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A Study of Occurrence and Types of Suprameatal Spines in the Suprameatal Triangle
ISSN: 2455-2631 © March 2021 IJSDR | Volume 6, Issue 3 A STUDY OF OCCURRENCE AND TYPES OF SUPRAMEATAL SPINES IN THE SUPRAMEATAL TRIANGLE Preetha Parthasarathy Under graduate SIMATS Saveetha Dental College, 162, Poonamalle high road, Velappanchavadi, Chennai- 600095. India. Mrs. M.S. Thenmozhi Dept of Anatomy SIMATS Saveetha Dental College, 162, Poonamalle high road, Velappanchavadi, Chennai- 600095. India. Corresponding author: Mrs. Thenmozhi. M.S Dept of anatomy SIMATS Saveetha dental college, Velappanchavadi Chennai-600095 India Running title: Types of suprameatal spines ABSTRACT: AIM: To identify the occurrence and types of suprameatal spines on either sides of the skull in the suprameatal triangle and to study their clinic implications. OBJECTIVE: To figure out the presence of suprameatal spines in the suprameatal triangle and to review the literature on anatomical and clinic aspects of suprameatal triangle. INTRODUCTION: Suprameatal triangle is present between the posterior wall of external acoustic meatus and posterior root of zygomatic process, in the temporal bone. It is also called as Macewen’s triangle. Suprameatal spine is seen below the upper limit of the orifice of the inner end of external acoustic meatus which is closed by tympanic membrane. It is also called as spine of Henle. RESULT: From the above conducted study, it can be seen that, when the suprameatal spines were evaluated according to its type and occurrence, the crest type of spine present was more than the triangle type. The crest type of spine was found to be 62.2% and the triangle type of spine was about 37.8% CONCLUSION: Thus, this study shows the prevalence of crest and triangle type spine in the dry skulls evaluated. -
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. -
A 'Clear View of the N,Eglected Mastoid Aditus
1380 S.A. MEDICAL JOURNAL 11 December 1971 A 'Clear View of the N,eglected Mastoid Aditus G. C. C. BURGER, M.MED. (RAD.D.), Department of Diagnostic Radiology, H. F. Verwoerd Hospital, Pretoria SUMMARY By placing the head with the aditus vertical to the casette an X-ray tomographic cross-section of the aditus The aditus is the central link between the attic and the can be produced, which also allows the integrity of the mastoid antrum. Its patency determines the course of middle fossa floor to be judged with more accuracy than middle ear infections. has been possible in the past. S. Afr. Med. J., 45, 1380 (971). It is possible to make a transverse tomographic 'cut' through the aditus of the ear and at the same time to Fig. 1. Tomographic cross-section of the skull, labelled Fig. 3. Tomographic cross-section of the tympanic cavity with a wire coil insert in a dry skull. with incus in position in a dry skull. Fig. 2. Tomographic cross-section of the aditus in a dry Fig. 4. Tomographic cross-section of aditus in a patient. skull. -Date received: 16 November 1970. 11 Desember 1971 S.-A. MEDIESE TYDSKRIF 1381 demonstrate the thin bony layer which separates it from middle cranial fossa without the advantage of ever seeing the middle cranial fossa (Figs. 1 - 4). its floor in true tangent. One would hesitate to add yet another one to the lono list of radiographic views of the mastoid, but the aditus i;' after all, the passage which controls the course and out ANATOMY come of every inflammatory assault on the middle ear and mastoid. -
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. -
Topographical Anatomy and Morphometry of the Temporal Bone of the Macaque
Folia Morphol. Vol. 68, No. 1, pp. 13–22 Copyright © 2009 Via Medica O R I G I N A L A R T I C L E ISSN 0015–5659 www.fm.viamedica.pl Topographical anatomy and morphometry of the temporal bone of the macaque J. Wysocki 1Clinic of Otolaryngology and Rehabilitation, II Medical Faculty, Warsaw Medical University, Poland, Kajetany, Nadarzyn, Poland 2Laboratory of Clinical Anatomy of the Head and Neck, Institute of Physiology and Pathology of Hearing, Poland, Kajetany, Nadarzyn, Poland [Received 7 July 2008; Accepted 10 October 2008] Based on the dissections of 24 bones of 12 macaques (Macaca mulatta), a systematic anatomical description was made and measurements of the cho- sen size parameters of the temporal bone as well as the skull were taken. Although there is a small mastoid process, the general arrangement of the macaque’s temporal bone structures