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https://www.readbyqxmd.com/read/28601902/titanium-incus-interposition-ossiculoplasty-audiological-outcomes-and-extrusion-rates
#1
Selcuk Mulazimoglu, Alexander Saxby, Christoph Schlegel, Thomas Linder
This study aimed to evaluate the benefit but also the extrusions, dislocations, and failures of a titanium incus prosthesis along with the long-term audiological outcomes. We prospectively collected data from 139 patients undergoing ossiculoplasty using the Fisch titanium incus prosthesis between 2001 and 2016. Overall, 126 patients with at least 6 months of follow-up (mean 4.5 years, range 6-155 months) were analyzed. Patients were grouped as "extrusion" (n = 9, 7%) if the prosthesis extruded, "failure" (n = 22, 18%) if a reoperation was needed concerning the prosthesis, and "stable" (n = 95, 75%) if the prosthesis remained functional in the middle ear...
June 10, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28601531/sheep-as-a-large-animal-ear-model-middle-ear-ossicular-velocities-and-intracochlear-sound-pressure
#2
Dominik Péus, Ivo Dobrev, Lukas Prochazka, Konrad Thoele, Adrian Dalbert, Andreas Boss, Nicolas Newcomb, Rudolf Probst, Christof Röösli, Jae Hoon Sim, Alexander Huber, Flurin Pfiffner
Animals are frequently used for the development and testing of new hearing devices. Dimensions of the middle ear and cochlea differ significantly between humans and commonly used animals, such as rodents or cats. The sheep cochlea is anatomically more like the human cochlea in size and number of turns. This study investigated the middle-ear ossicular velocities and intracochlear sound pressure (ICSP) in sheep temporal bones, with the aim of characterizing the sheep as an experimental model for implantable hearing devices...
June 7, 2017: Hearing Research
https://www.readbyqxmd.com/read/28598950/drill-induced-cochlear-injury-during-otologic-surgery-intracochlear-pressure-evidence-of-acoustic-trauma
#3
Renee M Banakis Hartl, Jameson K Mattingly, Nathaniel T Greene, Nyssa F Farrell, Samuel P Gubbels, Daniel J Tollin
HYPOTHESIS: Drilling on the incus produces intracochlear pressure changes comparable to pressures created by high-intensity acoustic stimuli. BACKGROUND: New-onset sensorineural hearing loss (SNHL) following mastoid surgery can occur secondary to inadvertent drilling on the ossicular chain. To investigate this, we test the hypothesis that high sound pressure levels are generated when a high-speed drill contacts the incus. METHODS: Human cadaveric heads underwent mastoidectomy, and fiber-optic sensors were placed in scala tympani and vestibuli to measure intracochlear pressures (PIC)...
June 8, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28566723/requirement-for-jagged1-notch2-signaling-in-patterning-the-bones-of-the-mouse-and-human-middle-ear
#4
Camilla S Teng, Hai-Yun Yen, Lindsey Barske, Bea Smith, Juan Llamas, Neil Segil, John Go, Pedro A Sanchez-Lara, Robert E Maxson, J Gage Crump
Whereas Jagged1-Notch2 signaling is known to pattern the sensorineural components of the inner ear, its role in middle ear development has been less clear. We previously reported a role for Jagged-Notch signaling in shaping skeletal elements derived from the first two pharyngeal arches of zebrafish. Here we show a conserved requirement for Jagged1-Notch2 signaling in patterning the stapes and incus middle ear bones derived from the equivalent pharyngeal arches of mammals. Mice lacking Jagged1 or Notch2 in neural crest-derived cells (NCCs) of the pharyngeal arches display a malformed stapes...
