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Stapes prosthesis

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https://www.readbyqxmd.com/read/28604579/how-to-avoid-a-learning-curve-in-stapedotomy-a-standardized-surgical-technique
#1
Pingling Kwok, Otto Gleich, Katharina Dalles, Elisabeth Mayr, Peter Jacob, Jürgen Strutz
OBJECTIVE: To evaluate, whether a learning curve for beginners in stapedotomy can be avoided by using a prosthesis with thermal memory-shape attachment in combination with a standardized laser-assisted surgical technique. STUDY DESIGN: Retrospective case review. SETTING: Tertiary referral center. PATIENTS: Fifty-eight ears were operated by three experienced surgeons and compared with a group of 12 cases operated by a beginner in stapedotomy...
June 9, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28561306/stapes-prosthesis-length-and-hearing-outcomes
#2
Qasim Husain, Kenny F Lin, Samuel H Selesnick
OBJECTIVES: First, to determine if prosthesis length plays a role in optimizing successful hearing outcomes in stapedotomy surgery; and second, to determine if patient factors such as height are correlated with prosthesis length. STUDY DESIGN: Retrospective chart review. METHODS: Retrospective chart review of patients undergoing stapedotomy surgeries with adequate follow up. Length of prosthesis, pre-/postoperative audiograms, and follow-up data were obtained...
May 31, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28542633/new-chamber-stapes-prosthesis-a-preliminary-assessment-of-the-functioning-of-the-prototype
#3
Monika Kwacz, Magdalena Sołyga, Maciej Mrówka, Konrad Kamieniecki
Piston-stapedotomy is the most common method for hearing restoration in patients with otosclerosis. In this study, we have experimentally examined a prototype of a new chamber stapes prosthesis. The prototype was implanted in a human cadaver temporal bone. The round window vibrations before and after implantation were measured for the acoustic signal (90 dB SPL, 0.8-8 kHz) in the external auditory canal. In comparison with a 0.4-mm piston prosthesis, the chamber prosthesis induced significantly higher vibration of the round window, especially for frequencies above 1...
2017: PloS One
https://www.readbyqxmd.com/read/28508715/data-and-reporting-quality-in-tympanoplasty-and-ossiculoplasty-studies
#4
Susen Lailach, Thomas Zahnert, Marcus Neudert
Objective The objective of our study was to check the documentation of hearing outcome parameters and influencing factors (surgical, pathological, and methodological) in published literature evaluating hearing outcome after tympanoplasty. We aimed to assess how effectively the American Academy of Otolaryngology-Head and Neck Surgery (AAO-HNS) 1995 guidelines were applied. Study Design Retrospective noncontrolled study. Setting Ear research center. Subjects and Methods This study was based on a PubMed research, including peer-reviewed English-speaking original studies published from January 2005 to December 2015...
May 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28463590/systematic-review-of-ossicular-chain-anatomy-strategic-planning-for-development-of-novel-middle-ear-prostheses
#5
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/28462609/the-effects-of-double-gloving-on-microsurgical-skills
#6
Scott A Hardison, Grace Pyon, Audrey Le, Wen Wan, Daniel H Coelho
Objective To determine whether double gloving would negatively affect participants' ability to perform a simulated microsurgical task. Study Design Randomized single-blinded controlled crossover trial. Setting Temporal bone laboratory of an academic otolaryngology department. Subjects and Methods This study involved the simulated insertion of a stapes prosthesis into a model of the ossicular chain under microscopy. Forty-one participants were recruited from our medical and dental school and randomized into 2 groups...
April 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28439694/modifications-to-a-3d-printed-temporal-bone-model-for-augmented-stapes-fixation-surgery-teaching
#7
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/28350269/review-of-a-single-surgeon-s-stapedotomy-cases-performed-with-a-nickel-titanium-prosthesis-over-a-14-year-period
#8
Natalie Justicz, Kaitlyn F Strickland, Kevin K Motamedi, Douglas E Mattox
CONCLUSION: Stapes surgery with a nickel titanium prosthesis is a safe and well-tolerated procedure that leads to a significant improvement in hearing outcomes. OBJECTIVE: To identify the efficacy and safety of stapedotomy procedures performed with a nickel titanium prosthesis for patients with otosclerosis. METHODS: A review of 431 unique stapedotomies performed over 14 years by a single surgeon at an academic tertiary care center yielded 312 cases with nickel titanium prosthesis that met inclusion criteria of otosclerosis diagnosis, initial surgery in operative ear, and presence of pre-operative and post-operative audiograms...
