TEMPORAL and INFRATEMPORAL FOSSAE (Grant's Dissector [16Th Ed.] Pp
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Anatomy of Maxillary and Mandibular Local Anesthesia
Anatomy of Mandibular and Maxillary Local Anesthesia Patricia L. Blanton, Ph.D., D.D.S. Professor Emeritus, Department of Anatomy, Baylor College of Dentistry – TAMUS and Private Practice in Periodontics Dallas, Texas Anatomy of Mandibular and Maxillary Local Anesthesia I. Introduction A. The anatomical basis of local anesthesia 1. Infiltration anesthesia 2. Block or trunk anesthesia II. Review of the Trigeminal Nerve (Cranial n. V) – the major sensory nerve of the head A. Ophthalmic Division 1. Course a. Superior orbital fissure – root of orbit – supraorbital foramen 2. Branches – sensory B. Maxillary Division 1. Course a. Foramen rotundum – pterygopalatine fossa – inferior orbital fissure – floor of orbit – infraorbital 2. Branches - sensory a. Zygomatic nerve b. Pterygopalatine nerves [nasal (nasopalatine), orbital, palatal (greater and lesser palatine), pharyngeal] c. Posterior superior alveolar nerves d. Infraorbital nerve (middle superior alveolar nerve, anterior superior nerve) C. Mandibular Division 1. Course a. Foramen ovale – infratemporal fossa – mandibular foramen, Canal -> mental foramen 2. Branches a. Sensory (1) Long buccal nerve (2) Lingual nerve (3) Inferior alveolar nerve -> mental nerve (4) Auriculotemporal nerve b. Motor (1) Pterygoid nerves (2) Temporal nerves (3) Masseteric nerves (4) Nerve to tensor tympani (5) Nerve to tensor veli palatine (6) Nerve to mylohyoid (7) Nerve to anterior belly of digastric c. Both motor and sensory (1) Mylohyoid nerve III. Usual Routes of innervation A. Maxilla 1. Teeth a. Molars – Posterior superior alveolar nerve b. Premolars – Middle superior alveolar nerve c. Incisors and cuspids – Anterior superior alveolar nerve 2. Gingiva a. Facial/buccal – Superior alveolar nerves b. Palatal – Anterior – Nasopalatine nerve; Posterior – Greater palatine nerves B. -
Morfofunctional Structure of the Skull
N.L. Svintsytska V.H. Hryn Morfofunctional structure of the skull Study guide Poltava 2016 Ministry of Public Health of Ukraine Public Institution «Central Methodological Office for Higher Medical Education of MPH of Ukraine» Higher State Educational Establishment of Ukraine «Ukranian Medical Stomatological Academy» N.L. Svintsytska, V.H. Hryn Morfofunctional structure of the skull Study guide Poltava 2016 2 LBC 28.706 UDC 611.714/716 S 24 «Recommended by the Ministry of Health of Ukraine as textbook for English- speaking students of higher educational institutions of the MPH of Ukraine» (minutes of the meeting of the Commission for the organization of training and methodical literature for the persons enrolled in higher medical (pharmaceutical) educational establishments of postgraduate education MPH of Ukraine, from 02.06.2016 №2). Letter of the MPH of Ukraine of 11.07.2016 № 08.01-30/17321 Composed by: N.L. Svintsytska, Associate Professor at the Department of Human Anatomy of Higher State Educational Establishment of Ukraine «Ukrainian Medical Stomatological Academy», PhD in Medicine, Associate Professor V.H. Hryn, Associate Professor at the Department of Human Anatomy of Higher State Educational Establishment of Ukraine «Ukrainian Medical Stomatological Academy», PhD in Medicine, Associate Professor This textbook is intended for undergraduate, postgraduate students and continuing education of health care professionals in a variety of clinical disciplines (medicine, pediatrics, dentistry) as it includes the basic concepts of human anatomy of the skull in adults and newborns. Rewiewed by: O.M. Slobodian, Head of the Department of Anatomy, Topographic Anatomy and Operative Surgery of Higher State Educational Establishment of Ukraine «Bukovinian State Medical University», Doctor of Medical Sciences, Professor M.V. -
Morphology of the Pterion in Serbian Population
