Objectives: To report normative data for incus and stapes motion using laser Doppler vibrometry (LDV) during middle ear surgery and to discuss possible limitations of the procedure.
Study Design: Institutional review board-approved, retrospective study of data from patients undergoing the Envoy Esteem implantable device at 3 institutions.
Setting: Quaternary referral health system.
Eligibility Criteria: patients sucsessfully implanted with an Esteem device.
Methods: Data from 70 patients undergoing the Envoy Esteem procedure were reviewed. Sound at 100 dB and 50 frequencies ranging from 125 to 8,000 Hz were used during the procedure. LDV was performed to measure the displacment of the body of the incus and the posterior crus of the stapes to assess whether there was sufficient ossicular mobility to allow for implantation.
Results: The average displacement of the ossicles for all 70 patients was collected and analyzed. The trend was an average displacement around 100 nm from 125 to 500 Hz for both the incus and stapes with a linear decline starting at 1,000 Hz for the incus and 500 Hz for the stapes, with slightly greater displacement of the stapes at higher frequencies.
Conclusion: This is the first article to report in vivo measures of ossicular mobility. These data help to understand the micromechanics of ossicular motion as well as the use and limitations of LDV. This information may lead to a prescreening process for implanted middle ear devices that function by overdriving the stapes.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1097/MAO.0b013e3182976528 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Short-process incudo-stapedioplasty in congenital ear malformation.
Laryngoscope Investig Otolaryngol
February 2025
Department of Otolaryngology-Head and Neck Surgery, Dentistry and Pharmaceutical Sciences Okayama University Graduate School of Medicine Okayama Japan.
Objectives: Although various stapedotomy and stapedectomy techniques exist, anchoring the piston can be challenging. We present a novel surgical approach for treating congenital stapes malformations with an atypical facial nerve trajectory.
Methods: This is a case of a 7-year-old boy presenting with bilateral conductive hearing loss.
"Ontogenetic Scaling of the Primate Middle Ear".
Am J Primatol
January 2025
Anthropology Department, University of Florida, Gainesville, Florida, USA.
The study of primate auditory morphology is a significant area of interest for comparative anatomists, given the phylogenetic relationships that link primate hearing and the morphology of these auditory structures. Extensive literature addresses the form-to-function relationship of the auditory system (outer, middle, and inner ear) in primates and, by extension, provides insight into the auditory system of extinct primates and even modern humans. We add to this literature by describing the ontogenetic trajectory of the middle ear cavity and ossicular chain (malleus, incus, and stapes) due to their critical role in relaying auditory stimuli for interpretation.
View Article and Find Full Text PDFExperimental quantification of the vibrant soundbridge stapes head (SH-) coupler in human cadaveric temporal bones.
Int J Audiol
December 2024
ENT Department, University Hospital Basel, Basel, Switzerland.
Background: The "floating mass transducer" (FMT) of the Vibrant Soundbridge was initially attached to the long process of the incus (LP). In patients missing an incus, coupling to the stapes head using the Vibroplasty CliP-coupler is used. Its main limitation is the height, leading to potential contact with the tympanic membrane.
View Article and Find Full Text PDFComparison of current staging systems for predicting pediatric cholesteatoma outcomes.
Int J Pediatr Otorhinolaryngol
December 2024
Department of Otolaryngology, University of Minnesota, Minneapolis, MN, USA; HealthPartners Medical Group, St. Paul, MN, USA. Electronic address:
Article Synopsis
- This study evaluates the effectiveness of two staging systems (EAONO-JOS and Potsic) in predicting recurrence of cholesteatoma in children with different types (congenital, primary acquired, and secondary acquired).
- Conducted from 2015 to 2023, the research analyzed surgical outcomes from 31 ears in 30 pediatric patients, examining variables like residual disease and factors like stapes erosion that might signal recidivism.
- Results indicated high rates of residual disease, particularly in congenital and primary acquired cases, and found a potential correlation between certain variables and poorer outcomes; however, limitations in the staging systems decreased the predictivity for residual disease.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!