May 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28555595/endoscopic-vs-microscopic-approach-in-stapes-surgery-advantages-in-the-middle-ear-structures-visualization-and-trainee-s-point-of-view
#5
Giannicola Iannella, Dario Marcotullio, Massimo Re, Alessandra Manno, Benedetta Pasquariello, Diletta Angeletti, Vincenzo Falasca, Giuseppe Magliulo
OBJECTIVE: Comparing the endoscopic and microscopic approaches in stapes surgery, and establishing the surgical approach that allows better results in terms of visualization of the middle ear structures and aids assistant's training. MATERIALS AND METHODS: Twenty-one residents from the first to the fifth year of training in Otolaryngology were enrolled in this prospective study. A questionnaire specifically designed to investigate the understanding of middle ear anatomy, the surgical steps, and a personal opinion about endoscopic stapes surgery was submitted to each resident...
April 2017: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/28538078/vibroplasty-in-severe-congenital-or-acquired-meatal-stenosis-by-coupling-an-active-middle-ear-implant-to-the-short-process-of-the-incus
#6
Jan Peter Thomas, Christiane Voelter, Katrin Neumann, Stefan Dazert
OBJECTIVE: To evaluate the safety and effectiveness of coupling an active middle ear implant to the short process of the incus in subjects with meatal pathologies. STUDY DESIGN: Retrospective study. SETTING: Tertiary referral center. PATIENTS: Twelve patients suffering from either congenital aural atresia or acquired meatal fibrosis. INTERVENTION: Implantation of an active middle ear implant with coupling of the actuator to the short process of the incus...
May 19, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28498487/the-malleus-to-oval-window-revision-stapedotomy-efficacy-and-longitudinal-study-outcome
#7
Peter A Benedict, Ling Zhou, Robert Peng, Darius Kohan
OBJECTIVE: To determine the longitudinal effectiveness of the malleus to oval window stapedotomy technique among patients undergoing revision surgery when the incus is unavailable. STUDY DESIGN: Retrospective, case series. METHODS: Charts of 15 patients who underwent 17 malleus attachment stapedotomies performed by a single surgeon from 2000 to 2015 were reviewed. Surgery was ambulatory, transcanal, with laser technique, and under local anesthesia...
May 12, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28498268/transcanal-endoscopic-ear-surgery-for-excision-of-a-facial-nerve-venous-malformation-with-interposition-nerve-grafting-a-case-report
#8
Cameron C Wick, Mark Sakai, Timothy E Richardson, Brandon Isaacson
OBJECTIVE: To illustrate a novel approach for the surgical management of a venous malformation of the facial nerve, including interposition nerve grafting, via an exclusively transcanal endoscopic ear surgery (TEES) approach. PATIENT: Thirty nine-year-old woman with a preoperative House-Brackmann (HB) grade IV facial paresis secondary to a facial nerve tumor. INTERVENTION(S): Surgical excision and interposition nerve graft via a transcanal endoscopic approach...
July 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28463590/systematic-review-of-ossicular-chain-anatomy-strategic-planning-for-development-of-novel-middle-ear-prostheses
#9
Brandon Kamrava, Pamela C Roehm
Objective To systematically review the anatomy of the ossicular chain. Data Sources Google Scholar, PubMed, and otologic textbooks. Review Methods A systematic literature search was performed on January 26, 2015. Search terms used to discover articles consisted of combinations of 2 keywords. One keyword from both groups was used: [ ossicular, ossicle, malleus, incus, stapes] and [ morphology, morphometric, anatomy, variation, physiology], yielding more than 50,000 hits. Articles were then screened by title and abstract if they did not contain information relevant to human ossicular chain anatomy...
April 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28441229/preliminary-model-for-the-design-of-a-custom-middle-ear-prosthesis
#10
Brandon Kamrava, Jonathan A Gerstenhaber, Mamta Amin, Yah-El Har-El, Pamela C Roehm
HYPOTHESIS: Custom prostheses could be used to recreate the ossicular chain and improve hearing. BACKGROUND: Ossicular discontinuity or fixation occurs in 55% of cases of conductive hearing loss, with most cases involving the incus. Reconstruction has been achieved by a variety of methods; however, there has been little improvement in hearing outcomes in decades. METHODS: Precise measurements of anatomic dimensions, weight, and center of gravity were taken from 19 cadaveric incudes...
