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tympanic bone

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https://www.readbyqxmd.com/read/29779364/swing-door-overlay-tympanoplasty-surgical-technique-and-outcomes
#1
So Young Park, Hyuk Jae Lee, Myung Joo Shim, Dong Kee Kim, Byung Do Suh, Shi Nae Park
Objectives: The classical overlay tympanoplasty is technically difficult with some disadvantages and thus less popular. However, it is particularly useful for large, anterior perforations. In this study, we describe the technique of a modified overlay graft in the tympanoplasty coined as the swing-door overlay tympanoplasty and report its outcomes. Methods: Retrospective review of patients undergoing the swing-door overlay tympanoplasty at a tertiary referral center between 2003 and 2016 was performed...
May 22, 2018: Clinical and Experimental Otorhinolaryngology
https://www.readbyqxmd.com/read/29764787/myringoplasty-quality-control-is-necessary-comparison-of-surgical-results-of-two-consecutive-series-in-a-single-institution
#2
Matti Iso-Mustajärvi, Aarno Dietz, Heikki Löppönen
OBJECTIVE: The aim of this study was to evaluate and compare myringoplasty results from two different consecutive series conducted at the Kuopio University Hospital during a four-decade period. MATERIALS AND METHODS: We reviewed 315 patients (a total of 338 ears) who underwent myringoplasty at Kuopio University Hospital between the years 1986 and 2012. The results from this series were compared with those form a previously published series of 404 patients who underwent myringoplasty between 1970 and 1985 at the same institution...
April 2018: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/29756238/otopathologic-evaluation-of-temporalis-fascia-grafts-following-successful-tympanoplasty-in-humans
#3
Danielle R Trakimas, Reuven Ishai, Iman Ghanad, Nicole L Black, Elliott D Kozin, Jeffrey Tao Cheng, Aaron K Remenschneider
OBJECTIVE: Temporalis fascia is a commonly used graft material in tympanoplasty; however, little is known about how the histological structure of fascia remodels postimplantation. Herein, we aim to quantify the pre- and postoperative microstructure of temporalis fascia and compare histological findings to the native tympanic membrane (TM). METHODS: Temporal bone specimens having undergone successful subtotal or total drum replacement using temporalis fascia were identified (n = 3)...
May 14, 2018: Laryngoscope
https://www.readbyqxmd.com/read/29748449/risk-factors-of-tympanoplasties-in-long-term-observation
#4
Joanna Janiak-Kiszka, Wojciech Kaźmierczak, Kinga Lewandowska, Mateusz Grabowski, Henryk Kaźmierczak, Łukasz Kluczyński
OBJECTIVES: The aim of the study was to evaluate risk factors influencing the results of tympanoplasties on the base of material taken from the Department of Otolaryngology and Laryngological Oncology Collegium Medicum of Nicolaus Copernicus University in Bydgoszcz between 2004-2009. In this period 98 operations were done. The time from operation to hearing examination was 3 to 7 years, mean 5,43. Tympanoplastic operation were divided according to Tos classification. Measuring hearing results, tonal audiometry was done and mean air bone gap on four frequencies was assesed (500, 1000, 2000, 3000 Hz), according to AAO-HNS guidelines (1995)...
April 30, 2018: Otolaryngologia Polska
https://www.readbyqxmd.com/read/29741741/microsurgical-resection-of-glomus-jugulare-tumors-with-facial-nerve-reconstruction-3-dimensional-operative-video
#5
Duarte N C Cândido, Jean Gonçalves de Oliveira, Luis A B Borba
Paragangliomas are tumors originating from the paraganglionic system (autonomic nervous system), mostly found at the region around the jugular bulb, for which reason they are also termed glomus jugulare tumors (GJT). Although these lesions appear to be histologically benign, clinically they present with great morbidity, especially due to invasion of nearby structures such as the lower cranial nerves. These are challenging tumors, as they need complex approaches and great knowledge of the skull base. We present the case of a 31-year-old woman, operated by the senior author, with a 1-year history of tinnitus, vertigo, and progressive hearing loss, that evolved with facial nerve palsy (House-Brackmann IV) 2 months before surgery...
