Titanium prostheses versus stapes columella type 3 tympanoplasty: a comparative prospective study

Bahmad, Fayez; Perdigão, Andréa Gonçalves

doi:10.1016/j.bjorl.2020.07.014

Cited by 2 publications

(1 citation statement)

References 23 publications

(69 reference statements)

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“…The four types of reconstructed middle ears are as follows: 1) Type III c , which interposes a short columella between the stapes head and the TM; 2) Type III i-M , which interposes a short columella between the stapes head and the manubrium; 3) Type IV c , which interposes a relatively long columella between the stapes footplate and the TM; and 4) Type IV i-M , which also interposes a relatively long columella between the stapes footplate and the manubrium. Note that the latter Types IV c and IV i-M are mainly used when the stapes superstructure is missing ( Bahmad et al, 2022 ).…”

Section: Methodsmentioning

confidence: 99%

Mechanical effect of reconstructed shapes of autologous ossicles on middle ear acoustic transmission

Asakura

Ito

Hirabayashi

et al. 2023

Front. Bioeng. Biotechnol.

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Conductive hearing loss is caused by a variety of defects, such as chronic otitis media, osteosclerosis, and malformation of the ossicles. In such cases, the defective bones of the middle ear are often surgically reconstructed using artificial ossicles to increase the hearing ability. However, in some cases, the surgical procedure does not result in increased hearing, especially in a difficult case, for example, when only the footplate of the stapes remains and all of the other bones are destroyed. Herein, the appropriate shapes of the reconstructed autologous ossicles, which are suitable for various types of middle-ear defects, can be determined by adopting an updating calculation based on a method that combines numerical prediction of the vibroacoustic transmission and optimization. In this study, the vibroacoustic transmission characteristics were calculated for bone models of the human middle ear by using the finite element method (FEM), after which Bayesian optimization (BO) was applied. The effect of the shape of artificial autologous ossicles on the acoustic transmission characteristics of the middle ear was investigated with the combined FEM and BO method. The results suggested that the volume of the artificial autologous ossicles especially has a great influence on the numerically obtained hearing levels.

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Section: Methodsmentioning

confidence: 99%

Mechanical effect of reconstructed shapes of autologous ossicles on middle ear acoustic transmission

Asakura

Ito

Hirabayashi

et al. 2023

Front. Bioeng. Biotechnol.

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Extrusion and Dislocation in Titanium Middle Ear Prostheses: A Literature Review

Canzi,

Carlotto,

Bruschini

et al. 2023

Brain Sciences

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Titanium middle ear (ME) prostheses are widely used in surgical practice due to their acoustic properties. However, they present a significant drawback shared by all synthetic materials currently in use for ME reconstruction: they can be rejected by the organism of the host. In this study, we aim to review the current literature on titanium partial ossicular replacement prostheses (PORPs) and total ossicular replacement prostheses (TORPs) extrusion and dislocation. Eighty articles were analysed after a full article review based on the inclusion and exclusion criteria. The most common indication for reconstruction was chronic otitis media with cholesteatoma. The average extrusion or dislocation rate was 5.2%, ranging from 0 to 35%. The average improvements in the air–bone gap were 12.1 dB (1.6 dB to 25.1 dB) and 13.8 (−0.5 dB to 22.7 dB) for the PORP and TORP groups, respectively. The data reported on this topic are highly variable, demonstrating that functional outcomes are difficult to predict in clinical practice. We believe that the current limitations could be overcome with technological developments, including bioengineering research focused on promoting prosthesis adaptation to the ME environment.

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Titanium prostheses versus stapes columella type 3 tympanoplasty: a comparative prospective study

Cited by 2 publications

References 23 publications

Mechanical effect of reconstructed shapes of autologous ossicles on middle ear acoustic transmission

Mechanical effect of reconstructed shapes of autologous ossicles on middle ear acoustic transmission

Extrusion and Dislocation in Titanium Middle Ear Prostheses: A Literature Review

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