July 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28439694/modifications-to-a-3d-printed-temporal-bone-model-for-augmented-stapes-fixation-surgery-teaching
#11
Yann Nguyen, Elisabeth Mamelle, Daniele De Seta, Olivier Sterkers, Daniele Bernardeschi, Renato Torres
Functional outcomes and complications in otosclerosis surgery are governed by the surgeon's experience. Thus, teaching the procedure to residents to guide them through the learning process as quickly as possible is challenging. Artificial 3D-printed temporal bones are replacing cadaver specimens in many institutions to learn mastoidectomy, but these are not suitable for middle ear surgery training. The goal of this work was to adapt such an artificial temporal bone to aid the teaching of otosclerosis surgery and to evaluate this tool...
April 24, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28393055/outcome-of-incus-interposition-after-preservation-in-soft-tissue
#12
Mohammad Faramarzi, Sareh Roosta, Mahboobe Dianat
INTRODUCTION: The lenticular process of the incus succumbs to necrosis in chronic otitis media. Few researchers have addressed the issue of autograft incus preservation in the soft tissue of the tragus or mastoid cavity. Nonetheless, preservation of the incus in this method during the second stage of ossiculoplasty is a subject that is still up for debate. This study was carried out to demonstrate the hearing outcome after a modification of the incus interposition technique, which involved preserving it in the periauricular soft tissue...
March 2017: Iranian Journal of Otorhinolaryngology
https://www.readbyqxmd.com/read/28320600/tympanometry-and-isolated-fracture-of-the-stapes
#13
C Aussedat, C Bobiller, K Gaillot, E Lescanne, D Bakhos
INTRODUCTION: Temporal bone fractures are frequently associated with ossicular dislocations or fractures, most commonly involving the incus. To our knowledge, isolated fracture of the posterior crus of the stapes has not been previously reported. CASE REPORT: A 20-year-old man consulted for persistent left hypoacusis several months after a head injury. Initial computed tomography of the temporal bone showed a simple temporal bone fracture with no other associated abnormalities...
March 17, 2017: European Annals of Otorhinolaryngology, Head and Neck Diseases
https://www.readbyqxmd.com/read/28285827/our-auditory-results-using-the-vibrant-soundbridge-on-the-long-process-of-the-incus-20-years-of-data
#14
Anaïs Grégoire, Jean-Philippe Van Damme, Chantal Gilain, Benoit Bihin, Pierre Garin
OBJECTIVE: After 20 years of experience with different types of middle ear implants, we analyzed our database about the Vibrant Soundbridge (VSB) to know the rate of complications, the effect on the residual hearing and the audiometric gain in our center. METHOD: The study was retrospective and included all VSB implants bound to the long process of the incus in our tertiary medical center between january 1999 and february 2015. We observed the effect of surgery on residual hearing by comparing bone and air conduction thresholds before and after implantation...
March 9, 2017: Auris, Nasus, Larynx
https://www.readbyqxmd.com/read/28274902/revision-stapedectomy-with-necrosis-of-the-long-process-of-the-incus-does-the-degree-of-necrosis-matter-a-retrospective-clinical-study
#15
Mohamed Ghonim, Yousef Shabana, Bassem Ashraf, Mohamed Salem
OBJECTIVE: To discuss the different modalities for managing necrosis of the long process of the incus in revision stapedectomy on the basis of the degree of necrosis and compare the results with those reported in the literature. MATERIALS AND METHODS: Thirty-six patients underwent revision stapedectomy with the necrosis of the long process of the incus from 2009 to 2016. The patients were divided into three groups on the basis of the degree of necrosis. For group A (minimal necrosis), augmentation technique with bone cement was performed...
