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https://www.readbyqxmd.com/read/29748449/risk-factors-of-tympanoplasties-in-long-term-observation
#1
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/29681055/reproducing-the-internal-and-external-anatomy-of-fossil-bones-two-new-automatic-digital-tools
#2
Antonio Profico, Stefan Schlager, Veronica Valoriani, Costantino Buzi, Marina Melchionna, Alessio Veneziano, Pasquale Raia, Jacopo Moggi-Cecchi, Giorgio Manzi
OBJECTIVES: We present two new automatic tools, developed under the R environment, to reproduce the internal and external structures of bony elements. The first method, Computer-Aided Laser Scanner Emulator (CA-LSE), provides the reconstruction of the external portions of a 3D mesh by simulating the action of a laser scanner. The second method, Automatic Segmentation Tool for 3D objects (AST-3D), performs the digital reconstruction of anatomical cavities. MATERIALS AND METHODS: We present the application of CA-LSE and AST-3D methods to different anatomical remains, highly variable in terms of shape, size and structure: a modern human skull, a malleus bone, and a Neanderthal deciduous tooth...
April 21, 2018: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/29669196/development-of-the-human-incus-with-special-reference-to-the-detachment-from-the-chondrocranium-to-be-transferred-into-the-middle-ear
#3
Jose Francisco Rodríguez-Vázquez, Masahito Yamamoto, Shinichi Abe, Yukio Katori, Gen Murakami
The mammalian middle ear represents one of the most fundamental features defining this class of vertebrates. However, the origin and the developmental process of the incus in the human remains controversial. The present study seeks to demonstrate all the steps of development and integration of the incus within the middle ear. We examined histological sections of 55 human embryos and foetuses at 6 to 13 weeks of development. At 6 weeks of development (16 Carnegie Stage), the incus anlage was found to be lateral to this vein at the cranial end of the first pharyngeal arch...
April 18, 2018: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/29658107/malleostapedotomy-in-stapes-revision-surgery-is-an-endoscopic-approach-possible
#4
Giannicola Iannella, Diletta Angeletti, Alessandra Manno, Benedetta Pasquariello, Massimo Re, Giuseppe Magliulo
OBJECTIVES/HYPOTHESIS: The purpose of the present study was to show our preliminary results regarding the endoscopic ear surgery application in malleostapedotomy surgery. STUDY DESIGN: Case series. METHODS: Six patients (four females and two males) who underwent endoscopic ear surgery as revision surgery for otosclerosis were enrolled in this study. For endoscopic malleostapedotomy surgery, rigid angled endoscopes at 0 ° and 30 ° with a length of 14 cm and an outer diameter of 3 and 4 mm were used...
April 15, 2018: Laryngoscope
https://www.readbyqxmd.com/read/29544621/la-ferrassie-1-new-perspectives-on-a-classic-neandertal
#5
Asier Gómez-Olivencia, Rolf Quam, Nohemi Sala, Morgane Bardey, James C Ohman, Antoine Balzeau
The La Ferrassie 1 (LF1) skeleton, discovered over a century ago, is one of the most important Neandertal individuals both for its completeness and due to the role it has played historically in the interpretation of Neandertal anatomy and lifeways. Here we present new skeletal remains from this individual, which include a complete right middle ear ossicular chain (malleus, incus, and stapes), three vertebral fragments, and two costal remains. Additionally, the study of the skeleton has allowed us to identify new pathological lesions, including a congenital variant in the atlas, a greenstick fracture of the left clavicle, and a lesion in a mid-thoracic rib of unknown etiology...
April 2018: Journal of Human Evolution
https://www.readbyqxmd.com/read/29516059/audiological-results-of-endoscopic-surgical-repair-of-the-long-process-of-incus
#6
Badi Aldosari, Jean-Marc Thomassin
Objective: The purpose of this study is to evaluate our experience with endoscopic repair of ossicular discontinuity at the incudostapedial joint, with or without an intact stapes suprastructure, and present our hearing results. We classify results based on the causative pathology, the type of ossiculoplasty, and type of lesion. We demonstrate the ability to endoscopically place a total ossicular replacement prosthesis (TORP), measuring 4.25 mm, between the stapes footplate and the incus remnant to reestablish ossicular continuity...
September 2017: World Journal of Otorhinolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/29508055/endoscopic-visualization-to-the-anterior-surface-of-the-malleus-and-tensor-tympani-tendon-in-congenital-cholesteatoma
#7
Bong Jik Kim, Jung Ho Kim, Moo Kyun Park, Jun Ho Lee, Seung-Ha Oh, Myung-Whan Suh
PURPOSE: This study evaluated the feasibility of endoscopy in exposing the anterior surface of the malleus and tensor tympani tendon (ASMT) in children with congenital cholesteatoma (CC), and investigated the outcomes of hearing, postoperative complications, and residual or recurrent disease in endoscopic surgical approach cases. METHODS: A retrospective case review was performed in one tertiary referral center. Twelve children with CC involving the ASMT were recruited, and their medical records were reviewed...