is very close to that which is observed in humans. The main differences are a different model of pneumatisation and the presence of subarcuate fossa, which possesses considerable dimensions. The main air space in the middle ear is the mesotympanum, but there are also additional air cells: the epitympanic recess containing the head of malleus and body of incus, the mastoid cavity, and several air spaces on the floor of the tympanic cavity. The vicinity of the carotid canal is also very well pneuma- tised and the walls of the canal are very thin. The semicircular canals are relatively small, very regular in shape, and characterized by almost the same dimensions. The bony walls of the labyrinth are relatively thin. -
Computed Tomography of Temporal Bone Pneumatization: 2
561 Computed Tomography of Temporal Bone Pneumatization: 2. Petrosquamosal Suture and Septum 1 Chat Virapongse ,2 The degree of visualization of the petrosquamosal (Korner's) septum on high-resolu Mohammad Sarwar1 tion axial computed tomography (CT) in 141 temporal bones (100 subjects) was ana Sultan Bhimani1 lyzed. The superior and inferior parts of the septum were assessed separately and were Clarence Sasaki3 seen in 75% and 41% of cases, respectively. There was no relation between the size of Robert Shapiro4 Korner's septum and pneumatization. The clinical relevance of this finding is discussed. The CT features of the ventral petrosquamosal suture also were investigated. The crista tegmentalis, a contribution of the petrosal tegmen to the mandibular fossa, was seen on CT as a polypoid excrescence projecting from the ventrolateral petrous pyramid. This knowledge is useful in the radiographic analysis of the course of longitudinal fractures of the petrous bone. The petrosquamosal septum and suture, formed at the junction of the mastoid and the temporal squama, is a well known landmark to otologists. This thin , osseous septum can be recognized on coronal conventional tomography as an oblique lamina projecting into the mastoid antrum (fig. 1A). In the appropriate clinical setting (e.g., an acquired cholesteatoma), its absence may imply destruction [1]. The septum is also seen on axial computed tomography (CT) as a thin osseous bar, subdividing the mastoid antrum into two parts. The recognition of this septum on CT is important because it is an integral part of temporal bone pneumatization. Previous authors have alluded to a relation between its size and temporal bone pneumatization [2-5]. -
1 Surgical Anatomy Alexander Rauchfuss
Chapter 1 1 1 Surgical Anatomy Alexander Rauchfuss The temporal bone presents a very complex anatomy. Therefore this overview is restricted to some major points from the viewpoint of surgical anatomy. For more detailed information see “Suggested Reading”. Thetemporalboneaccordingtoitsdevelopmentalanatomyisdivisibleinto four parts: the squamous, mastoid, petrous, and tympanic portions. Points of topographical reference on the lateral surface are the external acoustic meatus with its suprameatal spine, the temporal line, and the mastoid process. Thebaseofthezygomaextendsasacrestposteriorlyandslightlyupward, forming the supramastoid crest or temporal line. The temporal line as a land- mark corresponds to the base of the medial cranial fossa/tegmen tympani, which in most cases of surgery can easily be identified. In combination with the radiological anatomy in a Schüller view it allows adequate planning of the surgical approach to the antrum via the mastoid. All figures show the anatomy of a left ear. 2 1 Surgical Anatomy Figs. 1.1–1.5. Temporal bone and sigmoid sinus Fig. 1.1. Temporal bone. The degree of pneumatization is inconstant. The extent and arrangement of air cells varies considerably from a minimal air cell system in the surroundings of the antrum to involvement of most of the tempo- ral bone. Pneumatization usually begins in late fetal life, progressing until the end of childhood. The pneumatization process starts from the antrum. In most cases one can describe the topography of the cells as follows: periantral, sino- dural, perisinual, perifacial and mastoid tip cells. According to the extension of the cells, there is only one rule: the further from the antrum, the bigger the cells Fig. -
Modern Surgery, 4Th Edition, by John Chalmers Da Costa Rare Medical Books
