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tympanic bone

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https://www.readbyqxmd.com/read/28816689/single-stage-canal-wall-down-mastoidectomy-with-reconstruction-of-the-canal-wall-5-years-experience-in-fayoum-province-egypt
#1
Mohamed Qotb, Tamer Fawzy, Waleed Ragab
OBJECTIVE: Removing the posterior canal wall or canal wall down mastoidectomy (CWDM) for the management of cholesteatoma remains controversial. We advocate partial removal of the posterior canal wall for complete eradication, followed by canal wall defect reconstruction to restore the normal anatomy and avoid the complications of CWDM. MATERIALS AND METHODS: Sixty-four patients with cholesteatoma (71 ears) were included. This study was conducted between 2009 and 2012...
August 2017: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/28816688/cartilage-ossiculoplasty-from-stapes-to-tympanic-membrane-in-one-stage-intact-canal-wall-tympanoplasty-for-cholesteatoma
#2
Denis Ayache, Florent Manac'h, Christian B Teszler, Mathieu Veyrat, Wissame El Bakkouri, Alain Corré, Mary Daval
OBJECTIVE: To report hearing results of cartilage interposition ossiculoplasty in one-stage intact canal wall (ICW) tympanoplasty for cholesteatoma with intact stapes. MATERIALS AND METHODS: A retrospective study of pre and postoperative hearing status was conducted at a tertiary referral otologic center in a series of 61 patients having undergone one-stage ICW tympanoplasty for cholesteatoma with intact stapes and cartilage ossiculoplasty during the same procedure...
August 2017: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/28797141/butterfly-cartilage-tympanoplasty-long-term-results-excellent-treatment-method-in-small-and-medium-sized-perforations
#3
Isa Kaya, Murat Benzer, Mustafa Uslu, Cem Bilgen, Tayfun Kirazli
Objectives: The aim of this study was to evaluate and report the long-term results of the butterfly cartilage tympanoplasty. Short-term and long-term hearing outcomes were compared according to age and perforation location as well. Methods: Ninety-three patients who were diagnosed with noncomplicated chronic otitis media and underwent microscopic transcanal butterfly cartilage tympanoplasty due to anterior, posterior, and central tympanic membrane perforation were included...
August 12, 2017: Clinical and Experimental Otorhinolaryngology
https://www.readbyqxmd.com/read/28774486/histopathology-of-tympanic-membranes-from-patients-with-ventilation-tubes
#4
Mehmet Faruk Oktay, Hasan Deniz Tansuker, Hisaki Fukushima, Michael M Paparella, Patricia A Schachern, Sebahattin Cureoglu
OBJECTIVE: To evaluate the histopathologic changes in tympanic membranes (TMs) with ventilation tubes (VTs). METHODS: In this retrospective human temporal bone study our overall study group included 4 subgroups of TMs from deceased donors as follows: 24 with a history of VT insertion for chronic otitis media with effusion (COME-VT); 5 with a history of VT insertion for Meniere's disease (MD-VT); 33 without a history of VT insertion for chronic otitis media with effusion (COME); and 14 without a history of VT insertion for Meniere's disease (MD)...
July 31, 2017: Auris, Nasus, Larynx
https://www.readbyqxmd.com/read/28765845/spatially-offset-raman-spectroscopy-for-photon-migration-studies-in-bones-with-different-mineralization-levels
#5
Kay Sowoidnich, John H Churchwell, Kevin Buckley, Allen E Goodship, Anthony W Parker, Pavel Matousek
The ability of Spatially Offset Raman Spectroscopy (SORS) to obtain chemically specific information from below the sample surface makes it a promising technique for non-invasive in vivo diagnosis of bone conditions by sampling bone through the skin. The depth below a surface interrogated by SORS depends on the system's optical properties and is difficult to estimate for complex bone material. This paper uses 830 nm laser excitation to investigate the influence of bone mineralization on photon migration properties in deer antler cortex, equine metacarpal cortex and whale tympanic bulla...