May 8, 2018: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29738388/tympanic-membrane-perforation-repair-using-porcine-small-intestinal-submucosal-grafting
#6
Robert J Yawn, Matthew M Dedmon, Brendan P O'Connell, Frank W Virgin, Alejandro Rivas
OBJECTIVE: To evaluate the use of porcine small intestinal submucosal grafts for tympanic membrane repair. PATIENTS: Adult and pediatric patients with tympanic membrane perforations with and without chronic otitits media, and perforations after removal of cholesteatoma. INTERVENTION: Endoscopic or microscopic tympanic membrane repair using porcine small intestinal submucosal grafts (Biodesign). MAIN OUTCOME MEASURE(S): Perforation closure, bone and air pure-tone averages (PTA), air-bone gap (ABG), and word recognition scores (WRS) were recorded as outcome measures...
June 2018: Otology & Neurotology
https://www.readbyqxmd.com/read/29728168/external-auditory-canal-inferior-posterior-inferior-and-anterior-canal-wall-overhangs
#7
Kavita Dedhia, Robert F Yellon, Barton F Branstetter, Mark Best
OBJECTIVES: To characterize anatomic variants of the external ear canal (EAC), specifically canal wall overhangs. EAC overhangs are problematic since they obstruct the view of the tympanic membrane (TM) and middle ear, possibly creating diagnostic and surgical difficulties. METHODS: We reviewed pre-operative temporal bone CTs from children with cholesteatoma, and no history of EAC erosion or surgery. We measured the anterior canal wall overhang (ACOH), inferior (ICOH), and posterior-inferior (PICOH)...
June 2018: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/29690583/anatomical-and-radiographic-study-on-the-skull-and-mandible-of-the-common-opossum-didelphis-marsupialis-linnaeus-1758-in-the-caribbean
#8
Reda Mohamed
Common opossums ( Didelphis marsupialis ) are found throughout the Caribbean island of Trinidad and Tobago. The present work was conducted on 10 skulls and mandibles of the common opossum to describe the osteology and foramina of these skulls and mandibles grossly and radiographically. The information that is garnered can be used to detect, diagnose, and treat head affections, as well as for comparative studies with the skulls and mandibles of other similar species. The skulls and mandibles were prepared and cleaned using standard method...
April 23, 2018: Veterinary Sciences
https://www.readbyqxmd.com/read/29668049/surgical-management-of-spontaneous-cerebrospinal-fistulas-and-encephaloceles-of-the-temporal-bone
#9
Joe Walter Kutz, Andrew K Johnson, Cameron C Wick
OBJECTIVES/HYPOTHESIS: To describe the presentation, surgical findings, and outcomes in patients with spontaneous temporal bone cerebrospinal fluid (CSF) fistulas and encephaloceles. STUDY DESIGN: Retrospective chart review. METHODS: A retrospective chart review of patients treated for a spontaneous temporal bone CSF fistula and/or encephalocele over a 10-year period was performed. Data recorded included demographic information, presenting signs and symptoms, radiographic and laboratory studies, surgical approach, materials used for repair, surgical complications, and successful closure of the CSF fistula...
April 18, 2018: Laryngoscope
https://www.readbyqxmd.com/read/29628367/butterfly-cartilage-tympanoplasty-outcomes-a-single-institution-experience-and-literature-review
#10
Mejd Jumaily, Joel Franco, James A Gallogly, Joshua L Hentzelman, Dary J Costa, Alan P K Wild, Anthony A Mikulec
PURPOSE: In 1998, Dr. Eavey described the trans-canal inlay butterfly cartilage tympanoplasty technique, also known as cartilage button tympanoplasty. Many retrospective studies have since demonstrated its efficacy and decreased operative time when compared to underlay and overlay tympanoplasty techniques. The butterfly cartilage tympanoplasty approach uses only a cartilage graft to repair tympanic membrane perforations. The aim of this study was to review the literature for studies that examined butterfly cartilage tympanoplasty success rates and outcomes and compare them to outcomes from our cohort...