Int. J. Morphol., 38(4):820-824, 2020. Morphology of the Pterion in Serbian Population Morfología del Pterion en Población Serbia Knezi Nikola1; Stojsic Dzunja Ljubica1; Adjic Ivan2; Maric Dusica1 & Pupovac Nikolina4 KNEZI, N.; STOJSIC, D. L.; ADJIC, I.; MARIC, D. & PUPOVAC, N. Morphology of the pterion in Serbian population. Int. J. Morphol., 38(4):820-824, 2020. SUMMARY: The pterion is a topographic point on the lateral aspect of the skull where frontal, sphenoid, parietal and temporal bones form the H or K shaped suture. This is an important surgical point for the lesions in anterior and middle cranial fossa. This study was performed on 50 dry skulls from Serbian adult individuals from Department of Anatomy, Faculty of Medicine in Novi Sad. The type of the pterion on both sides of each skull was determined and they are calcified in four types (sphenoparietal, frontotemporal, stellate and epipteric). The distance between the center of the pterion and defined anthropological landmarks were measured using the ImageJ software. Sphenoparietal type is predominant with 86 % in right side and 88 % in left side. In male skulls, the distance from the right pterion to the frontozygomatic suture is 39.89±3.85 mm and 39.67±4.61 mm from the left pterion to the frontozygomatic suture. In female skulls the distance is 37.38±6.38 mm on the right and 35.94±6.46 mm on the left. The shape and the localization of the pterion are important because it is an anatomical landmark and should be used in neurosurgery, traumatology and ophthalmology. -
The Mandibular Nerve - Vc Or VIII by Prof
The Mandibular Nerve - Vc or VIII by Prof. Dr. Imran Qureshi The Mandibular nerve is the third and largest division of the trigeminal nerve. It is a mixed nerve. Its sensory root emerges from the posterior region of the semilunar ganglion and is joined by the motor root of the trigeminal nerve. These two nerve bundles leave the cranial cavity through the foramen ovale and unite immediately to form the trunk of the mixed mandibular nerve that passes into the infratemporal fossa. Here, it runs anterior to the middle meningeal artery and is sandwiched between the superior head of the lateral pterygoid and tensor veli palatini muscles. After a short course during which a meningeal branch to the dura mater, and the nerve to part of the medial pterygoid muscle (and the tensor tympani and tensor veli palatini muscles) are given off, the mandibular trunk divides into a smaller anterior and a larger posterior division. The anterior division receives most of the fibres from the motor root and distributes them to the other muscles of mastication i.e. the lateral pterygoid, medial pterygoid, temporalis and masseter muscles. The nerve to masseter and two deep temporal nerves (anterior and posterior) pass laterally above the medial pterygoid. The nerve to the masseter continues outward through the mandibular notch, while the deep temporal nerves turn upward deep to temporalis for its supply. The sensory fibres that it receives are distributed as the buccal nerve. The 1 | P a g e buccal nerve passes between the medial and lateral pterygoids and passes downward and forward to emerge from under cover of the masseter with the buccal artery. -
CT of Perineural Tumor Extension: Pterygopalatine Fossa
731 CT of Perineural Tumor Extension: Pterygopalatine Fossa Hugh D. Curtin1.2 Tumors of the oral cavity and paranasal sinuses can spread along nerves to areas Richard Williams 1 apparently removed from the primary tumor. In tumors of the palate, sinuses, and face, Jonas Johnson3 this "perineural" spread usually involves the maxillary division of the trigeminal nerve. The pterygopalatine fossa is a pathway of the maxillary nerve and becomes a key landmark in the detection of neural metastasis by computed tomogaphy (CT). Oblitera tion of the fat in the fossa suggests pathology. Case material illustrating neural extension is presented and the CT findings are described. Perineural extension is possibly the most insidious form of tumor spread of head and neck malignancy. After invading a nerve, tumor follows the sheath to reach the deeper connections of the nerve, escaping the area of a planned resection. Thus, detection of this form of extension is important in treatment planning and estimation of prognosis. The pterygopalatine fossa (PPF) is a key crossroad in extension along cranial nerve V. The second branch of the trigeminal nerve passes from the gasserian ganglion through the foramen rotundum into the PPF. Here the nerve branches send communications to the palate, sinus, nasal cavity, and face. Tumor can follow any of these routes proximally into the PPF and eventually to the gasserian ganglion in the middle cranial fossa. The PPF contains enough fat to be an ideal subject for computed tomographic (CT) evaluation. Obliteration of this fat is an important indicator of pathology, including perineural tumor spread. Other signs of perineural extension include enlargement of foramina, increased enhancement in the region of Meckel cave (gasserian ganglion), and atrophy of the muscles innervated by the trigeminal nerve. -