Thomas Jefferson University Jefferson Digital Commons Modern Surgery, 4th edition, by John Chalmers Da Costa Rare Medical Books 1903 Modern Surgery - Chapter 23. Diseases and Injuries of the Head John Chalmers Da Costa Jefferson Medical College Follow this and additional works at: https://jdc.jefferson.edu/dacosta_modernsurgery Part of the History of Science, Technology, and Medicine Commons Let us know how access to this document benefits ouy Recommended Citation Da Costa, John Chalmers, "Modern Surgery - Chapter 23. Diseases and Injuries of the Head" (1903). Modern Surgery, 4th edition, by John Chalmers Da Costa. Paper 29. https://jdc.jefferson.edu/dacosta_modernsurgery/29 This Article is brought to you for free and open access by the Jefferson Digital Commons. The Jefferson Digital Commons is a service of Thomas Jefferson University's Center for Teaching and Learning (CTL). The Commons is a showcase for Jefferson books and journals, peer-reviewed scholarly publications, unique historical collections from the University archives, and teaching tools. The Jefferson Digital Commons allows researchers and interested readers anywhere in the world to learn about and keep up to date with Jefferson scholarship. This article has been accepted for inclusion in Modern Surgery, 4th edition, by John Chalmers Da Costa by an authorized administrator of the Jefferson Digital Commons. For more information, please contact: [email protected]. Diseases of the Head 595 XXIII. DISEASES AND INJURIES OF THE HEAD. I. DISEASES OF I:: HEAD. IN approaching a case of brain disorder, first endeavor to locate the seat of the trouble; next, ascertain the nature of the lesion; and, finally, deter- mine the best plan of treatment, operative or otherwise. -
Columna Vertebralis Thorax
WSKAZÓWKI DO ĆWICZEŃ DLA STUDENTÓW WYDZIAŁU LEKARSKIEGO Zakład Anatomii Prawidłowej i Klinicznej CB AM w Warszawie B.Ciszek Wymienione poniżej miana anatomiczne wskazują struktury anatomiczne, które należy umieć rozpoznać i omówić. Obowiązujące są miana łacińskie i angielskie. OSTEOLOGIA & ARTHROLOGIA V OS TEMPORALE TEMPORAL BONE Pars petrosa Petromastoid part Margo occipitalis Occipital border Processus mastoideus Mastoid process Incisura mastoidea Mastoid notch Sulcus sinius sigmoidei Sulcus for sigmoid sinus Sulcus arteriae occipitalis Occipital groove Foramen mastoideum Mastoid foramen Canalis facialis Facial nerve canal Geniculum canalis facialis Geniculum Canaliculus chordae tympani Canaliculus for the chorda tympani Apex partis petrosae Apex Canalis caroticus Carotid canal Canaliculi caroticotympanici Caroticotympanic canaliculus Canalis musculotubarius Semicanalis m.tensoris tympani Canal for the tensor tympani Semicanalis tubae auditivae Osseous part of the pharyngotympanic Septum canalis musculotubarii Septum /tube Facies ant.partis petrosae Anterior surface Tegmen tympani Tegmen tympani Eminentia arcuata Arcuate eminence Hiatus canalis nervi Hiatus for the greater petrosi maioris petrosal nerve Sulcus n.ptr.maioris Groove for the greater ptr.n. Hiatus canalis nervi Hiatus for the minor petrosal nerve petrosi minoris Sulcus n.ptr.minoris Groove for the minor ptr.n. Impresio trigeminalis Trigeminal impression Margo sup.partis petrose Superior border Sulcus sinus petrosi sup. Sulcus for sup. petrosal sinus Facies post.partis petrosae -
Inferior View of Skull
human anatomy 2016 lecture sixth Dr meethak ali ahmed neurosurgeon Inferior View Of Skull the anterior part of this aspect of skull is seen to be formed by the hard palate.The palatal process of the maxilla and horizontal plate of the palatine bones can be identified . in the midline anteriorly is the incisive fossa & foramen . posterolaterlly are greater & lesser palatine foramena. Above the posterior edge of the hard palate are the choanae(posterior nasal apertures ) . these are separated from each other by the posterior margin of the vomer & bounded laterally by the medial pterygoid plate of sphenoid bone . the inferior end of the medial pterygoid plate is prolonged as a curved spike of bone , the pterygoid hamulus. the superior end widens to form the scaphoid fossa . posterolateral to the lateral pterygoid plate the greater wing of the sphenoid is pieced by the large foramen ovale & small foramen spinosum . posterolateral to the foramen spinosum is spine of the sphenoid . Above the medial border of the scaphoid fossa , the sphenoid bone is pierced by pterygoid canal . Behind the spine of the sphenoid , in the interval between the greater wing of the sphenoid and the petrous part of the temporal bone , there is agroove for the cartilaginous part of the auditory tube. The opening of the bony part of the tube can be identified. The mandibular fossa of the temporal bone & the articular tubercle form the upper articular surfaces for the temporomandibular joint . separating the mandibular fossa from the tympanic plate posteriorly is the squamotympanic fissure, through the medial end of which (petrotympanic fissure ) the chorda tympani exits from the tympanic cavity .The styloid process of the temporal bone projects downward & forward from its inferior aspect. -
