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tympanic bone

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https://www.readbyqxmd.com/read/29121374/boomerang-shaped-vs-shield-shaped-chondroperichondrial-cartilage-grafts-for-type-1-tympanoplasty-in-children-a-study-of-121-patients
#1
Can Özbay, Fatih Kemal Soy, Erkan Kulduk, Riza Dundar, Ahmet Yükkaldiran, Osman Kadir Güler, Ertan Koç
Many techniques and graft materials have been used for the reconstruction of the tympanic membrane. We conducted a retrospective study to compare anatomic and functional outcomes of type 1 tympanoplasty that we performed with boomerang-shaped chondroperichondrial cartilage grafts (BSGs) and shield-shaped chondroperichondrial cartilage grafts (SSGs) in pediatric patients. Our study population was made up 121 patients-61 boys and 60 girls, aged 7 to 16 years (mean: 12.4)-who had undergone a type 1 tympanoplasty...
October 2017: Ear, Nose, & Throat Journal
https://www.readbyqxmd.com/read/29116047/factors-that-have-an-influence-on-bone-conduction-thresholds-changes-after-otosurgery-in-the-patients-operated-on-due-to-the-perforation-of-the-tympanic-membrane-with-the-preserved-ossicular-chain
#2
Maciej Wiatr, Agnieszka Wiatr, Sebastian Kocoń, Jacek Składzień
INTRODUCTION: The aim of the middle ear surgery is to eliminate abnormalities from the mucous, ensure the due airing of the postoperative cavity and reconstruct the sound-conducting system in the middle ear. Numerous reports can be found in literature on the changes to bone conduction as a consequence of middle ear surgery. STUDY OBJECTIVE: The aim of the work is to define the factors that affect bone conduction in the patients operated on due to the perforation of the tympanic membrane with the preserved and normal mobile ossicular chain...
August 31, 2017: Otolaryngologia Polska
https://www.readbyqxmd.com/read/29099232/a-novel-imaging-method-for-the-cartilaginous-eustachian-tube-lumen-computerized-tomography-during-the-forced-response-test
#3
Cuneyt M Alper, Tanya J Rath, Miriam S Teixeira, J Douglas Swarts
OBJECTIVES: In vivo imaging of the open cartilaginous Eustachian tube (ET) lumen by computed tomography (CT) scan during ET function (ETF) testing to establish new methodology. METHODS: Five adults underwent unilateral ETF testing of an ear with a nonintact tympanic membrane using the forced response test (FRT) to measure the opening pressure (PO), steady state pressure (PS), and flow conductance (CS). Then at baseline and during the PS phase of the FRT, a temporal-bone CT scan with continuous 0...
November 1, 2017: Annals of Otology, Rhinology, and Laryngology
https://www.readbyqxmd.com/read/29072656/-the-endoscopic-anatomy-of-the-middle-ear-a-dissection-study
#4
R M Rzaev, R R Rzaev
The objective of the present work was to study the specific endoscopic anatomical features of the middle ear using the dissected temporal bones with the intact tympanic membrane. The 18 cm long endoscopes 4 mm in diameter with a visual angle from 0 to 45 degrees in the combination with some other microinstruments, such as ear pincers, needles, curettes, elevators, and suction tubes, were used during the examination. It was shown that endomeato-transtympanic endosopy provides a panoramic view of almost all structures of the middle ear...
2017: Vestnik Otorinolaringologii
https://www.readbyqxmd.com/read/29068074/the-anterior-process-of-the-malleus-in-extant-lagomorpha-mammalia
#5
Wolfgang Maier, Adrian Tröscher, Irina Ruf
The anterior anchoring of the malleus of 30 extant species of Lagomorpha (rabbits, hares, pikas) has been studied on the basis of histological serial sections and µCT-scans. It is shown that former studies of Oryctolagus, Lepus, and Ochotona are incomplete, because the rostral part of the processus anterior of the malleus is always lacking due to damage of this extremely delicate structure. Our study shows that in perinatal stages of Leporidae the praearticulare develops a prominent processus internus that fits into a groove at the ventral side of the tegmen tympani; this "tongue and groove"-arrangement may act as a hinge...