MBB: Head & Neck Anatomy
MBB: Head & Neck Anatomy Skull Osteology • This is a comprehensive guide of all the skull features you must know by the practical exam. • Many of these structures will be presented multiple times during upcoming labs. • This PowerPoint Handout is the resource you will use during lab when you have access to skulls. Mind, Brain & Behavior 2021 Osteology of the Skull Slide Title Slide Number Slide Title Slide Number Ethmoid Slide 3 Paranasal Sinuses Slide 19 Vomer, Nasal Bone, and Inferior Turbinate (Concha) Slide4 Paranasal Sinus Imaging Slide 20 Lacrimal and Palatine Bones Slide 5 Paranasal Sinus Imaging (Sagittal Section) Slide 21 Zygomatic Bone Slide 6 Skull Sutures Slide 22 Frontal Bone Slide 7 Foramen RevieW Slide 23 Mandible Slide 8 Skull Subdivisions Slide 24 Maxilla Slide 9 Sphenoid Bone Slide 10 Skull Subdivisions: Viscerocranium Slide 25 Temporal Bone Slide 11 Skull Subdivisions: Neurocranium Slide 26 Temporal Bone (Continued) Slide 12 Cranial Base: Cranial Fossae Slide 27 Temporal Bone (Middle Ear Cavity and Facial Canal) Slide 13 Skull Development: Intramembranous vs Endochondral Slide 28 Occipital Bone Slide 14 Ossification Structures/Spaces Formed by More Than One Bone Slide 15 Intramembranous Ossification: Fontanelles Slide 29 Structures/Apertures Formed by More Than One Bone Slide 16 Intramembranous Ossification: Craniosynostosis Slide 30 Nasal Septum Slide 17 Endochondral Ossification Slide 31 Infratemporal Fossa & Pterygopalatine Fossa Slide 18 Achondroplasia and Skull Growth Slide 32 Ethmoid • Cribriform plate/foramina -
Atlas of the Facial Nerve and Related Structures
Rhoton Yoshioka Atlas of the Facial Nerve Unique Atlas Opens Window and Related Structures Into Facial Nerve Anatomy… Atlas of the Facial Nerve and Related Structures and Related Nerve Facial of the Atlas “His meticulous methods of anatomical dissection and microsurgical techniques helped transform the primitive specialty of neurosurgery into the magnificent surgical discipline that it is today.”— Nobutaka Yoshioka American Association of Neurological Surgeons. Albert L. Rhoton, Jr. Nobutaka Yoshioka, MD, PhD and Albert L. Rhoton, Jr., MD have created an anatomical atlas of astounding precision. An unparalleled teaching tool, this atlas opens a unique window into the anatomical intricacies of complex facial nerves and related structures. An internationally renowned author, educator, brain anatomist, and neurosurgeon, Dr. Rhoton is regarded by colleagues as one of the fathers of modern microscopic neurosurgery. Dr. Yoshioka, an esteemed craniofacial reconstructive surgeon in Japan, mastered this precise dissection technique while undertaking a fellowship at Dr. Rhoton’s microanatomy lab, writing in the preface that within such precision images lies potential for surgical innovation. Special Features • Exquisite color photographs, prepared from carefully dissected latex injected cadavers, reveal anatomy layer by layer with remarkable detail and clarity • An added highlight, 3-D versions of these extraordinary images, are available online in the Thieme MediaCenter • Major sections include intracranial region and skull, upper facial and midfacial region, and lower facial and posterolateral neck region Organized by region, each layered dissection elucidates specific nerves and structures with pinpoint accuracy, providing the clinician with in-depth anatomical insights. Precise clinical explanations accompany each photograph. In tandem, the images and text provide an excellent foundation for understanding the nerves and structures impacted by neurosurgical-related pathologies as well as other conditions and injuries. -
Foramina, Fossa and Vacuities in the Skull and Lower Jaw of Mud Turtle, Trionyx Gangeticus (Cuv.) by D