Analysis of Operating Field Area in Transpyramidal Retrolabyrinthine Approach to Posterior Cranial Fossa
Folia Morphol. Vol. 61, No. 4, pp. 305–308 Copyright © 2002 Via Medica O R I G I N A L ARTICLE ISSN 0015–5659 www.fm.viamedica.pl Analysis of operating field area in transpyramidal retrolabyrinthine approach to posterior cranial fossa Stanisław Nitek1, Jarosław Wysocki1, Eliza Brożek2 1Department of Normal Anatomy, Medical University of Warsaw, Poland 2Department of Paediatric Otorhinolaryngology, Medical University of Warsaw, Poland [Received 23 September 2002; Revised 21 October 2002; Accepted 21 October 2002] Retrolabyrinthine surgical access to the posterior and middle cranial fossa has a long history of use during the procedures aiming at the removal of small neo- plasmatic changes located in the area of the internal auditory tube. A precise knowledge of the anatomical alterations of the temporal bone in the aspect of the retrolabyrinthine access to the posterior cranial fossa determines a success- ful otoneurosurgical endoscopy, which involves a relatively narrow area. Forty- four cadaver temporal bones of both sexes were measured to obtain the dimen- sions of the surgical area limited by the sigmoid sinus, superior petrosal sinus and posterior labyrinth. The techniques of computer picture analysis were ap- plied in the research. The mean value of the surface area of the figure limited by the sigmoid sinus, superior petrosal sinus and posterior semicircular canal was 175.9 mm² with no significant differences between sexes and sides. The maxi- mal measured value was 356 mm², and the minimal was 84.3 mm². The size of the surgical area is characterised by large deviation range but was always suffi- cient to insert the endoscopic device and standard otosurgical instruments. -
Norma Lateralis: Lateral View of the Skull • Bones; • 1.Temporal Bone • 2.Temporal Lines • 3Zygomatic Arch • 4.External Auditory Meatus • 5
Bones of Skull Views of the skull Each aspect of skull is called Norma : study from above is called Norma verticalis Below : Norma - basalis Behind : Norma - occipitalis Front : Norma - frontalis Side to side: Norma - lateralis Norma verticalis = Vault = arched roof = dome • Bones: • Frontal • Parietal • Small part of occipital • Vertex : the highest point of the sagittal suture • Paraietal foramen – 3.5 cm infront of lambda • Bregma: cranial point between coronal and sagittal suture • Lambda: cranial point at the junction of lambda and sagittal suture • Paraietal eminence: maximum convex part of parietal bone Vault Norma occipitalis: posterior aspect of the skull • Bones: • 1. Posterior part of parietal bone • 2.mastoid process of temporal bone • 3.squamous part of occipital bone • Sutures: • 1.lambdoid • Paraietomastoid • occipitomastoid • External occipital protuberance • Superior and highest nuchal line Posterior View &Sutures Norma Frontalis • Can be divided into upper and lower Upper part: Super ciliary arches: curved elevations above the supraorbital margins Glabella: median elevation between the two supraciliary arches Nasion: median point at the root of the nose oribital opening : supraorbital margin formed by frontal bone supraorbital notch or foramen transmit supraorbital vessels and nerves Infra orbital margin formed by maxilla medially and zygomatic bone laterally Medial margin: formed by frontal bone above and anterior lacrimal crest of the maxilla below Lateral margin; formed by frontal process of zygomatic bone and zygomatic process of frontal bone Anterior nasal aperture Nasal bones Norma frontalis Upper part / Orbit Upper part Norma frontalis lower part of the face: Maxilla have processess Frontal process of maxilla Zygomatic process Alveolar process Zygomatic bones Body ,processes ,arch Zygomaticofacial foramen Z-f nerve Mandible : mental f -mental n and v Lower part Norma lateralis: lateral view of the skull • Bones; • 1.temporal bone • 2.temporal lines • 3Zygomatic arch • 4.External auditory meatus • 5.