August 2, 2017: Analyst
https://www.readbyqxmd.com/read/28751512/flat-panel-angiography-in-the-cross-sectional-imaging-of-the-temporal-bone-assessment-of-image-quality-and-radiation-dose-compared-with-a-64-section-multisection-ct-scanner
#6
G Conte, E Scola, S Calloni, R Brambilla, M Campoleoni, L Lombardi, F Di Berardino, D Zanetti, L M Gaini, F Triulzi, C Sina
BACKGROUND AND PURPOSE: Cross-sectional imaging of the temporal bone is challenging because of the complexity and small dimensions of the anatomic structures. We evaluated the role of flat panel angiography in the cross-sectional imaging of the temporal bone by comparing its image quality and radiation dose with a 64-section multisection CT scanner. MATERIALS AND METHODS: We retrospectively collected 29 multisection CT and 29 flat panel angiography images of normal whole-head temporal bones...
July 27, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28739189/endoscopic-transcanal-myringoplasty-for-tympanic-perforations-an-outpatient-minimally-invasive-procedure
#7
Chih-Chieh Tseng, Ming-Tang Lai, Chia-Che Wu, Sheng-Po Yuan, Yi-Fang Ding
OBJECTIVE: Since the 1950s, microscopic myringoplasty has been the standard surgery for repairing a perforated tympanic membrane. In addition to conventional microscopic myringoplasty, endoscopic myringoplasty has been an emerging technique since the late 1990s. This study evaluated the efficacy of endoscopic transcanal myringoplasty for repairing tympanic perforations and examined the minimally invasive feature of this technique (no postauricular incision, no canalplasty). METHODS: We retrospectively reviewed the medical records of patients who underwent endoscopic transcanal myringoplasty for perforations of the tympanic membrane...
July 21, 2017: Auris, Nasus, Larynx
https://www.readbyqxmd.com/read/28736834/temporal-bone-chondroblastoma-imaging-characteristics-with-pathologic-correlation
#8
Sun-Won Park, Ji-Hoon Kim, Ji Hoon Park, Kyung Chul Moon, Jin Chul Paeng, Byung Se Choi, Younghen Lee, Jae Hyoung Kim, Roh-Eul Yoo, Koung Mi Kang, Soo Chin Kim, Seung Hong Choi, Tae Jin Yun, Chul Ho Sohn
BACKGROUND: Chondroblastoma commonly involves the temporal bone in the craniofacial region, but its imaging features have not been elucidated. This study aimed to describe the imaging features of temporal bone chondroblastoma with their pathologic correlation. METHODS: Radiopathologic correlation was performed in 5 patients with temporal bone chondroblastoma from our database and in 11 patients identified through a PubMed search. RESULTS: The cases of temporal bone chondroblastoma commonly involve the squamous part, temporal and infratemporal fossae, temporomandibular joint, and tympanic cavity, with the following features: high attenuation with calcification; heterogeneity; low signal intensity on T2-weighted imaging with enhancement; a smooth interface to the brain; and strong hypermetabolism on fluorodeoxyglucose (FDG) positron emission tomography (PET)/CT...
July 24, 2017: Head & Neck
https://www.readbyqxmd.com/read/28721726/3d-printed-earable-smart-devices-for-real-time-detection-of-core-body-temperature
#9
Hiroki Ota, Minghan Chao, Yuji Gao, Eric Wu, Li-Chia Tai, Kevin Chen, Yasutomo Matsuoka, Kosuke Iwai, Hossain M Fahad, Wei Gao, Hnin Yin Yin Nyein, Liwei Lin, Ali Javey
Real-time detection of basic physiological parameters such as blood pressure and heart rate is an important target in wearable smart devices for healthcare. Among these, the core body temperature is one of the most important basic medical indicators of fever, insomnia, fatigue, metabolic functionality, and depression. However, traditional wearable temperature sensors are based upon the measurement of skin temperature, which can vary dramatically from the true core body temperature. Here, we demonstrate a three-dimensional (3D) printed wearable "earable" smart device that is designed to be worn on the ear to track core body temperature from the tympanic membrane (i...