FORAMINA, FOSSA AND VACUITIES IN THE SKULL AND LOWER JAW OF MUD TURTLE, TRIONYX GANGETICUS (CUV.) BY D. K. MANSHARAMANI (Department of Zoology, ttolkar Science College, lndore) Received March 3, 1965 (Communicated by Dr. Benicharan Mahendra, F.A.SC.) As far as the author is aware, no work has been done on the skull of mud turtles specially the foramina, fossa and vacuities. I have therefore studied the cranial peculiarities of Trionyx gangeticus, with special reference to foramina, fossa and vacuities of the skull and lower jaw. Trionyx gangeticus, a monotypic, trionychid testudine, exhibits many foramina, fossa and vacuities in its skull, which is typically akinetic moni- mostylic and anapsidian. The latter condition undergoes partial modifi- cation in the shape of temporal region which reveals emargination. The temporal arch is formed by jugal and quadratojugal. The orbits are close to the anterior half separated by prefrontal on the dorsal side. The anterior nares are near the tip of the snout, bounded by prcunaxilla below and prefrontal above. The skull is oblong-swollen, nose convex-arched, forehead convex, upper jaw'with broad flat rugose alveolar plate, which is narrow in front and wide behind. It has three long posterior processes formed by supra- occipital in the middle and squamosals on either side. The premaxilla is extremely small, unpaired and does not reach the nasal cavity or the vomer. The maxillaries are correspondingly enlarged surrounding the choanae, which are separated by narrow vomer. The palatines form a broad deep concavity which is joined behind by long basi-sphenoid, which separates the long pterygoids from each other. -
Endoscopic Access to the Infratemporal Fossa and Skull Base a Cadaveric Study
ORIGINAL ARTICLE Endoscopic Access to the Infratemporal Fossa and Skull Base A Cadaveric Study Christopher J. Hartnick, MD; John S. Myseros, MD; Charles M. Myer III, MD Objectives: To demonstrate that the regions of the in- Endoscopic visualization and instrumentation was then fratemporal fossa and skull base at the level of the fora- performed. The infratemporal fossa was readily identi- men ovale can be visualized endoscopically and that struc- fied. The skull base at the level of the foramen ovale and tures can be manipulated within these regions using the branches of the third division of the trigeminal nerve endoscopic instruments. were seen distinctly. A probe was placed with ease within the foramen ovale itself. Methods: Cadaveric dissection of 3 human cadavers us- ing an endoscopic optical dissector. In all, 6 endoscopic Conclusions: Endoscopic access to the infratemporal infratemporal fossa and skull base approaches were per- fossa is readily accomplished, with excellent visualiza- formed. tion and instrumentation ability. This novel technique provides access to this remote region for evaluation, pos- Setting: Human temporal bone laboratory. sible biopsy, and potential treatment of infratemporal fossa lesions. Results: A Gillies incision was coupled with a lateral brow incision, and then subperiosteal planes were developed. Arch Otolaryngol Head Neck Surg. 2001;127:1325-1327 HE INFRATEMPORAL fossa is lymphoma, and juvenile nasopharyngeal a relatively remote region angiofibroma. Many of these tumors can beneath the skull base. Ac- undergo biopsy at some other, more readily cess to this region requires accessible area, or the diagnosis is se- thorough knowledge of the cured using imaging studies (computed Tanatomy of the region itself and of the sur- tomography or magnetic resonance rounding structures. -
Morphometric Study of Different Types of Pterion and It's Relation With
Anatomy Praba Antony Mary A and Venkatramaniah / JPBMS, 2012, 21 (04) Available online at www.jpbms.info ISSN NO- 2230 – 7885 CODEN JPBSCT ResearchJPBMS article NLM Title: J Pharm Biomed Sci. JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL SCIENCES Morphometric Study of different types of Pterion and It’s relation with middle meningeal artery in dry skulls of Tamil Nadu * A.Mary Antony Praba¹, C.Venkatramaniah². ¹Assistant Professor, Department of Anatomy, Tagore Medical College, Chennai, India. ²Assistant Professor, Department of Anatomy, Sri Lakshmi Narayana Institute of Medical Sciences, Pondy, India. Abstract: Pterion is a region in the anterior part of the floor of the temporal fossa where the greater wing of the sphenoid, the parietal, frontal and the squamous temporal bones meet and form a H shaped suture. Alternatively it is the meeting region of these 4 bones(1,2). It is an commonly used landmark to find the place of anterior division of middle