October 25, 2017: Journal of Morphology
https://www.readbyqxmd.com/read/29050095/-revisional-radical-mastoidectomy-surgeries-25-cases-experience
#6
L Li, J Xie, Y Liu, S S Gong
Objective: To analyze the risk factors of failure to dry ear after radical mastoidectomy and discuss key points in revisonal surgery. Methods: Clinical data of 25 patients(32 ears) with revisonal mastoidectomy were analyzed. The preoperative temporal bone CT findings, intra-operative findings, surgical procedures, postoperative operating cavities and aural abilities were recorded and analyzed. Results: All patients received preoperative temporal bone CT followed by revisonal radical mastoidectomy under microscope and general anesthesia...
October 7, 2017: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/29043904/effects-of-anesthesia-with-nitrous-oxide-on-tympanoplasty-outcomes-a-randomized-controlled-trial
#7
Ali Kouhi, Fatemeh Hajimohammadi, Sasan Dabiri, Amin Amali, Neda Enayati, Sahar Manavi, Niloufar Saeedi, Ziba Bidar
OBJECTIVES: To investigate effects of nitrous oxide (N2O), as inhalational anesthetic agent, on tympanoplasty outcomes. METHODS: In this randomized controlled trial, patients were randomized into two groups: 39 patients who received N2O as an inhalant anesthesia and 47 patients who did not receive. All were operated on with standard type of ear surgery. The protocol for the two groups was identical. Before surgery baseline audiometry was performed. Postoperative audiological controls were carried out at 3 months...
October 18, 2017: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/29039235/short-term-subjective-and-objective-outcomes-of-patients-receiving-endoscopic-transcanal-myringoplasty-for-repairing-tympanic-perforations
#8
Chih-Chieh Tseng, Ming-Tang Lai, Chia-Che Wu, Sheng-Po Yuan, Yi-Fang Ding
Objective Endoscopic transcanal myringoplasty (ETM) has been an emerging technique for repairing tympanic perforations since the late 1990s. Objective outcomes (ie, graft success rates and hearing results) of patients who received ETM are well documented; however, subjective outcomes of these patients have rarely been reported. Hence, this study evaluated subjective and objective outcomes of patients who received ETM for repairing tympanic perforations. Study Design Prospective study. Setting Tertiary care university hospital...
October 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/29018496/surgical-treatment-of-acquired-atresia-of-the-external-auditory-ear-canal
#9
Valerie Droessaert, Robby Vanspauwen, Erwin Offeciers, Andrzej Zarowski, Joost van Dinther, Thomas Somers
Introduction  Acquired atresia of the external auditory canal is characterized by the formation of fibrous tissue in the medial part. The causes include chronic otitis externa, perforated chronic otitis media, postoperative or idiopathic healing problems. Acquired atresia presents with hearing loss and can be associated with otorrhea. Objective  We analyzed the results of surgery after six months and two years by checking (1) pre- and postoperative hearing thresholds; (2) presence of otorrhea; and (3) whether a dry and patent ear canal is achieved...
October 2017: International Archives of Otorhinolaryngology
https://www.readbyqxmd.com/read/29017231/-long-term-follow-up-and-patient-satisfaction-after-tympanoplasty-with-titanium-clip-prothesis
#10
Guido Wolferts, Daniel Schicke, K-Wolfgang Delank
Aim of the present study is to evaluate the long term results of ossiculoplasty using titanium clip prosthesis. A retrospective analysis with prospective follow-up has been done including for all patients who had a Clip-PORP implanted between the years 2002-2013. Following this, audiometric hearing results were measured with clinical examination including otoscopy and quality of life evaluation using Glasgow benefit inventory. 48 patients (51 ears, 29 men, 19 women, average age 44.1 years) received followed up after an average duration of 6...