March 29, 2018: American Journal of Otolaryngology
https://www.readbyqxmd.com/read/29594077/results-of-type-i-tympanoplasty-using-fascia-with-or-without-cartilage-reinforcement-10-years-experience
#11
Ali Kouhi, Mohammad Taghi Khorsandi Ashthiani, Mir Mohammad Jalali
Introduction: There remains controversy about the optimal kind of graft to repair tympanic membrane. The purpose of this study was to evaluate the anatomical and auditory outcomes of type I tympanoplasty using fascia with or without cartilage reinforcement. Materials and Methods: This retrospective cohort study was conducted from 2005 to 2015. All cases were surgically treated by a single surgeon. We excluded cases in which the etiology of chronic otitis media was cholesteatoma...
March 2018: Iranian Journal of Otorhinolaryngology
https://www.readbyqxmd.com/read/29566591/malignant-lymphoma-with-middle-ear-involvement-in-a-sprague-dawley-rat
#12
Jean-Francois Lafond, Annick Landry
Sprague-Dawley rats are amongst the most widely used animals in biomedical research and malignant lymphoma has long been known to be a frequent neoplasm in these animals. A 9-month-old male control Sprague-Dawley rat from a toxicity study showed gelatinous material in the cranial cavity and dark, thickened cerebral meninges at necropsy. At microscopic evaluation of the temporal bone, neoplastic lymphocytes were seen invading several structures of the middle ear. The neoplastic cells appeared to extend from the marrow of the temporal bone, covered the dorsal part of the tympanic cavity wall, and surrounded and infiltrated the base of the tensor tympani muscle as well as the chorda tympani branch of the facial nerve...
January 1, 2018: Laboratory Animals
https://www.readbyqxmd.com/read/29553522/a-surgical-procedure-for-the-administration-of-drugs-to-the-inner-ear-in-a-non-human-primate-common-marmoset-callithrix-jacchus
#13
Sho Kurihara, Masato Fujioka, Tomohiko Yoshida, Makoto Koizumi, Kaoru Ogawa, Hiromi Kojima, Hirotaka James Okano
Hearing research has long been facilitated by rodent models, although in some diseases, human symptoms cannot be recapitulated. The common marmoset (Callithrix jacchus) is a small, easy-to-handle New World monkey which has a similar anatomy of the temporal bone, including the middle ear ossicular chains and inner ear to humans, than in comparison with that of rodents. Here, we report a reproducible, safe, and rational surgical approach to the cochlear round window niche for the drug delivery to the inner ear of the common marmoset...
February 27, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29547085/analysis-of-various-tracts-of-mastoid-air-cells-related-to-csf-leak-after-the-anterior-transpetrosal-approach
#14
Ryota Tamura, Ryosuke Tomio, Farrag Mohammad, Masahiro Toda, Kazunari Yoshida
OBJECTIVE The anterior transpetrosal approach (ATPA) was established in 1984 and has been particularly effective for petroclival tumors. Although some complications associated with this approach, such as venous hemorrhage in the temporal lobe and nervous disturbances, have been resolved over the years, the incidence rate of CSF leaks has not greatly improved. In this study, some varieties of air cell tracts that are strongly related to CSF leaks are demonstrated. In addition, other pre- and postoperative risk factors for CSF leakage after ATPA are discussed...
March 16, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29533334/application-of-regenerative-treatment-for-tympanic-membrane-perforation-with-cholesteatoma-tumor-or-severe-calcification
#15
Shin-Ichi Kanemaru, Rie Kanai, Misaki Yoshida, Yuji Kitada, Kaoru Omae, Shigeru Hirano
OBJECTIVE: To apply regenerative treatment for tympanic membrane (TM) perforation to patients with severe calcification of the TM, cholesteatomas, or tumors localized to the tympanic cavity. STUDY DESIGN: Controlled clinical pilot study. SETTING: General hospitals. PATIENTS: Forty-five patients (age: 8-85; M = 19, F = 26) were selected from patients with or without TM perforation for the regenerative treatment...
