Surgery of Idiopathic Malleus Fixation

Martin, C.; Oletski, A.; Prades, J.‐M.

doi:10.1097/mao.0b013e318191a66d

Cited by 12 publications

(18 citation statements)

References 13 publications

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“…3D airway reconstruction has been negatively compared with morphometric data, given that the former can result in incremental losses of data during each stage of the smoothing process [15]. Defining the vector field by user-drawn strokes, one has applied Laplacian smoothing over the mesh vertices for interpolating the field [16].…”

Section: Introductionmentioning

confidence: 99%

Smoothing for the Optimal Surface of a 3D Image Model of the Human Ossicles

Chen

Fan

et al. 2011

J. mech.

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This study assessed the optimal process for the surface smoothing of 3D image models of in vivo human ossicles. A 3D image model of the ossicles was reconstructed from high resolution computed tomography imaging data. Three smoothing methods including constrained smoothing, unconstrained smoothing and smoothsurface will be discussed. The volume of the 3D image model produced by unconstrained smoothing differed substantially from the original model volume prior to smoothing. Constrained smoothing had an uneven effect on the surface of the 3D image models. Using the smoothsurface module, we were able to obtain an optimal surface of the 3D image model of the human ossicles including the malleus, incus and stapes, using 20 iterations and a  value of 0.6.

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Section: Introductionmentioning

confidence: 99%

Smoothing for the Optimal Surface of a 3D Image Model of the Human Ossicles

Chen

Fan

et al. 2011

J. mech.

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“…A study of otosclerotic temporal bones did not find any correlation between stapes and malleus fixation [17] . However, histological evidence that supports the correlation of stapes and malleus fixation was provided in 2002, as a high incidence of hyalinization of the anterior malleus ligament in the ears of patients suffering from otosclerosis was shown [16] . Another middle ear anomaly worth mentioning, which was intraoperatively identified, was the absence of the stapedius muscle tendon in 1 ear.…”

Section: Additional Ear Anomaliesmentioning

confidence: 99%

“…In a case series examining stapes and further ossicular abnormalities, malleus fixation was identified in thick-section CT in most of the cases but not in all of them [16,20,21] . Although the sections are thin enough (0.6 mm), it seems that fine abnormalities of the ossicles are not always easy to identify.…”

Section: Weakness Of Hrctmentioning

confidence: 99%

“…In particular, malleus malformations, malleus-incus and malleus-epitympanum fixation, were identified in 3 cases. The idiopathic malleus head fixation was first described in 1860 and it was strongly believed to be an independent pathology [16] . A study of otosclerotic temporal bones did not find any correlation between stapes and malleus fixation [17] .…”

Section: Additional Ear Anomaliesmentioning

confidence: 99%

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Ear and Further Anatomic Anomalies in Children Undergoing Stapedotomy

Kontorinis¹,

Goetz

Lenarz³

et al. 2011

ORL

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Purpose: Aim of this study was to examine any stapes fixation-related clinical, intraoperative and high-resolution computed tomography (HRCT) findings in children undergoing stapedotomy. Procedures: Detailed diagnostic assessment was performed in 12 children (18 ears) who underwent stapedotomy within the period 2005–2008. Results: Ear malformations such as malleus-incus anomalies, malleus-epitympanum fixation and absence of the stapedius tendon, small external auditory canal and auricle malformations were clinically and/or intraoperatively diagnosed. HRCT identified a petrous high jugular bulb and malformed inner auditory canal in 4 ears; however, it failed to recognize ossicular fixation. Systemic anomalies, namely kyphoscoliosis, esophageal atresia and finger malformations were identified in 2 children. Summing up, additional anatomic anomalies were found in 8 patients (66.7%). Conclusions: Ear malformations may coexist in children with stapes fixation. Ossicular fixation is not easily recognized with HRCT, and therefore, ossicular mobility should always be tested intraoperatively. In a few cases, pediatric stapes fixation can coexist with systemic dysplasias; in such patients, additional referral to geneticists is recommended.

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“…Temporal bone CT is useful for arriving at the diagnosis of malleus fixation, and exploratory tympanotomy leads to a definitive diagnosis. 3,6 Alternatively, lasers can be used to ablate the fixation, while preserving the ossicular chain. Shifting of the ossicular chain toward the site of fixation is a helpful clue.…”

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confidence: 99%

Radiology Quiz Case 3: Diagnosis

2012

Arch Otolaryngol Head Neck Surg

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Surgery of Idiopathic Malleus Fixation

Abstract: There was no statistically significant difference (p = 0.79) between the 2 surgical techniques used to improve hearing in malleus head fixation.

Cited by 12 publications

References 13 publications

Smoothing for the Optimal Surface of a 3D Image Model of the Human Ossicles

Smoothing for the Optimal Surface of a 3D Image Model of the Human Ossicles

Ear and Further Anatomic Anomalies in Children Undergoing Stapedotomy

Radiology Quiz Case 3: Diagnosis

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