October 2017: Laryngo- Rhino- Otologie
https://www.readbyqxmd.com/read/28988463/evidence-against-the-mucosal-traction-theory-in-cholesteatoma
#11
Henrique F Pauna, Rafael C Monsanto, Patricia Schachern, Michael M Paparella, Richard A Chole, Sebahattin Cureoglu
OBJECTIVES: To investigate the distribution of ciliated epithelium in the human middle ear and its potential role in the formation of cholesteatoma. STUDY DESIGN: Comparative human temporal bone study. METHODS: We selected temporal bones from 14 donors with a diagnosis of cholesteatoma, 15 with chronic otitis media without retraction pockets, 14 with chronic otitis media with retraction pockets, 14 with cystic fibrosis (CF), and 16 controls...
October 8, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28988445/effect-of-cochlear-implantation-on-middle-ear-function-a-three-month-prospective-study
#12
Joseph D Wasson, Luke Campbell, Scott Chambers, Amy Hampson, Robert J S Briggs, Stephen J O'Leary
OBJECTIVES/HYPOTHESIS: To determine if cochlear implantation has a delayed effect on the middle ear conductive hearing mechanism by measuring laser Doppler vibrometry (LDV) of the tympanic membrane (TM) in both implanted and contralateral control ears preoperatively and 3 months postoperatively, and then comparing the relative change in LDV outcome measures between implanted and control ears. STUDY DESIGN: Prospective cohort study. METHODS: Eleven preoperative adult unilateral cochlear implant recipients in previously unoperated ears with normal anatomy and aerated temporal bones were included in this study...
October 8, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28988244/evolution-of-sound-source-localization-circuits-in-the-nonmammalian-vertebrate-brainstem
#13
Peggy L Walton, Jakob Christensen-Dalsgaard, Catherine E Carr
The earliest vertebrate ears likely subserved a gravistatic function for orientation in the aquatic environment. However, in addition to detecting acceleration created by the animal's own movements, the otolithic end organs that detect linear acceleration would have responded to particle movement created by external sources. The potential to identify and localize these external sources may have been a major selection force in the evolution of the early vertebrate ear and in the processing of sound in the central nervous system...
2017: Brain, Behavior and Evolution
https://www.readbyqxmd.com/read/28984803/long-term-complications-and-surgical-failures-after-ossiculoplasty
#14
Matthew D Cox, Joshua Cody Page, Aaron Trinidade, John L Dornhoffer
OBJECTIVE: To study long-term complications after ossiculoplasty. STUDY DESIGN: Case series with chart review. SETTING: Tertiary care referral center otology practice. PATIENTS: One hundred ninety-five patients (18-88 yr of age) undergoing ossiculoplasty with tympanoplasty or tympanomastoidectomy using cartilage tympanic membrane grafts, retrograde mastoidectomy with canal wall reconstruction, or mastoid obliteration techniques between July 1998 and July 2012...
December 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28964289/three-dimensional-assessment-of-the-temporal-bone-and-mandible-deformations-in-patients-with-congenital-aural-atresia
#15
Yaoyao Fu, Chenlong Li, Peidong Dai, Tianyu Zhang
OBJECTIVE: To investigate the deformations of temporal bone and mandible combined with congenital aural atresia. METHODS: A total of 158 patients with congenital aural atresia were included in the study. The raw CT data of the temporal bone was imported into MIMICS v 12 and threshold dissection, region growing and three-dimensional (3D) calculation were used to calculate 3D models. The 3D characteristics of the temporal bone and upper part of mandible were assessed...
October 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28955673/therapeutic-effect-of-intra-tympanic-dexamethasone-hyaluronic-acid-combination-in-sudden-sensorineural-hearing-loss
#16
Mehrdad Rogha, Amin Kalkoo
INTRODUCTION: Hearing loss is fairly a common disorder which is usually treated with corticosteroids via systemic administration and/or intra-tympanic injection. This study aimed to compare the effectiveness of intra-tympanic injections of dexamethasone with its combination with hyaluronic acid in patients with sudden sensorineural hearing loss. MATERIALS AND METHODS: In this clinical trial, 40 patients were randomly assigned to two groups; in the first group, 20 patients received 2...
