a laser interferometer. The acoustic function of the ossicular chain reconstructed with the incus replica prosthesis was found to be within 10 dB of that of the original intact ossicular chain, when both the upper and lower joints of the implant were rigidly fixed in place. It was shown that a rigid mechanical contact between the ossicular prosthesis and ossicles is a prerequisite for effective sound transmission. The anatomically shaped incus prosthesis gave a 15-dB improvement on the PORP at frequencies below 1.5 kHz. |
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Authors:
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R M Lord; R P Mills; E W Abel |
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Publication Detail:
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Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Hearing research Volume: 145 ISSN: 0378-5955 ISO Abbreviation: Hear. Res. Publication Date: 2000 Jul |
Date Detail:
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Created Date: 2000-08-09 Completed Date: 2000-08-09 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 7900445 Medline TA: Hear Res Country: NETHERLANDS |
Other Details:
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Languages: eng Pagination: 141-8 Citation Subset: IM |
Affiliation:
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Medical Engineering Research Institute, University of Dundee, Nethergate, Dundee, UK. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Acoustic Stimulation Cadaver Ear, Middle / physiopathology Humans Incus* Interferometry Lasers Ossicular Prosthesis* Ossicular Replacement Stapes / physiology Temporal Bone / physiopathology Tympanic Membrane / physiopathology |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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