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https://www.readbyqxmd.com/read/28420248/creating-an-optimal-3d-printed-model-for-temporal-bone-dissection-training
#1
Kuniyuki Takahashi, Yuka Morita, Shinsuke Ohshima, Shuji Izumi, Yamato Kubota, Yutaka Yamamoto, Sugata Takahashi, Arata Horii
OBJECTIVE: Making a 3-dimensional (3D) temporal bone model is simple using a plaster powder bed and an inkjet printer. However, it is difficult to reproduce air-containing spaces and precise middle ear structures. The objective of this study was to overcome these problems and create a temporal bone model that would be useful both as a training tool and for preoperative simulation. METHODS: Drainage holes were made to remove excess materials from air-containing spaces, ossicle ligaments were manually changed to bony structures, and small and/or soft tissue structures were colored differently while designing the 3D models...
April 1, 2017: Annals of Otology, Rhinology, and Laryngology
https://www.readbyqxmd.com/read/28414695/imaging-criteria-to-predict-surgical-difficulties-during-stapes-surgery
#2
Claire Parra, Stéphanie Trunet, Benjamin Granger, Yann Nguyen, Georges Lamas, Daniele Bernardeschi, Rémi Hervochon, Frédéric Tankere
BACKGROUND AND PURPOSE: Stapes surgery for otosclerosis can be challenging if access to the oval window niche is restricted. The aim of this study was to determine the accuracy of the computed tomographic (CT) scan in the evaluation of anatomical distances, and to analyze its reliability in predicting surgical technical difficulties. MATERIAL AND METHODS: A total of 96 patients (101 ears) were enrolled in a prospective study between 2012 and May 2015. During surgery, we evaluated the distance D1 between the stapes and the facial nerve, distance D2 between the promontory and the facial nerve after ablation of the superstructure, and the intraoperative discomfort of the surgeon...
April 13, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28401629/a-1-470%C3%A2-nm-diode-laser-in-stapedotomy-mechanical-thermal-and-acoustic-effects
#3
Simone P C Koenraads, Tjeerd de Boorder, Wilko Grolman, Digna M A Kamalski
BACKGROUND AND OBJECTIVES: Multiple laser systems have been investigated for their use in stapes surgery in patients with otosclerosis. The diode 1,470 nm laser used in this study is an attractive laser system because it is easily transported and relatively inexpensive in use. This wavelength has relative high absorption in water. This study aimed to investigate the mechanical, thermal, and acoustic effects of the diode 1,470 nm laser on a stapes in an inner ear model. MATERIALS AND METHODS: Experiments were performed in an inner ear model including fresh frozen human stapes...
April 11, 2017: Lasers in Surgery and Medicine
https://www.readbyqxmd.com/read/28397279/change-of-somatosensory-function-of-the-tongue-caused-by-chorda-tympani-nerve-disorder-after-stapes-surgery
#4
Emi Maeda, Hirokazu Katsura, Tomomi Nin, Akiko Sakaguchi-Fukunaga, Yasuo Mishiro, Masafumi Sakagami
OBJECTIVES: Patients after middle ear surgery often complain of taste disturbance and a lingual numbness. The purpose of this study was to objectively assess changes in the somatosensation of the tongue and taste function in patients undergoing stapes surgery. STUDY DESIGN: Prospective study. METHODS: Symptoms of taste disturbance and tongue numbness after surgery were investigated before and after surgery in 41 patients (13 males, 28 females; mean age 41...
April 11, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28390810/dizziness-malpractice-and-the-otolaryngologist
#5
Anthony M Tolisano, Sungjin A Song, Douglas S Ruhl, Philip D Littlefield
PURPOSE: To assess malpractice claims related to the management of dizziness in otolaryngology in order to improve care and minimize the risk of litigation. MATERIALS AND METHODS: This is a retrospective review of the LexisNexis "Jury Verdicts and Settlements" database. All lawsuits and out of court adjudications related to the management of dizziness by otolaryngologists were collected. Data including patient demographics, plaintiff allegation, procedure performed, and indemnities were analyzed...
March 31, 2017: American Journal of Otolaryngology
https://www.readbyqxmd.com/read/28390607/endoscopic-middle-ear-exploration-in-pediatric-patients-with-conductive-hearing-loss
#6
John M Carter, Stephen R Hoff
OBJECTIVE: To describe our indications, findings, and outcomes for transcanal endoscopic middle ear exploration in pediatric patients with conductive hearing loss of unknown etiology, without effusions. METHODS: Prospective case series for all pediatric patients undergoing totally endoscopic transcanal middle ear exploration between April 2012 and October 2015 at a pediatric tertiary care referral hospital. Demographic data, operative findings, and hearing results were reviewed...
May 2017: International Journal of Pediatric Otorhinolaryngology
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
#7
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/28330387/helen-stapely-ross-edd-mph-1921-2016
#8
Kathleen M Roe, Daniel P Perales
No abstract text is available yet for this article.
April 2017: Health Education & Behavior: the Official Publication of the Society for Public Health Education
https://www.readbyqxmd.com/read/28327301/dentin-bond-optimization-using-the-dimethyl-sulfoxide-wet-bonding-strategy-a-2-year-in-vitro-study
#9
Thiago Henrique Scarabello Stape, Leo Tjäderhane, Arzu Tezvergil-Mutluay, Cristiane Rumi Fujiwara Yanikian, Anna Luiza Szesz, Alessandro Dourado Loguercio, Luís Roberto Marcondes Martins
OBJECTIVE: This study evaluated a new approach, named dimethyl sulfoxide (DMSO)-wet bonding, to produce more desirable long-term prospects for the ultrafine interactions between synthetic polymeric biomaterials and the inherently hydrated dentin substrate. METHODS: Sound third molars were randomly restored with/without DMSO pretreatment using a total-etch (Scocthbond Multipurpose: SBMP) and a self-etch (Clearfil SE Bond: CF) adhesive systems. Restored teeth (n=10)/group were sectioned into sticks and submitted to different analyses: micro-Raman determined the degree of conversion inside the hybrid layer (DC); resin-dentin microtensile bond strength and fracture pattern analysis at 24h, 1year and 2 years of aging; and nanoleakage evaluation at 24h and 2 years...