September 2017: Iranian Journal of Otorhinolaryngology
https://www.readbyqxmd.com/read/28955593/evaluation-of-styloid-process-morphology-and-calcification-types-in-both-genders-with-different-ages-and-dental-status
#17
Guldane Magat, Sevgi Ozcan
PURPOSE: The purpose of this study was to investigate the morphology and calcification pattern of the styloid process (SP) and to determine their relations with subjects' age, gender, and dental status. MATERIALS AND METHODS: 910 panoramic radiographs were stratified by age, dental status and gender. The distance between the points where SP leaves the tympanic plate of the temporal bone and the bony tip of SP was measured. Calcification patterns were classified as : (A) Region 1, tympanohyal alone (B) Region 2, stylohyal alone (C) Region 1 and 2, separate (D) Regions 1 and 2, continuous (E) Regions 1, 2, and 3, continuous (F) Regions 1, 2, and 3, separate (G) Regions 1 and 2, continuous, but separate from 3 (H) Regions 2 and 3, separate (I) Regions 2 and 3, continuous, but separate from 1 (J) Region 3 alone (K) Region 3 and 4, continuous (may include calcification in one other region) (L) No styloid process visible...
2017: J Istanb Univ Fac Dent
https://www.readbyqxmd.com/read/28942628/postoperative-mastoid-aeration-following-canal-wall-up-mastoidectomy-according-to-preoperative-middle-ear-disease-analysis-of-temporal-bone-computed-tomography-scans
#18
Oh Joon Kwon, Jae Moon Sung, Hwi Kyeong Jung, Chang Woo Kim
BACKGROUND AND OBJECTIVES: The aim of our study was to evaluate postoperative mastoid aeration according to the preoperative middle ear disease and investigate the factors affecting it. SUBJECTS AND METHODS: We retrospectively reviewed the high-resolution computed tomography (CT) scans of temporal bones that were taken 1 year after surgery. The postoperative mastoid aeration was evaluated according to the preoperative diagnosis, and classified into three groups: grade 1 (complete mastoid aeration), an air-filled epitympanum and mastoid cavity; grade 2 (partial mastoid aeration), an air-filled epitympanum and partially aerated mastoid cavity; and grade 3 (absence of mastoid aeration), no air space in the mastoid cavity...
September 2017: Journal of Audiology & Otology
https://www.readbyqxmd.com/read/28931190/surgical-trainees-and-powered-drill-use-do-not-affect-type-i-tympanoplasty-hearing-outcomes
#19
David T Kent, David H Chi, Dennis J Kitsko
The purposes of this study were to determine if use of a powered drill or trainee involvement during tympanoplasty is associated with a decline in sensorineural hearing, as well as to examine whether trainee involvement affected tympanic membrane (TM) closure rates. This study was a chart review (February 2006 to October 2011) of 172 pediatric otolaryngology patients undergoing type I tympanoplasty for TM perforation of any etiology at a tertiary-care pediatric otolaryngology practice. Data collected included air conduction (AC) at 250 to 8,000 Hz, speech reception thresholds, bone conduction (BC) at 500 to 4,000 Hz, and air-bone gap (ABG) at 500 to 4,000 Hz...
September 2017: Ear, Nose, & Throat Journal
https://www.readbyqxmd.com/read/28929072/type-1-tympanoplasty-by-cartilage-palisade-and-temporalis-fascia-technique-a-comparison
#20
Nikhil Arora, J C Passey, A K Agarwal, R Bansal
(1) To compare graft take up of type-1 tympanoplasty with cartilage palisade technique with those of type-1 tympanoplasty using autotemporalis fascia. (2) To compare hearing results of type 1 tympanoplasty with cartilage palisade technique with those of type-1 tympanoplasty using autotemporalis fascia. A prospective clinical study. It consisted of 60 patients divided into two groups of 30 patients each. After randomization 30 patients underwent type 1 tympanoplasty using cartilage palisade technique and 30 underwent type 1 tympanoplasty using autotemporalis fascia...
September 2017: Indian Journal of Otolaryngology and Head and Neck Surgery
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