Fixation and detachment of superior and anterior malleolar ligaments in human middle ear: Experiment and modeling

Dai, Chenkai; Cheng, Tiffany; Wood, Mark W.; Gan, Rong Z.

doi:10.1016/j.heares.2007.03.006

Cited by 59 publications

(47 citation statements)

References 12 publications

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“…We do not agree with these authors, as well as with the denomination used by Pinto "a tiny ligament". We agree with Coleman, Komori et al (1986), Ögütcen-Toller & Junniper;Rodriguez-Vásquez et al (1998) and Dai et al (2007) when they stablish a difference between the discomalleolar ligament and anterior ligament of the malleus. The anterior ligament of the malleus can be considered an extension of the sphenomandibular ligament inside the middle ear.…”

Section: Discussionsupporting

confidence: 91%

Frequency of Occurence of the Discomalleolar Ligament in the Adult Man

Alves

Deana²

2010

Int. J. Morphol.

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SUMMARY:The discomaleollar ligament is not described in the anatomy textbooks but was demonstrated by Pinto (1962) and others. It is a ligamentous structure connecting the malleus in the tympanic cavity and the articular disc and the capsule of the temporomandibular joint. This anatomical relationship between the middle ear and temporomandibular joint is supposed to be one of the explanations for the otological symptons associated with temporomandibular joint dysfunction. The aim of our study was to determine the frequency of occurence of the discomaleollar ligament. Twenty hemi-heads of adults human were carefully dissected from a superior approach through the middle cranial fossa. The bone of the middle cranial fossa over the temporomandibular joint region and the roof of the tympanic cavity were carefully removed to expose the articular disc, ossicles of the middle ear, lateral pterygoid muscle and other structures in the region. The discomalleolar ligament was found in all studied cases what allow us to suggest that it is an intrinsic ligament of the temporomandibular joint.

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Section: Discussionsupporting

confidence: 91%

Frequency of Occurence of the Discomalleolar Ligament in the Adult Man

Alves

Deana²

2010

Int. J. Morphol.

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“…Zwislocki assumed that there is a rigid coupling between malleus and incus, in fact he omitted this joint from the analog circuit. Next stage of middle ear modelling started from 1978 when finite element method (FEM) was used to study spatial vibrations of the tympanic membrane and the ossicles [1,5,7,12,13,38,39,41]. Although, FEM is very helpful but its accuracy depends on the effort put in geometric and mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

An influence of temperature on reconstructed middle ear with shape memory prosthesis

et al. 2017

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In the paper idea of reconstructed middle ear with a prosthesis made of shape memory alloy is proposed. The new design of shape memory prosthesis is used to enable adjusting its length to individual patient's needs which is a novel contribution of the paper. In order to make a proper fit of prosthesis, a surgeon has to adjust its size and position by cutting step by step classical prosthesis. It takes time of a operation and enlarges a period of patient's esthesia. Therefore, a shape memory prosthesis (SMP) is proposed to shorten operation time and improve fitting through precisely selected length. A reconstructed middle ear is modelled as a two degree of freedom system with nonlinear shape memory element. Finding advisable periodic and undesirable a periodic and irregular behaviour in various temperature is the main aim of the paper. Results of the study should give an answer whether SMP can be useful in medical practice and should also explain dynamics of the middle ear with SMP. The properties of the shape memory prosthesis, in the form of helical spring, are described here by a polynomial dependence. Firstly, free vibrations are investigated and equilibrium points, next forced vibrations are studied under different parameters of external excitations and temperature range. Bifurcation analysis and stability of periodic solutions are performed in order to reveal the system behaviour. Finally, interesting dynamical findings of chaotic vibrations pure regular and regular oscillations with fluctuation are presented. However, from practical point of view only harmonic response of the stapes is advisable. That can be achieved at the normal temperature of a human body only for small excitation amplitude.

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“…Theoretical modeling approaches have been reported for the middle ear mechanics in normal (e.g., Wada et al 1992, Sun et al 2002, Gan et al 2006, Gentil et al 2011, diseased (e.g. Dai et al 2007, Gan et al 2009, Zhao et al 2009) and reconstructed (e.g., Ladak and Funnell 1996, Zahnert et al 1997, Prendergast et al 1999, Koike et al 2000, Ferris and Prendergast 2000, Kelly et al 2003, Yao et al 2012 states. However, it is difficult to validate these models.…”

Section: Introductionmentioning

confidence: 99%

Elastic Properties of the Annular Ligament of the Human Stapes—AFM Measurement

Kwacz

Rymuza

Michałowski

et al. 2015

JARO

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Elastic properties of the human stapes annular ligament were determined in the physiological range of the ligament deflection using atomic force microscopy and temporal bone specimens. The annular ligament stiffness was determined based on the experimental load-deflection curves. The elastic modulus (Young's modulus) for a simplified geometry was calculated using the Kirchhoff-Love theory for thin plates. The results obtained in this study showed that the annular ligament is a linear elastic material up to deflections of about 100 nm, with a stiffness of about 120 N/m and a calculated elastic modulus of about 1.1 MPa. These parameters can be used in numerical and physical models of the middle and/or inner ear.

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Fixation and detachment of superior and anterior malleolar ligaments in human middle ear: Experiment and modeling

Cited by 59 publications

References 12 publications

Frequency of Occurence of the Discomalleolar Ligament in the Adult Man

Frequency of Occurence of the Discomalleolar Ligament in the Adult Man

An influence of temperature on reconstructed middle ear with shape memory prosthesis

Elastic Properties of the Annular Ligament of the Human Stapes—AFM Measurement

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