May 2018: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/29502435/ossicular-chain-reconstruction-in-a-developing-country
#8
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/29467266/oldest-known-multituberculate-stapes-suggests-an-asymmetric-bicrural-pattern-as-ancestral-for-multituberculata
#9
Julia A Schultz, Irina Ruf, Thomas Martin
Middle ear ossicles (malleus, incus, stapes) are known for few multituberculate taxa, and three different stapedial morphotypes have been suggested: (i) slender, columelliform and microperforate, (ii) robust and rod-like, and (iii) bicrural. Reinvestigation of Upper Jurassic (Kimmeridgian) mammalian petrosals from the Guimarota coal mine in central Portugal (Western Europe) revealed an asymmetric bicrural stapes (ABS) in the paulchoffatiid Pseudobolodon oreas The middle ear ossicles displaced inside the osseous vestibule were detected by a µCT analysis...
February 28, 2018: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/29456948/is-routine-use-of-high-resolution-computerized-tomography-of-temporal-bone-in-patients-of-atticoantral-chronic-suppurative-otitis-media-without-intracranial-complications-justified
#10
Meeta Bathla, Hiren Doshi, Atul Kansara
Role of high resolution computerized tomography (HRCT) of temporal bone is established in cases of atticoantral chronic suppurative otitis media (CSOM) with intracranial complications. Routine use of HRCT in management of patients of atticoantral CSOM without intracranial complications has been an issue of debate. The aim of this study was to evaluate the routine use of HRCT of temporal bone in such cases. This study was a prospective study done at LG hospital, AMC MET Medical College, Ahmedabad to evaluate and compare the temporal bone findings in HRCT and intraoperative findings in 100 patients with atticoantral CSOM...
March 2018: Indian Journal of Otolaryngology and Head and Neck Surgery
https://www.readbyqxmd.com/read/29342039/an-optimal-partial-ossicular-prosthesis-should-connect-both-to-the-tympanic-membrane-and-malleus-a-temporal-bone-study-using-laser-doppler-vibrometry
#11
Anders Niklasson, Kilian Gladiné, Anton Rönnblom, Magnus von Unge, Joris Dirckx, Krister Tano
OBJECTIVE: To compare stapes vibrations in different partial ossicular replacement prosthesis (PORP) applications. METHODS: Stapedial vibrations were measured on fresh frozen human temporal bones with laser Doppler vibrometry. Eight different types of common ossiculoplasty methods were compared regarding recovery of stapes vibrations in relation with the normal ossicular chain. The PORPs were divided into three groups: 1) PORPs with the lateral contact only with the tympanic membrane, 2) PORPs with lateral contact only to the malleus handle, and 3) PORPs with lateral contact with both the malleus handle and the tympanic membrane...
March 2018: Otology & Neurotology
https://www.readbyqxmd.com/read/29313370/bilateral-ossicular-head-dehiscence-into-the-middle-cranial-fossa
#12
Sameer A Alvi, Joel W Jones, Jim Lin
OBJECTIVES: To describe a unique case of bilateral dehiscence of the malleus and incus heads into the middle fossa making contact with the temporal lobes, along with its clinical implications. METHODS: An analysis of a patient case and review of pertinent literature were performed. RESULTS: A patient with a history of right-sided mastoidectomy for cholesteatoma was evaluated for persistent conductive hearing loss. On computed tomography (CT) and magnetic resonance imaging (MRI), the patient had a complete dehiscence of the tegmen tympani on the right, with ossicular heads being located above the floor of the middle cranial fossa...
March 2018: Annals of Otology, Rhinology, and Laryngology
https://www.readbyqxmd.com/read/29229399/the-malleus-cap-anatomic-description-of-cartilage-of-the-lateral-process-of-the-malleus
#13
Elias Michaelides, Ankit Kansal, Sara Rutter, Christopher A Schutt
PURPOSE: To anatomically describe a cartilaginous cap attached to the lateral process of the malleus. STUDY DESIGN: Histologic and gross anatomic review. METHODS: Twenty temporal bones were histologically reviewed. The anatomical relationship between the tympanic membrane and malleus was then defined at the level of the lateral process of the malleus and the long process of the malleus. Separately, gross evaluation of these levels at the macroscopic level was undertaken through endoscopic imaging in five subjects...
October 25, 2017: American Journal of Otolaryngology
https://www.readbyqxmd.com/read/29205455/the-middle-and-inner-ears-of-the-palaeogene-golden-mole-namachloris-a-comparison-with-extant-species
#14
Matthew J Mason, Nigel C Bennett, Martin Pickford
Many living species of golden moles (Chrysochloridae) have greatly enlarged middle ear ossicles, believed to be used in the detection of ground vibrations through inertial bone conduction. Other unusual features of chrysochlorids include internally coupled middle ear cavities and the loss of the tensor tympani muscle. Our understanding of the evolutionary history of these characteristics has been limited by the paucity of fossil evidence. In this article, we describe for the first time the exquisitely preserved middle and inner ears of Namachloris arenatans from the Palaeogene of Namibia, visualised using computed tomography, as well as ossicles attributed to this species...