April 2018: Otology & Neurotology
https://www.readbyqxmd.com/read/29502435/ossicular-chain-reconstruction-in-a-developing-country
#16
Es-Hak Bedri, Miriam Redleaf
OBJECTIVES: In Ethiopia, 2-stage operations with middle ear prostheses are economically unfavorable. We hypothesized that single-stage autologous ossiculoplasty results in acceptable tympanic membrane (TM) and hearing improvements in a setting of limited resources. METHODS: One hundred eighty-eight patients (197 ears) who underwent 1-stage autologous ossiculoplasty for ossicular dysfunction are presented. All but 14 of these ears also had perforations of the TM...
May 2018: Annals of Otology, Rhinology, and Laryngology
https://www.readbyqxmd.com/read/29498964/structural-analysis-of-tensor-tympani-muscle-tympanic-diaphragm-epitympanum-and-protympanum-in-meni%C3%A3-re-s-disease-a-human-temporal-bone-study
#17
Takahiro Azuma, Taketoshi Nogaki, Patricia Schachern, Michael M Paparella, Sebahattin Cureoglu
HYPOTHESIS: We hypothesized that there would be significant anatomic differences of the tensor tympani muscle (TTM), tympanic diaphragm, epitympanum, and protympanum in patients with versus without Menière's disease. BACKGROUND: The effects of tenotomy on Menière's disease suggested it relieves the pressure on the inner ear of the contraction of the TTM and of negative middle ear pressure. METHODS: Using human temporal bones from patients with Menière's disease, two studies were conducted...
April 2018: Otology & Neurotology
https://www.readbyqxmd.com/read/29490759/-in-vivo-study-of-mastoid-obliteration-using-hydroxyapatite-chitosan-patch
#18
Jieun Kang, Se-Joon Oh, Hyun-Min Lee, Ki-Jae Jeong, Nari Shin, Il-Woo Lee, Jaebeom Lee
Many artificial materials have been used for mastoid cavity obliteration in canal wall down tympanomastoidectomy. Among the artificial materials, hydroxyapatite is most popular material for mastoid cavity obliteration. Hydroxyapatite is biostable and osteoconductive, but it has poor mechanical properties, especially brittleness. To overcome the limitation, hydroxyapatite has been combined with natural chitosan polymer, which is biocompatible and flexible, to produce a hydroxyapatite-chitosan patch via a sublimation-assisted compression process...
December 1, 2017: Journal of Biomedical Nanotechnology
https://www.readbyqxmd.com/read/29486541/efficacy-of-tympanoplasty-without-mastoidectomy-for-treating-chronic-otitis-media-in-patients-with-mastoid-cavity-opacification-in-temporal-bone-computed-tomography-findings
#19
Hantai Kim, Ho Young Bae, Oak-Sung Choo, Yun-Hoon Choung
OBJECTIVES: Combined mastoidectomy is generally preferred to tympanoplasty alone when treating patients with chronic otitis media (COM), particularly when temporal bone computed tomography (TBCT) shows that the mastoid cavity contains opacification of soft tissue density. However, in cases with Eustachian tube dysfunction, a mastoid cavity volume may be a burden to its function. We hypothesized that tympanoplasty alone might be better than tympanoplasty combined with mastoidectomy because soft tissue in the mastoid cavity is a sequel to a protective physiological response...
March 2018: Clinical and Experimental Otorhinolaryngology
https://www.readbyqxmd.com/read/29485635/skull-typology-and-morphometrics-of-the-nigerian-local-dog-canis-lupus-familiaris
#20
Olumayowa O Igado
Understanding skull anatomy and morphometry is crucial to the diagnosis and treatment of some osteology disorders. This study investigated the morphometry and skull typology of the skull of the Nigerian local dog as a skull prototype for the dolichocephalic breed of dogs. A total of sixteen adult dogs (7 males, 9 females), of about 2 years were used. A total of 20 parameters were measured on each skull, and two indices (cephalic and orbital) calculated. The males had higher values for nine parameters (two of which were calculated indices), including the maximum width of the skull, length of the mandibular symphysis, height of the tympanic bulla and height of the external auditory opening, although no statistically significant difference was observed (p > 0...
December 30, 2017: Nigerian Journal of Physiological Sciences: Official Publication of the Physiological Society of Nigeria
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