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Xiaotian Wu, Joseph A Paydarfar, Ryan J Halter
For a variety of head and neck cancers, specifically those of the oropharynx, larynx, and hypopharynx, minimally invasive trans-oral approaches have been developed to reduce perioperative and long-term morbidity. However, in trans-oral surgical approaches anatomical deformation due to instrumentation, specifically placement of laryngoscopes and retractors, present a significant challenge for surgeons relying on preoperative imaging to resect tumors to negative margins. Quantifying the deformation due to instrumentation is needed in order to develop predictive models of operative deformation...
March 14, 2018: Annals of Biomedical Engineering
Suat Bilici, Ozgur Yigit, Ozlem Onerci Celebi, Ahmet Gorkem Yasak, Aytul Hande Yardimci
OBJECTIVE: To evaluate the relationship between the hyoid-related cephalometric measurements and the apnea-hypopnea index (AHI) in patients diagnosed with obstructive sleep apnea (OSA). METHODS: A total of 56 subjects were evaluated by lateral cephalometric radiography and polysomnography (PSG). The OSA diagnosis was made according to the patients' AHI. Included were 13 primary snoring, 16 mild OSA, 10 moderate OSA, and 17 severe OSA. C3-hyoid distance and mentum-hyoid distance were measured on lateral cephalogram...
March 13, 2018: Journal of Craniofacial Surgery
Fernando Peixoto Ferraz de Campos, Marcia Yoshie Kanegae, Vera Demarchi Aiello, Pedro José Dos Santos, Tatiane Carneiro Gratão, Erasmo Simão Silva
Central nervous system (CNS) ischemic events, besides being a common and devastating disease, are accompanied by severe disability and other morbidities. The cause of such events is not always that simple to diagnose, and among the young, a broad spectrum of possibilities should be considered. We present the case of a young man who presented two episodes of CNS ischemia with a 1 year gap between them, which occurred in the same situation while he was walking and carrying a heavy backpack. The second event first presented as a transient ischemic attack followed by a stroke the day after...
January 2018: Autopsy & Case Reports
Koopong Siribumrungwong, Chitpon Sinchai, Boonsin Tangtrakulwanich, Weera Chaiyamongkol
Study Design: A descriptive experimental study. Purpose: The purpose of this study was to describe the reliability and accuracy of palpable anterior neck landmarks (angle of the mandible, hyoid bone, thyroid cartilage, and cricoid cartilage) for the identification of cervical spinal levels in a slight neck-extended position as in anterior approach cervical spinal surgery. Overview of Literature: Standard, palpable anatomical landmarks for the identification of cervical spinal levels were described by Hoppenfeld using the midline palpable anterior structures (angle of the mandible [C2 body], hyoid bone [C3 body], thyroid cartilage [C4-C5 disc], cricoid cartilage [C6 body], and carotid tubercle [C6 body]) to determine the approximate level for skin incisions...
February 2018: Asian Spine Journal
K Natsis, M Piagkou, P Vrochidis, E Papadopoulou, N Lazaridis
A three-headed anterior belly of the digastric muscle (ABDM) on the right side of a 54-year old Greek male cadaver coexisted with two accessory muscle bundles (AMB) in the submental region. The left ABDM was typical. Typical ABDM was attached to the digastric fossa, while the accessory right anterior bellies to the lower border of the mandible. A muscle bundle arising from the attachment of the left ABDM to the hyoid bone was also observed fusing with the AMB of the ipsilateral side. It is of extreme importance to be aware of the submental region anatomical variations during surgery, imaging interpretation or differential diagnosis of neck masses...
February 26, 2018: Morphologie: Bulletin de L'Association des Anatomistes
Tahsin Tepecik, Ümit Ertaş, Metin Akgün
PURPOSE: The aim of this study was to examine the effects of bimaxillary orthognathic surgery on pharyngeal airway space (PAS) and respiratory function during sleep. MATERIALS AND METHODS: The subjects were 21 patients with class III skeletal relationship, and all of the patients underwent bimaxillary surgery (Le Fort I advancement and bilateral sagittal split ramus setback osteotomies simultaneously). Pharyngeal volumes of nasopharyngeal (V-NPA), retropalatal (V-RPA), retrolingual (V-RLA), oropharyngeal (V-ORO) and total pharyngeal airways (V-TOT); minimum axial areas of retropalatal (MA-RPA), retrolingual (MA-RLA) and oropharyngeal airways (MA-ORO); and position of the hyoid were studied in order to detect dimensional PAS changes using cone-beam computed tomography (CBCT) with Dolphin 11...