March 2018: Journal of Morphology
https://www.readbyqxmd.com/read/29201373/free-anterolateral-thigh-full-thickness-skin-flap-with-vascularized-lateral-femoral-cutaneous-nerve-for-the-reconstruction-of-facial-nerve-and-external-auditory-canal-after-the-resection-of-facial-nerve-schwannoma
#15
Ryo Karakawa, Mitsunaga Narushima, Shinya Ogishima, Hisako Hara, Shotaro Karino, Takuya Iida, Akinobu Kakigi, Isao Koshima
The complex reconstruction of nerves and soft tissue in the head and neck region is still challenging, especially in cases requiring external auditory canal reconstruction with facial nerve reconstruction. We report a case of left facial schwannoma extending into the external auditory canal beyond the tympanic membrane with facial paralysis in which the reconstruction of both the facial nerve and external auditory canal was successfully performed using an anterolateral thigh flap as a super-thin full-thickness skin flap, including vascularized lateral femoral cutaneous nerve...
2017: SAGE Open Medical Case Reports
https://www.readbyqxmd.com/read/29171281/complete-malleus-removal-for-cholesteatoma-a-multivariate-analysis-of-ossiculoplasty-success-and-residual-disease
#16
Scott Shapiro, Donald Bennett, Stephen Wetmore, Adam Cassis
OBJECTIVE: Determine the effect of complete malleus removal during canal wall up tympanomastoidectomy for cholesteatoma on ossiculoplasty success and rate of residual cholesteatoma. METHODS: We reviewed the operative, audiogram, and clinical reports of patients who underwent canal wall up tympanomastoidectomy for cholesteatoma between 2009 and 2016 at a tertiary academic medical center with at least 8 months of follow-up after surgery. To control for extent of disease, we independently catalogued the subsites of the middle ear and mastoid that cholesteatoma involved from each operation...
January 2018: Annals of Otology, Rhinology, and Laryngology
https://www.readbyqxmd.com/read/29132143/a-jurassic-gliding-euharamiyidan-mammal-with-an-ear-of-five-auditory-bones
#17
Gang Han, Fangyuan Mao, Shundong Bi, Yuanqing Wang, Jin Meng
Gliding is a distinctive locomotion type that has been identified in only three mammal species from the Mesozoic era. Here we describe another Jurassic glider that belongs to the euharamiyidan mammals and shows hair details on its gliding membrane that are highly similar to those of extant gliding mammals. This species possesses a five-boned auditory apparatus consisting of the stapes, incus, malleus, ectotympanic and surangular, representing, to our knowledge, the earliest known definitive mammalian middle ear...
November 23, 2017: Nature
https://www.readbyqxmd.com/read/29068074/the-anterior-process-of-the-malleus-in-extant-lagomorpha-mammalia
#18
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...
January 2018: Journal of Morphology
https://www.readbyqxmd.com/read/28989763/into-the-dark-patterns-of-middle-ear-adaptations-in-subterranean-eulipotyphlan-mammals
#19
Daisuke Koyabu, Misato Hosojima, Hideki Endo
Evolution of the middle ear ossicles was a key innovation for mammals, enhancing the transmission of airborne sound. Radiation into various habitats from a terrestrial environment resulted in diversification of the auditory mechanisms among mammals. However, due to the paucity of phylogenetically controlled investigations, how middle ear traits have diversified with functional specialization remains unclear. In order to identify the respective patterns for various lifestyles and to gain insights into fossil forms, we employed a high-resolution tomography technique and compared the middle ear morphology of eulipotyphlan species (moles, shrews and hedgehogs), a group that has radiated into various environments, such as terrestrial, aquatic and subterranean habitats...
September 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/28964300/anatomical-measurement-of-the-ossicles-in-patients-with-congenital-aural-atresia-and-stenosis
#20
Jieying Li, Keguang Chen, Chenlong Li, Dongming Yin, Tianyu Zhang, Peidong Dai
OBJECTIVES: Our aims were to measure and compare anatomical parameters of the ossicles in normal, congenital aural stenosis (CAS), and congenital aural atresia (CAA) ears. METHODS: This retrospective study was performed using three-dimensional reconstructed images derived from computed tomography scans of 20 normal subjects, 20 CAS patients, and 20 CAA patients. RESULTS: The lengths of the malleus handle and long process of the incus were greater in normal ears than in CAS and CAA ears (all P < 0...
October 2017: International Journal of Pediatric Otorhinolaryngology
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