July 28, 2017: ACS Sensors
https://www.readbyqxmd.com/read/28687918/a-retrospective-study-on-facial-nerve-schwannomas-a-disease-with-a-high-risk-of-misdiagnosis-and-hearing-loss
#10
Yu Li, Chunfu Dai
The objective is to increase awareness of facial nerve schwannomas (FNSs). Clinical data from 32 cases with FNSs who received surgical treatment from 2005 to 2015 were reviewed retrospectively. The clinical data included age, sex, presentations, duration, facial nerve function, temporal-bone high-resolution computed tomography (CT) and magnetic resonance imaging (MRI) findings, surgical approaches, and postoperative histopathological examination. 16 men and 16 women were included, aged 7-69 years. The average age at diagnosis was approximately 44 years...
July 7, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28687415/age-related-changes-in-the-morphological-relationship-between-the-supratubal-recess-and-the-eustachian-tube
#11
Juan Hong, Keguang Chen, Huiying Lyu, Dongming Yin, Lin Yang, Tianyu Zhang, Peidong Dai
OBJECTIVE: To study age-related changes in the morphology of the supratubal recess (STR) and its relationship with the Eustachian tube (ET). METHODS: Seventy randomly selected computed tomography (CT) images of non-pathological temporal bones of 49 patients were reviewed retrospectively. The patients were grouped according to age into 4 age groups: group A (0-3 years), group B (4-8 years), group C (9-18 years) and group D (19-50 years). Space analytic geometry was assessed to directly calculate the morphology of the STR and the ET...
July 4, 2017: Auris, Nasus, Larynx
https://www.readbyqxmd.com/read/28657955/the-hannover-coupler-controlled-static-prestress-in-round-window-stimulation-with-the-floating-mass-transducer
#12
Mathias Müller, Rolf Salcher, Thomas Lenarz, Hannes Maier
INTRODUCTION: Stimulation of the cochlear round window (RW) with the floating mass transducer (FMT) still suffers from large variation in clinical outcomes. Beside the geometric mismatch between RW and FMT diameter that is a known limiting factor in achieving optimal coupling between actuator and RW membrane, the applied static force between FMT and RW is usually undefined. In this study, the feasibility and efficacy of a specially designed FMT coupler permitting application of static preloads to the RW membrane to optimize FMT-RW coupling was investigated...
September 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28634733/dynamic-properties-of-human-tympanic-membrane-after-exposure-to-blast-waves
#13
Warren G Engles, Xuelin Wang, Rong Z Gan
Blast overpressure causes dynamic damage to middle ear components, and tympanic membrane (TM) rupture is the most frequent middle ear injury. However, it is unclear how the blast waves change mechanical properties of the TM and affect sound transmission through the ear. This paper reports the current study on dynamic properties of the TM after exposure to blast waves by using acoustic loading and laser Doppler vibrometry (LDV). The TM specimens were prepared from human temporal bones following exposures to blast overpressure...
June 20, 2017: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/28631670/-topographic-anatomy-of-the-hook-region-and-its-significance-for-the-choice-of-the-surgical-technique-for-the-cochlear-implantation
#14
Yu K Yanov, V E Kuzovkov, A S Lilenko, I V Kostevich, S B Sugarova, A Sh Amonov
The mode of the introduction of the active electrode of a cochlear implant into the cochlea remains a key issue as far as cochlear implantation is concerned. Especially much attention has recently been given to the relationship between the anatomical features of the basal region of the cochlea (the so-called 'fish hook') and the possibility to approach it. We have undertaken the attempt to optimize the approach to the tympanic canal (scala tympanica) of the cochlea with a view to reducing to a minimum the risk of an injury to the cochlear structures in the course of cochlear implantation...
2017: Vestnik Otorinolaringologii
https://www.readbyqxmd.com/read/28608748/tympanic-membrane-and-ossicular-sparing-modified-lateral-temporal-bone-resection
#15
Yaser Ghavami, Yarah M Haidar, Marlon Maducdoc, Tjoson Tjoa, Omid Moshtaghi, Harrison W Lin, Hamid R Djalilian
A modified lateral temporal bone resection (mLTBR) is a unique technique that spares the tympanic membrane (TM) and ossicles in select patients with squamous cell carcinoma (SCCa). The records of 5 patients with SCCa of the temporal bone with negative frozen-section biopsy at the tympanic annulus were reviewed. The mean follow-up time for the patients was 29.2 months. One patient received postoperative radiation due to cervical nodal extracapsular spread. All patients were recurrence free as of the most recent follow-up (range, 8-50 months)...