April 2017: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/28274901/a-comparison-study-of-partial-ossicular-reconstruction-prosthesis-porp-placement-under-the-malleus-or-tympanic-membrane-graft-in-the-presence-of-the-malleus
#9
Ahmet Mutlu, Özlem Topdağ, Murat Topdağ, Mete İşeri, Selvet Erdoğan
OBJECTIVE: The aim of this study was to compare the hearing results of embedding the partial ossicular reconstruction prosthesis (PORP) underneath the malleus with the malleus relocation technique and tympanic membrane graft in the presence of the malleus. MATERIALS AND METHODS: A retrospective review of patient charts and audiometric results in a tertiary referral center was conducted. In total, 83 patients who underwent intact canal tympanoplasty with mastoidectomy between 2010 and 2015 were included and divided into two different groups: malleus assembly to the stapes head (MASH) and tympanic membrane assembly to the stapes head (TASH)...
March 9, 2017: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/28273957/morphological-variations-of-middle-ear-ossicles-and-its-clinical-implications
#10
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/28229059/comparison-of-fluoroplastic-causse-loop-piston-and-titanium-soft-clip-in-stapedotomy
#11
Mohammad Faramarzi, Nafiseh Gilanifar, Sareh Roosta
INTRODUCTION: Different types of prosthesis are available for stapes replacement. Because there has been no published report on the efficacy of the titanium soft-clip vs the fluoroplastic Causse loop Teflon piston, we compared short-term hearing results of both types of prosthesis in patients who underwent stapedotomy due to otosclerosis. MATERIALS AND METHODS: A total of 57 ears were included in the soft-clip group and 63 ears were included in the Teflon-piston group...
January 2017: Iranian Journal of Otorhinolaryngology
https://www.readbyqxmd.com/read/28079680/middle-ear-sound-transmission-under-normal-damaged-repaired-and-reconstructed-conditions
#12
Wei Dong, Ying Tian, Xin Gao, Timothy T K Jung
HYPOTHESIS: We hypothesize that current clinical treatment strategies for the disarticulated or eroded incus have the effect of combining the incus and stapes of the human middle ear (ME) into one rigid structure, which, while capable of adequately transmitting lower-frequency sounds, fails for higher frequencies. BACKGROUND: ME damage causes conductive hearing loss (CHL) and while great progress has been made in repairing or reconstructing damaged MEs, the outcomes are often far from ideal...
April 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28068300/early-postoperative-imaging-of-the-labyrinth-by-cone-beam-ct-after-stapes-surgery-for-otosclerosis-with-correlation-to-audiovestibular-outcome
#13
Aurélie Vandevoorde, Marc T Williams, Elsa Ukkola-Pons, Mary Daval, Denis Ayache
BACKGROUND: Sensorineural complications of stapes surgery are rare but potentially serious. Imaging is usually performed to identify an underlying cause, such as excessive intravestibular penetration of the prosthesis or pneumolabyrinth suggesting perilymphatic fistula. Unfortunately, there is very little data in an unselected series of uneventful patients.The aim of this study was to analyze the depth of prosthesis penetration within the vestibule and the rate of pneumolabyrinth the day or the day after the procedure by performing a cone beam computed tomography of the temporal bone in a cohort of unselected patients, and to correlate imaging findings to clinical outcome...
February 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/27861302/steerable-robot-assisted-micromanipulation-in-the-middle-ear-preliminary-feasibility-evaluation
#14
Rashid Yasin, Brendan P O'Connell, Haoran Yu, Jacob B Hunter, George B Wanna, Alejandro Rivas, Nabil Simaan
HYPOTHESIS: The use of a robotic manipulator with a dexterously orientable gripper will expand the ability of middle ear surgeons to perform precise tasks and access otherwise challenging anatomic regions. BACKGROUND: Middle ear surgery presents unique challenges because of the constrained operative space and limited access to certain anatomic regions. METHODS: A custom-designed robot with a sideways-reaching gripper was used to evaluate feasibility of manipulation tasks in different middle-ear anatomical zones...
February 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/27809651/early-functional-results-using-the-nitibond-prosthesis-in-stapes-surgery
#15
Giuseppina Canu, Fulvio Lauretani, Francesca Yoshie Russo, Evelyne Ferrary, Georges Lamas, Olivier Sterkers, Daniele De Seta, Daniele Bernardeschi
CONCLUSION: The NiTiBOND(®) prosthesis allows early results to be obtained similar to those with a manually crimped prosthesis fitted by experienced surgeons, thus reducing the learning curve in this critical step of the procedure. OBJECTIVE: To analyze the 1-month results using the nitinol NiTiBOND(®) prosthesis in primary otosclerosis surgery and to compare the results with those obtained with fully fluoroplastic or fully titanium pistons. MATERIALS AND METHODS: Fifty consecutive cases operated on with the NiTiBOND(®) prosthesis (nitinol group) were compared with 50 cases operated on with a fully fluoroplastic piston (fluoroplastic group), and with 131 cases operated on with a fully titanium piston (first titanium group), and also with 50 cases operated on with the same titanium piston just before using the NiTiBOND(®) piston (last titanium group)...
