Role of Mastoid Pneumatization in Temporal Bone Fractures

Ilea, Aranka; Butnaru, Anca; Sfrangeu, Silviu Andrei; Hedeșiu, Mihaela; Dudescu, Cristian; Berce, Petru; Chezan, H.; Hurubeanu, Lucia; Trombitaș, Veronica; Câmpian, Radu Septimiu; Albu, Silviu

doi:10.3174/ajnr.a3887

Cited by 33 publications

(27 citation statements)

References 12 publications

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“…Nevertheless, the temporal bone pneumatization was measured in relation to previous studies [11], as well as the skin thickness at the impact area and bone mineralization. In fact, the mastoid pneumatization plays a role in the absorption and dispersion of kinetic energy during lateral temporal bone trauma [13].…”

Section: Perspectivesmentioning

confidence: 99%

Temporal bone fracture under lateral impact: biomechanical and macroscopic evaluation

Montava

Masson

Lavieille

et al. 2015

Med Biol Eng Comput

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This work was conducted to study biomechanical properties and macroscopic analysis of petrous fracture by lateral impact. Seven embalmed intact human cadaver heads were tested to failure using an electrohydraulic testing device. Dynamic loading was done at 2 m/s on temporal region with maximal deflection to 12 mm. Anthropometric and pathological data were determined by pretest and posttest computed tomography images, macroscopic evaluation, and anatomical dissection. Biomechanical data were obtained. Results indicated the head to have nonlinear structural response. The overall mean values of failure forces, deflections, stiffness, occipital, and frontal peak acceleration were 7.1 kN (±1.1), 9.1 mm (±1.8), 1.3 kN/mm (±0.4), 90.5 g (±22.5), and 65.4 g (±16), respectively. The seven lateral impacts caused fractures, temporal fractures in six cases. We observed very strong homogeneity for the biomechanical and pathological results between different trials in our study and between data from various experiments and our study. No statistical correlation was found between anthropometric, biomechanical, and pathological data. These data will assist in the development and validation of finite element models of head injury.

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Section: Perspectivesmentioning

confidence: 99%

Temporal bone fracture under lateral impact: biomechanical and macroscopic evaluation

Montava

Masson

Lavieille

et al. 2015

Med Biol Eng Comput

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“…Finally, assessment of temporal bone pneumatization is important considering the role played by the mastoid portion of the temporal bone in the absorption and dispersion of kinetic energy during direct lateral trauma to the temporal bone [ 14 ].…”

Section: External and Middle Earmentioning

confidence: 99%

Post traumatic deafness: a pictorial review of CT and MRI findings

et al. 2016

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Hearing loss is a common functional disorder after trauma, and radiologists should be aware of the ossicular, labyrinthine or brain lesions that may be responsible. After a trauma, use of a systematic approach to explore the main functional components of auditory pathways is essential. Conductive hearing loss is caused by the disruption of the conductive chain, which may be due to ossicular luxation or fracture. This pictorial review firstly describes the normal 2-D and 3-D anatomy of the ossicular chain, including the incudo-malleolar and incudo-stapedial joints. The role of 3-D CT in the post-traumatic evaluation of injury to the temporal bone is then evaluated. In the case of sensorineural hearing loss, CT can detect pneumolabyrinth and signs of perilymphatic fistulae but fails to detect subtle lesions within the inner ear, such as labyrinthine haemorrhage or localized brain axonal damage along central auditory pathways. The role that MRI with 3-D-FLAIR acquisition plays in the detection of inner ear haemorrhage and post-traumatic lesions of the brain parenchyma that may lead to auditory agnosia is also discussed.Key Points• The most common middle ear injuries are incudo-malleolar and incudo-stapedial joint luxation.• In patients with SNHL, CT can detect pneumolabyrinth or perilymphatic fistula• 3-D-FLAIR MRI appears the best sequence to highlight labyrinthine haemorrhage• Axonal damage and brain hematoma may lead to deafness

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“…182 During anesthesia, MEP rises after nitrous oxide gas inhalation, and incidence of nausea and vomiting was higher in the small mastoid group versus the large mastoid group. 181 In another report based on nitrous oxide, Alper et al 183 found an inverse relationship between mastoid size and gas exchange rate, indicating that the mastoid was acting as an ME gas reserve.…”

Section: Physiology and Pathophysiologymentioning

confidence: 99%

“…Alicandri-Ciufelli et al 180 hypothesized that mastoid function is that of creating an adequate negative pressure for best performance in high-frequency or ultrasound sound transmission. Ilea et al 181 concluded that the MACS plays a role in the absorption and dispersion of kinetic energy during direct lateral trauma, reducing the incidence of fracture.…”

Section: Physiology and Pathophysiologymentioning

confidence: 99%

Panel 2: Anatomy (Eustachian Tube, Middle Ear, and Mastoid—Anatomy, Physiology, Pathophysiology, and Pathogenesis)

Alper

Luntz

Takahashi

et al. 2017

Otolaryngol.--head neck surg.

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Objective. In this report, we review the recent literature (ie, past 4 years) to identify advances in our understanding of the middle ear-mastoid-eustachian tube system. We use this review to determine whether the short-term goals elaborated in the last report were achieved, and we propose updated goals to guide future otitis media research.Data Sources. PubMed, Web of Science, Medline.Review Methods. The panel topic was subdivided, and each contributor performed a literature search within the given time frame. The keywords searched included middle ear, eustachian tube, and mastoid for their intersection with anatomy, physiology, pathophysiology, and pathology. Preliminary reports from each panel member were consolidated and discussed when the panel met on June 11, 2015. At that meeting, the progress was evaluated and new short-term goals proposed.Conclusions. Progress was made on 13 of the 20 short-term goals proposed in 2011. Significant advances were made in the characterization of middle ear gas exchange pathways, modeling eustachian tube function, and preliminary testing of treatments for eustachian tube dysfunction.Implications for Practice. In the future, imaging technologies should be developed to noninvasively assess middle ear/eustachian tube structure and physiology with respect to their role in otitis media pathogenesis. The new data derived from these structure/function experiments should be integrated into computational models that can then be used to develop specific hypotheses concerning otitis media pathogenesis and persistence. Finally, rigorous studies on medical or surgical treatments for eustachian tube dysfunction should be undertaken.

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Role of Mastoid Pneumatization in Temporal Bone Fractures

Cited by 33 publications

References 12 publications

Temporal bone fracture under lateral impact: biomechanical and macroscopic evaluation

Temporal bone fracture under lateral impact: biomechanical and macroscopic evaluation

Post traumatic deafness: a pictorial review of CT and MRI findings

Panel 2: Anatomy (Eustachian Tube, Middle Ear, and Mastoid—Anatomy, Physiology, Pathophysiology, and Pathogenesis)

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