December 2016: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/28320600/tympanometry-and-isolated-fracture-of-the-stapes
#10
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/28319495/endoscopic-stapes-surgery-a-comparison-with-microscopic-surgery
#11
Rhona Sproat, Constantina Yiannakis, Arunachalam Iyer
OBJECTIVE: To investigate postoperative audiological outcomes and complication rates for fully endoscopic and microscopic stapes surgery carried out by a single surgeon in one center. PATIENTS: All patients having undergone endoscopic and non-endoscopic stapes surgery for otosclerosis from September 2009 to August 2016 under a single surgeon. INTERVENTION(S): Stapedotomy using either an operating microscope or endoscope for visualization. Stapedotomy was carried out using a standard approach...
March 17, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28318810/incomplete-partition-type-iii-a-rare-and-difficult-cochlear-implant-surgical-indication
#12
Levent Sennaroğlu, Münir Demir Bajin
OBJECTIVE: Presenting the clinical features and treatment options for incomplete partition type-III. METHODS: Nine primary and 1 revision incomplete partition type-III cochlear implant cases treated between 2004 and 2015 in Hacettepe University Department of Otolaryngology were included in the study. Treatment options and particularly cochlear implantation tecnique were described. RESULTS: Nine primary and 1 revison cases were all succesfully implanted...
March 16, 2017: Auris, Nasus, Larynx
https://www.readbyqxmd.com/read/28316289/post-stapedectomy-granuloma-a-devastating-complication
#13
E Watts, H R F Powell, S R Saeed, R M Irving
OBJECTIVES: This paper reports three cases of severe post-stapedectomy granuloma, emphasising the variable presentation of this devastating complication and the challenges of its management. METHODS: A retrospective review was conducted of three cases of post-stapedectomy granuloma requiring surgical debulking between 2010 and 2015. Clinical symptoms, serial imaging, histopathology and post-operative outcomes were considered. RESULTS: Intra-operatively, extensive granulation tissue with erosion of the otic capsule was found...
March 20, 2017: Journal of Laryngology and Otology
https://www.readbyqxmd.com/read/28285424/stapes-surgery-in-sweden-evaluation-of-a-national-based-register
#14
Karin Strömbäck, Lars Lundman, Andreas Bjorsne, Joakim Grendin, Anna Stjernquist-Desatnik, Ylva Dahlin-Redfors
The aim of the National Quality Registries is to monitor the outcome of healthcare given to patients. The Swedish Quality register for otosclerosis surgery is one of the nine official national registers for ear, nose and throat diseases in Sweden. Since 2004, surgical and audiological results and patient satisfaction scores have been systematically collected from a majority of the ear, nose and throat clinics performing stapes surgery in Sweden. The results of 1688 patients who underwent primary operations for otosclerosis were evaluated for 24 out of totally 26 clinics performing stapes surgery, between 2004 and 2010...
March 11, 2017: European Archives of Oto-rhino-laryngology
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
#15
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
#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/28269610/middle-and-inner-ear-modelling-from-microct-images-to-3d-reconstruction-and-coupling-of-models
#17
N S Tachos, A I Sakellarios, G Rigas, V Isailovic, G Ni, F Bohnke, N Filipovic, T Bibas, D I Fotiadis
We present finite element (FE) modeling approaches of ear mechanics including 3-dimensional (3D) reconstruction of the human middle and inner ear. Specifically, we demonstrate a semi-automatic methodology for the 3D reconstruction of the inner ear structures, a FE harmonic response model of the middle ear to predict the stapes footplate frequency response, a 2D FE slice model of the cochlea for the coupled response at the micromechanical level for either acoustic or electrical excitation and a coupled FE middle ear model with a simplified cochlea box model to simulate the basilar membrane velocity in response to acoustic excitation...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28244845/incidence-10-year-recidivism-rate-and-prognostic-factors-for-cholesteatoma
#18
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/28229059/comparison-of-fluoroplastic-causse-loop-piston-and-titanium-soft-clip-in-stapedotomy
#19
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/28227868/middle-and-inner-ear-modelling-from-microct-images-to-3d-reconstruction-and-coupling-of-models
#20
N S Tachos, A I Sakellarios, G Rigas, V Isailovic, G Ni, F Bohnke, N Filipovic, T Bibas, D I Fotiadis, N S Tachos, A I Sakellarios, G Rigas, V Isailovic, G Ni, F Bohnke, N Filipovic, T Bibas, D I Fotiadis, A I Sakellarios, V Isailovic, D I Fotiadis, A Bibas, F Bohnke, G Ni, N Filipovic, G Rigas, N S Tachos
We present finite element (FE) modeling approaches of ear mechanics including 3-dimensional (3D) reconstruction of the human middle and inner ear. Specifically, we demonstrate a semi-automatic methodology for the 3D reconstruction of the inner ear structures, a FE harmonic response model of the middle ear to predict the stapes footplate frequency response, a 2D FE slice model of the cochlea for the coupled response at the micromechanical level for either acoustic or electrical excitation and a coupled FE middle ear model with a simplified cochlea box model to simulate the basilar membrane velocity in response to acoustic excitation...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
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