March 9, 2017: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/28273957/morphological-variations-of-middle-ear-ossicles-and-its-clinical-implications
#16
Ritaban Saha, Phalguni Srimani, Ardhendu Mazumdar, Sibani Mazumdar
INTRODUCTION: The middle ear ossicles form a semi rigid chain in the middle of the ear for conduction and amplification of sound waves from the tympanic membrane to the inner ear. Although, our knowledge of the ear ossicles dates back to the 15(th) century, and various studies have been carried out on their morphometry, morphology, anomalies, embryology, function and structure throughout the world, information about the morphology of middle ear ossicles is meagre in Indian subjects. AIM: To find out the morphological variations of middle ear ossicles of right and left sides...
January 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28244845/incidence-10-year-recidivism-rate-and-prognostic-factors-for-cholesteatoma
#17
A Britze, M L Møller, T Ovesen
OBJECTIVE: Cholesteatoma patients have a high risk of recurrence with complications, and knowledge exchange is a prerequisite for improving treatment. This study aimed to apply appropriate statistics to provide meaningful and transferable results from cholesteatoma surgery, to highlight independent prognostic factors, and to assess the incidence rate. METHODS: Incidence rates were assessed for the district of Aarhus, Denmark. From 147 patients operated on mainly with canal wall up mastoidectomies for debuting cholesteatomas, 10-year Kaplan-Meier recidivism rates were calculated and independent prognostic factors for the recidivism were identified by Cox multivariate regression analyses...
April 2017: Journal of Laryngology and Otology
https://www.readbyqxmd.com/read/28219477/autologous-incus-versus-titanium-partial-ossicular-replacement-prosthesis-in-reconstruction-of-austin-type-a-ossicular-defects-a-prospective-randomised-clinical-trial
#18
RANDOMIZED CONTROLLED TRIAL
Naragund Amith, Mudhol Rs
OBJECTIVE: This study aimed to compare the functional and anatomical outcomes of ossiculoplasty using an autograft incus or a titanium partial ossicular replacement prosthesis for reconstructing Austin type A ossicular defects. METHODS: Patients with Austin A ossicular defects were randomly divided into two groups: one group underwent ossiculoplasty with an autologous incus (the autologous incus group) and the other underwent ossiculoplasty with a titanium partial ossicular replacement prosthesis (the titanium prosthesis group)...
May 2017: Journal of Laryngology and Otology
https://www.readbyqxmd.com/read/28140829/the-petrosquamous-stalactite
#19
Michael D Puricelli, Maxwell D Newby, Andrew J Fishman, Arnaldo L Rivera
Objective To define the presence and relationship of the petrosquamous stalactite (PsS)-a condensation of the trabecular Korner's septum into a bony plate of the petrosquamous suture-to surrounding structures and understand its surgical implications. Study Design Series of cadaver dissections. Setting University of Missouri Alumni Temporal Bone and Microvascular Laboratory. Subjects and Methods Anatomic dissections were conducted on 15 consecutive formalin-preserved and frozen adult human temporal bones. A calibrated Dino-Lite Premier Digital Microscope was used to photograph dissections of each bone...
March 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28117786/dissection-of-the-auditory-bulla-in-postnatal-mice-isolation-of-the-middle-ear-bones-and-histological-analysis
#20
Ayako Sakamoto, Yukiko Kuroda, Sho Kanzaki, Koichi Matsuo
In most mammals, auditory ossicles in the middle ear, including the malleus, incus and stapes, are the smallest bones. In mice, a bony structure called the auditory bulla houses the ossicles, whereas the auditory capsule encloses the inner ear, namely the cochlea and semicircular canals. Murine ossicles are essential for hearing and thus of great interest to researchers in the field of otolaryngology, but their metabolism, development, and evolution are highly relevant to other fields. Altered bone metabolism can affect hearing function in adult mice, and various gene-deficient mice show changes in morphogenesis of auditory ossicles in utero...
January 4, 2017: Journal of Visualized Experiments: JoVE
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