March 2017: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/27749749/a-new-intraoperative-real-time-monitoring-system-for-reconstructive-middle-ear-surgery-an-experimental-and-clinical-feasibility-study
#16
Thomas Zahnert, Marie-Luise Metasch, Hannes Seidler, Matthias Bornitz, Nicoloz Lasurashvili, Marcus Neudert
HYPOTHESIS: Electromagnetical excitation of ossicular vibration is suitable for middle ear transmission measurements in the experimental and clinical setting. Thereby, it can be used as a real-time monitoring system for quality control in ossiculoplasty. BACKGROUND: Positioning and coupling of middle ear prosthesis are a precondition for good postoperative hearing results, but at the same time completely dependent upon the surgeon's subjective judgment during surgery...
December 2016: Otology & Neurotology
https://www.readbyqxmd.com/read/27663221/ossiculoplasty-in-chronic-otitis-media-surgical-results-and-prognostic-factors-of-surgical-success
#17
Ana Castro Sousa, Vânia Henriques, Jorge Rodrigues, Rui Fonseca
BACKGROUND AND OBJECTIVES: The goal of ossiculoplasty is to improve hearing. Successful ossiculoplasty depends on several factors. This retrospective study was carried out to analyze hearing results of ossiculoplasty in ears with chronic otitis media (COM) and evaluate clinical outcomes and factors predictive of hearing improvement. SUBJECTS AND METHODS: We reviewed the results of 153 patients with COM (with cholesteatoma (COMC) and without cholesteatoma (COMWC)) who underwent ossiculoplasty between January of 2002 to December of 2011...
September 20, 2016: Acta Otorrinolaringológica Española
https://www.readbyqxmd.com/read/27648330/abnormal-congenital-location-of-stapes-superstructure-clinical-and-embryological-implications
#18
Vânia Henriques, Rafaela Teles, Ana Sousa, Roberto Estevão, Jorge Rodrigues, Alexandra Gomes, Francisco Silva, Ângelo Fernandes, Fausto Fernandes
Congenital middle ear malformations are rare. Most part of them are usually associated with other malformations, such as aural atresia, microtia, and dysmorphic craniofacial features. A clinical case of a 24-year-old male with a right-sided conductive hearing loss since his childhood, without craniofacial malformation, is presented. He was proposed for exploratory tympanotomy under the suspicious diagnosis of otosclerosis. The surgery revealed an abnormal location of stapes' superstructure, which was attached to the promontory and had an isolated and mobile osseous footplate in the oval window...
2016: Case Reports in Otolaryngology
https://www.readbyqxmd.com/read/27642666/the-effect-of-piston-diameter-in-stapedotomy-for-otosclerosis-a-temporal-bone-model
#19
Inge Wegner, Mostafa M A S Eldaebes, Thomas G Landry, Wilko Grolman, Manohar L Bance
HYPOTHESIS: The use of larger-diameter pistons in stapedotomy leads to better hearing outcomes compared with the use of smaller-diameter pistons. There is an interaction between stapes piston diameter and fenestration diameter. BACKGROUND: Otosclerosis can be treated surgically by removing part of the stapes and bypassing the stapes footplate with a prosthesis. Available piston shaft diameters range between 0.3 and 0.8 mm. There has been a tendency toward the use of smaller-diameter pistons, because of a suspected decreased risk of cochlear trauma and subsequent sensorineural hearing loss (SNHL) with smaller pistons...
December 2016: Otology & Neurotology
https://www.readbyqxmd.com/read/27631661/impact-of-prosthesis-length-on-tympanic-membrane-s-and-annular-ligament-s-stiffness-and-the-resulting-middle-ear-sound-transmission
#20
Marcus Neudert, Matthias Bornitz, Nikoloz Lasurashvili, Uwe Schmidt, Thomas Beleites, Thomas Zahnert
HYPOTHESIS: Prosthesis' length creates tension in ossicular reconstructions, which directly effects the middle ear sound transmission. BACKGROUND: Relatively long prostheses are often used to stabilize the middle ear reconstruction to prevent dislocation. Thereby, tension on the flexible components such as the tympanic membrane (TM) and the annular ligament (AL) is increased. Only little is known on the amount of displacement-related stiffening of the TM and AL, as well as the consecutive reduction in middle ear transfer function (METF)...
October 2016: Otology & Neurotology
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