February 2, 2018: Journal of Cranio-maxillo-facial Surgery
Gil Graziani, Sigal Tal, Adi Adelman, Chen Kugel, Tali Bdolah-Abram, Alon Krispin
INTRODUCTION/BACKGROUND: Post-mortem CT (PMCT) is becoming an essential tool available to forensic pathologists worldwide, but its validity with respect to evidence for legal purposes still requires more comprehensive large-scale studies, comparing PMCT to autopsy. This article compares PMCT and autopsy findings of the head, neck, and spine during a period of five years. MATERIALS AND METHODS: The study included 203 cases for which both autopsy and PMCT were performed...
February 26, 2018: Journal of Forensic and Legal Medicine
Khaled Gamal Dahy, Katsu Takahashi, Kazuyuki Saito, Azumi Kakeno, Honoka Kiso, Yu Isobe, Sayaka Mishima, Keita Asai, Abd-Elmateen Moussa, Badawy Shahat, Ibrahim Rezk, Toru Oga, Satoshi Morita, Kazuo Chin, Kazuhisa Bessho
OBJECTIVES: The aim of this study was to examine the relationship between morphologic factors of mandibular protrusion patients and clinical indices of obstructive sleep apnea (OSA). METHODS: Fifty-two Japanese patients divided into 2 groups: 1 jaw surgery group (30 patients) and 2 jaw surgery group (22 patients). Morphologic changes were studied using cephalograms taken before surgery and 1 year after surgery. Functional changes studied using impulse oscillometry and pulse oximetry during sleep, both of which are clinically useful measures in assessing OSA, taken before surgery and 1 year after surgery...
February 23, 2018: Journal of Craniofacial Surgery
Jeong-Hyun Kang, Joohon Sung, Yun-Mi Song, Young-Ho Kim
BACKGROUND: Inherited traits of obstructive sleep apnea (OSA) may have link to the heritability of the airway anatomy. OBJECTIVES: The aim of present study was to investigate heritability of the airway anatomy by comparing skeletal and soft tissue features of Korean monozygotic (MZ) and dizygotic twins (DZ). METHODS: In total, 72 participants (mean age, 41.5 ± 5.9 years; 40 males, 32 females) including 48 MZ (24 pairs) and 24 DZ (12 pairs) with same sex were participated...
February 23, 2018: Journal of Oral Rehabilitation
Derrick M Knapik, Sarah J Royan, Michael J Salata, James E Voos
No abstract text is available yet for this article.
February 2018: Orthopaedic Journal of Sports Medicine
Roland Frey, David Reby, Guido Fritsch, Benjamin D Charlton
Koalas are characterised by a highly unusual vocal anatomy, with a descended larynx and velar vocal folds, allowing them to produce calls at disproportionately low frequencies. Here we use advanced imaging techniques, histological data, classical macroscopic dissection and behavioural observations to provide the first detailed description and interpretation of male and female koala vocal anatomy. We show that both males and females have an elongated pharynx and soft palate, resulting in a permanently descended larynx...
February 19, 2018: Journal of Anatomy
James Curtis, Jonelyn Langenstein, Sarah Schneider
The Dynamic Swallow Study (DSS) is a methodology used to objectively and quantitatively assess swallowing kinematics during Videofluoroscopic Swallow Studies (VFSS). No DSS normative data exist delineating superior and anterior hyoid displacement (Hsup and Hant , respectively), nor the ratio between Hsup and Hant (SAratio ). The aims of this study were to (1) establish normative data for Hsup , Hant , and SAratio and (2) assess the effects of age, sex, and bolus size on these measures in non-dysphagic patients, within the context of DSS...
February 14, 2018: Dysphagia
Andrew M Swiergosz, J Stephen Gunn, Steven A Schulz, Joshua T Henderson, Joshua H Choo, Arian Mowlavi, Bradon J Wilhelmi
Background : An estimated 125,711 face-lifts and 54,281 neck-lifts were performed in 2015. Regardless of the technique employed, facial and neck flap elevation carries with it anatomical risk of which any surgeon performing these procedures should be aware of. Statistics related to anterior jugular vein injury during these procedures have not been published. Objective : To define a "danger zone" that will contain both of the anterior jugular veins on the basis of anatomical landmarks to aid surgeons with planning their surgical approach during rhytidectomy in the anterior neck region...
2018: Eplasty
A R G Gauthier, D L Whitehead, I R Tibbetts, B W Cribb, M B Bennett
This study investigated and compared the morphology of the electrosensory system of three species of benthic rays. Neotrygon trigonoides, Hemitrygon fluviorum and Maculabatis toshi inhabit similar habitats within Moreton Bay, Queensland, Australia. Like all elasmobranchs, they possess the ability to detect weak electrical fields using their ampullae of Lorenzini. Macroscopically, the ampullary organs of all three species are aggregated in three bilaterally paired clusters: the mandibular, hyoid and superficial ophthalmic clusters...
