Bone and Cartilage Conduction

Nishimura, Tadashi

doi:10.3390/audiolres12010007

Cited by 1 publication

(2 citation statements)

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“…A Japanese research group proposed a new concept with cartilage conduction as a third sound transmission pathway [ 10 ]. Its mechanism involves the transmission of sound through the cartilage and soft tissues of the outer ear, with the mechanical vibrations generated by the transducer propagated through the AC and BC pathways [ 11 , 12 , 13 ]. Figure 1 illustrates the possible pathways associated with cartilage conduction.…”

Section: Introductionmentioning

confidence: 99%

“…Based on this sound transmission mechanism, a new cartilage conduction hearing aid (CC-HA) has been commercialised and used in clinical practice in Japan since 2017. It was shown to be a safe and effective alternative hearing rehabilitation tool for patients with hearing loss, particularly those who cannot use conventional AC hearing aids due to outer ear obstructions or malformations (e.g., atresia and microtia) [ 13 ]. However, a recent review by Nishimura et al [ 12 ] highlighted the limitation in the current evidence of using CC-HAs in patients with hearing loss, such as the short duration of CC-HA use in clinical practice and the lack of comparative analyses with other hearing devices.…”

Section: Introductionmentioning

confidence: 99%

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A Systematic Review of the Audiological Efficacy of Cartilage Conduction Hearing Aids and the Factors Influencing Their Clinical Application

Lee

Cao

et al. 2023

Audiology Research

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This systematic review evaluates the efficacy and benefit of cartilage conduction hearing aids (CC-HAs) and that factors that influence purchasing decisions. The hearing thresholds and functional gain following CC-HA wear were synthesised. A one-way analysis of variance compared the differences in the hearing thresholds and functional gain at individual frequencies and in patients with a variety of pathological changes. The synchronised aided hearing threshold and functional gain at 2.0 kHz were significantly better than at 0.5, 1.0, and 4.0 kHz. There was no significant difference in the synchronised unaided hearing thresholds across individual frequencies between 0.5 and 4.0 kHz. The synchronised functional gain in patients with atresia was significantly greater than in patients with aural atresia or stenosis and middle ear pathologies with normal ear canals. The acceptability of CC-HAs in terms of purchase decision is influenced by the condition of the external auditory meatus and severity of hearing loss, with the highest purchase rate seen in patients with aural atresia or stenosis. CC-HAs’ fitting procedure advantages and cosmetic considerations make these devices a viable and preferred choice for individuals with microtia and aural atresia. Additional research to evaluate the benefits towards emotional well-being is crucial to gain insights into the psychological impact of CC-HA use.

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