meningeal artery inside. There are four different types of pterions they are the spenoparietal, frontotemporal, stellate and the epipteric varieties(3,2,4). Because the anatomical variation is been so much cared by the forensic anthropologists, neurosurgeons and the forensic pathologists, we find it necessary to study the occurrence of different types of pterion in the skulls of Tamil Nadu regions. So as to full fill the criteria the different types of pterion and it’s occurrence in relation with the middle meningeal artery is been studied. The most occurring type of pterion among tamil nadu skulls are found to be the spenoparietal variety and the frontotemporal the least. -
The Mandibular Nerve: the Anatomy of Nerve Injury and Entrapment
5 The Mandibular Nerve: The Anatomy of Nerve Injury and Entrapment M. Piagkou1, T. Demesticha2, G. Piagkos3, Chrysanthou Ioannis4, P. Skandalakis5 and E.O. Johnson6 1,3,4,5,6Department of Anatomy, 2Department of Anesthesiology, Metropolitan Hospital Medical School, University of Athens Greece 1. Introduction The trigeminal nerve (TN) is a mixed cranial nerve that consists primarily of sensory neurons. It exists the brain on the lateral surface of the pons, entering the trigeminal ganglion (TGG) after a few millimeters, followed by an extensive series of divisions. Of the three major branches that emerge from the TGG, the mandibular nerve (MN) comprises the 3rd and largest of the three divisions. The MN also has an additional motor component, which may run in a separate facial compartment. Thus, unlike the other two TN divisions, which convey afferent fibers, the MN also contains motor or efferent fibers to innervate the muscles that are attached to mandible (muscles of mastication, the mylohyoid, the anterior belly of the digastric muscle, the tensor veli palatini, and tensor tympani muscle). Most of these fibers travel directly to their target tissues. Sensory axons innervate skin on the lateral side of the head, tongue, and mucosal wall of the oral cavity. Some sensory axons enter the mandible to innervate the teeth and emerge from the mental foramen to innervate the skin of the lower jaw. An entrapment neuropathy is a nerve lesion caused by pressure or mechanical irritation from some anatomic structures next to the nerve. This occurs frequently where the nerve passes through a fibro-osseous canal, or because of impingement by an anatomic structure (bone, muscle or a fibrous band), or because of the combined influences on the nerve entrapment between soft and hard tissues. -
Clinical Anatomy of the Cranial Nerves Clinical Anatomy of the Cranial Nerves
Clinical Anatomy of the Cranial Nerves Clinical Anatomy of the Cranial Nerves Paul Rea AMSTERDAM • BOSTON • HEIDELBERG • LONDON NEW YORK • OXFORD • PARIS • SAN DIEGO SAN FRANCISCO • SINGAPORE • SYDNEY • TOKYO Academic Press is an imprint of Elsevier Academic Press is an imprint of Elsevier 32 Jamestown Road, London NW1 7BY, UK The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, UK Radarweg 29, PO Box 211, 1000 AE Amsterdam, The Netherlands 225 Wyman Street, Waltham, MA 02451, USA 525 B Street, Suite 1800, San Diego, CA 92101-4495, USA First published 2014 Copyright r 2014 Elsevier Inc. All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or any information storage and retrieval system, without permission in writing from the publisher. Details on how to seek permission, further information about the Publisher’s permissions policies and our arrangement with organizations such as the Copyright Clearance Center and the Copyright Licensing Agency, can be found at our website: www.elsevier.com/permissions. This book and the individual contributions contained in it are protected under copyright by the Publisher (other than as may be noted herein). Notices Knowledge and best practice in this field are constantly changing. As new research and experience broaden our understanding, changes in research methods, professional practices, or medical treatment may become necessary. Practitioners and researchers must always rely on their own experience and knowledge in evaluating and using any information, methods, compounds, or experiments described herein. In using such information or methods they should be mindful of their own safety and the safety of others, including parties for whom they have a professional responsibility.