February 2018: Journal of Fish Biology
Anne M B Corradi, Liciane P Valarelli, Thaís H Grechi, Alan L Eckeli, Davi C Aragon, Daniel S Küpper, Leila A Almeida, Heidi H Sander, Luciana V V Trawitzki, Fabiana C P Valera
PURPOSE: To evaluate the effect of pharyngeal surgery on swallowing pattern in patients with obstructive sleep apnea syndrome (OSAS), and to compare two surgical techniques: uvulopalatopharyngoplasty (UPPP) and expansion pharyngoplasty (EP), through videofluoroscopy. METHODS: Longitudinal prospective cohort, in a tertiary referral center. 17 adult patients were enrolled this study, divided into two groups: patients who underwent UPPP (n = 10) or EP (n = 7)...
February 8, 2018: European Archives of Oto-rhino-laryngology
Girriso F Benderro, Jenniffer Gamble, Matthew A Schiefer, Jonathan Z Baskin, Yeritza Hernandez, Kingman P Strohl
We tested the functional effects of hypoglossal (CNXII) stimulation in the anesthetized rabbit before and after injections of saline into the tongue base to obstruct the airway. Data (n = 6) show little or no effect of CN XII trunk stimulation; however, medial branch stimulation (20-100 Hz; 50-500 μs pulse width, and incremental increases from 10 μA) reduced upper airway resistance. Medial branch stimulation was less effective in reducing resistance than anterior advancement of the hyoid. Endoscopic viewing (n-3) of the retropalate showed this region as the narrowest and dynamically changed by anterior hyoid displacement, with less evident effects than CNXII stimulation...
February 1, 2018: Respiratory Physiology & Neurobiology
Mariko Matsubara, Haruka Tohara, Koji Hara, Hiromichi Shinozaki, Yasuhiro Yamazaki, Chiaki Susa, Ayako Nakane, Yoko Wakasugi, Shunsuke Minakuchi
Purpose: This study was aimed to examine the effectiveness of a high-speed jaw-opening exercise, which targets the contraction of fast-twitch muscle fibers, in improving swallowing function. Subjects and methods: Twenty-one subjects (mean age 74.0±5.7 years) with dysphagia-related symptoms, such as coughing or choking during eating, performed the exercise. None of the included subjects had neurological symptoms or history of surgery that could cause significant dysphagia...
2018: Clinical Interventions in Aging
Akira Ohkoshi, Takenori Ogawa, Shun Sagai, Ayako Nakanome, Kenjiro Higashi, Ryo Ishii, Kengo Kato, Yukio Katori
PURPOSE: In this article, a simple, new laryngeal suspension procedure is described. The effect of hyoid bone suspension by suturing the digastric muscle to the periosteum of the mandible is analyzed. MATERIALS AND METHODS: To elucidate the effect of hyoid bone suspension, CT scans of 26 patients who underwent ipsilateral neck dissection with primary resection of tongue cancer were retrospectively reviewed, and the distance between the hyoid bone and the mandible was measured on the operated and unoperated sides of the neck...
January 23, 2018: American Journal of Otolaryngology
Y Z Han, Y Tian, H Zhang, Y Q Zhao, M Xu, X Y Guo
BACKGROUND: We identified the most useful variables for prediction of difficult laryngoscopy in patients with cervical spondylosis according to physical indicators and preoperative skeletal X-ray and soft tissue MRI measurements. We hypothesized that there was a closer association between difficult laryngoscopy and radiologic indicators. METHODS: We randomly enroled 315 patients undergoing elective cervical spine surgery and analysed the radiological and physical data in predicting difficult laryngoscopy...
January 31, 2018: Acta Anaesthesiologica Scandinavica
Brian Ngure Kariuki, Fawzia Butt, Pamela Mandela, Paul Odula
Iatrogenic injuries to cranial nerves, half of which affect the hypoglossal nerve, occur in up to 20% of surgical procedures involving the neck. The risk of injury could be minimized by in-depth knowledge of its positional and relational anatomy. Forty-one hypoglossal nerves were dissected from cadaveric specimens and positions described in relation to the internal carotid artery (ICA), external carotid artery (ECA), carotid bifurcation, mandible, hyoid bone, mastoid process, and the digastric tendon. The distance of the nerve from where it crossed the ICA and ECA to the carotid bifurcation was 29...
March 2018: Craniomaxillofacial Trauma & Reconstruction
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