June 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28607890/endoscopic-tympanoplasty-using-nasal-septal-cartilage-allograft
#16
N Ahilasamy, Badra Shanti, Sivaprakasam Rajasekaran
The purpose of the study was to analyze the morphological and functional outcomes in a series of 60 patients for whom Type I tympanoplasty was done using alcohol preserved nasal septal cartilage allograft through endoscopic permeatal route. The study was a prospective, interventional (surgical) study of 60 patients between October 2012 and September 2014. Patients were operated using 0°, 4 mm, 18 cm long Hopkin's rod endoscope through permeatal route. 70% ethyl alcohol preserved allogeneic nasal septal cartilage with thickness of around 0...
June 2017: Indian Journal of Otolaryngology and Head and Neck Surgery
https://www.readbyqxmd.com/read/28607883/evaluation-of-requirements-for-staging-the-procedure-of-reconstruction-of-middle-ear-after-canal-wall-down-mastoidectomy
#17
C Ravishankar, R K Datta
Cholesteatoma is a progressive destructive ear disease which can affect any age group. It has been found to be more severe in children and young adults. It erodes the surrounding bone of middle ear, mastoid and ossicles. It causes partial to total deafness, unpleasant smelling discharge, pain, tinnitus, vertigo and facial paralysis. It can even cause meningitis, brain abscess and death. The post-operative outcome of hearing, and the state of the reconstructed middle-ear cavity after concurrent and staged reconstruction of middle ear after canal wall down mastoidectomy was studied in 30 ears with middle-ear cholesteatoma...
June 2017: Indian Journal of Otolaryngology and Head and Neck Surgery
https://www.readbyqxmd.com/read/28585463/endoscopic-lateral-cartilage-graft-tympanoplasty
#18
Cameron C Wick, Demetri Arnaoutakis, Vivian F Kaul, Brandon Isaacson
Objective To describe a novel technique for lateral graft tympanoplasty. Study Design Case series with chart review. Setting Tertiary care university hospital. Subjects and Methods Pediatric and adult patients with tympanic membrane perforations deemed unfavorable for a medial graft technique due to the perforation characteristics or myringitis. Results Between 2014 and 2016, 34 ears from 31 patients underwent a transcanal endoscopic lateral cartilage graft tympanoplasty. The mean age was 24.4 years (range, 6-71 years), and 22 patients (65%) were younger than 18 years...
May 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28553355/innovative-3d-model-of-the-human-middle-ear-in-high-resolution-with-a-histological-microgrinding-method-a-feasibility-study-and-comparison-with-%C3%AE-ct
#19
Susanne Bradel, Laura Doniga-Crivat, Silke Besdo, Franziska Lexow, Michael Fehr, Thomas Lenarz, Nils Prenzler, Gudrun Brandes
Conclusion. The development of a histological 3D model of the tympanic cavity visualizes the exact microanatomy of the sound conduction organ and is therefore essential for finite elements simulations and surgical training. Objectives. So far, no accurate histological 3D model of the sound conduction system existed in literature. For 3D reconstruction of the very fine structures inside and outside the auditory ossicles, a method based on histological slices allows a more differential analysis of both hard and soft tissues and could thus be superior to μCT...
2017: International Journal of Otolaryngology
https://www.readbyqxmd.com/read/28537107/clinical-and-audiological-short-term-and-long-term-outcomes-of-fat-graft-myringoplasty
#20
Johan Knutsson, Annika Kahlin, Magnus von Unge
INTRODUCTION: Results of fat graft myringoplasty are often reported with only short-term follow-up. Audiological results are less commonly reported, as well as long-term follow-up results. MATERIALS AND METHODS: One hundred consecutive patients scheduled for fat graft myringoplasty were included in a prospective cohort study. Clinical and audiological outcomes were assessed at six weeks and one year postoperatively. RESULTS: Perforation sizes ranged from 0...
September 2017: Acta Oto-laryngologica
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