Study of Craniometric Point As a Landmark in Performing Posterolateral Surgeries on Skull
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Middle Cranial Fossa Sphenoidal Region Dural Arteriovenous Fistulas: Anatomic and Treatment Considerations
ORIGINAL RESEARCH INTERVENTIONAL Middle Cranial Fossa Sphenoidal Region Dural Arteriovenous Fistulas: Anatomic and Treatment Considerations Z.-S. Shi, J. Ziegler, L. Feng, N.R. Gonzalez, S. Tateshima, R. Jahan, N.A. Martin, F. Vin˜uela, and G.R. Duckwiler ABSTRACT BACKGROUND AND PURPOSE: DAVFs rarely involve the sphenoid wings and middle cranial fossa. We characterize the angiographic findings, treatment, and outcome of DAVFs within the sphenoid wings. MATERIALS AND METHODS: We reviewed the clinical and radiologic data of 11 patients with DAVFs within the sphenoid wing that were treated with an endovascular or with a combined endovascular and surgical approach. RESULTS: Nine patients presented with ocular symptoms and 1 patient had a temporal parenchymal hematoma. Angiograms showed that 5 DAVFs were located on the lesser wing of sphenoid bone, whereas the other 6 were on the greater wing of the sphenoid bone. Multiple branches of the ICA and ECA supplied the lesions in 7 patients. Four patients had cortical venous reflux and 7 patients had varices. Eight patients were treated with transarterial embolization using liquid embolic agents, while 3 patients were treated with transvenous embo- lization with coils or in combination with Onyx. Surgical disconnection of the cortical veins was performed in 2 patients with incompletely occluded DAVFs. Anatomic cure was achieved in all patients. Eight patients had angiographic and clinical follow-up and none had recurrence of their lesions. CONCLUSIONS: DAVFs may occur within the dura of the sphenoid wings and may often have a presentation similar to cavernous sinus DAVFs, but because of potential associations with the cerebral venous system, may pose a risk for intracranial hemorrhage. -
Craniotomy for Anterior Cranial Fossa Meningiomas: Historical Overview
Neurosurg Focus 36 (4):E14, 2014 ©AANS, 2014 Craniotomy for anterior cranial fossa meningiomas: historical overview SAUL F. MORALES-VALERO, M.D., JAMIE J. VAN GOMPEL, M.D., IOANNIS LOUMIOTIS, M.D., AND GIUSEPPE LANZINO, M.D. Department of Neurologic Surgery, Mayo Clinic, Mayo Medical School, Rochester, Minnesota The surgical treatment of meningiomas located at the base of the anterior cranial fossa is often challenging, and the evolution of the surgical strategy to resect these tumors parallels the development of craniotomy, and neurosur- gery in general, over the past century. Early successful operations to treat these tumors were pioneered by prominent figures such as Sir William Macewen and Francesco Durante. Following these early reports, Harvey Cushing made significant contributions, allowing a better understanding and treatment of meningiomas in general, but particularly those involving the anterior cranial base. Initially, large-sized unilateral or bilateral craniotomies were necessary to approach these deep-seated lesions. Technical advances such as the introduction of electrosurgery, the operating microscope, and refined microsurgical instruments allowed neurosurgeons to perform less invasive surgical proce- dures with better results. Today, a wide variety of surgical strategies, including endoscopic surgery and radiosurgery, are used to treat these tumors. In this review, the authors trace the evolution of craniotomy for anterior cranial fossa meningiomas. (http://thejns.org/doi/abs/10.3171/2014.1.FOCUS13569) KEY WORDS • intracranial meningiomas • craniotomy • history • anterior cranial fossa ENINGIOMAS of the anterior cranial fossa represent has a few distinct clinical features. However, in practice, 12%–20% of all intracranial meningiomas.5,30 this group of tumors often represents a continuum. -
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. -
The Neurocranium Forms the Cranial Cavity That Surrounds and Protects the Brain and Brainstem. the Neurocranium Is Formed from T
Name: Wokoma Olobo Benebo Department: Medical Laboratory Science Course: ANA 208 Matric Number: 18/MHS06/055 Assignment 1. Discuss the differences between viscerocranium and neurocranium The neurocranium forms the cranial cavity that surrounds and protects the brain and brainstem. The neurocranium is formed from the occipital bone, two temporal bones, two parietal bones, the sphenoid, ethmoid and frontal bones; they are all joined together with sutures. The viscerocranium bones form the anterior and lower regions of the skull and include the mandible, which attaches through the only truly motile joint found in the skull. The facial skeleton contains the vomer, two nasal conchae, two nasal bones, two maxilla, the mandible, two palatine bones, two zygomatic bones, and two lacrimal bones. 2. Femoral triangle is a special area of the thigh, Discuss Answers: The femoral triangle is a wedge-shaped area formed by a depression between the muscles of the thigh. It is located on the medial aspect of the proximal thigh. It is the region of the passage of the main blood vessels between the pelvis and the lower limb, as well as a large nerve supplying the thigh. It has several Borders and Contents. BORDERS: a. Lateral Border b. Medial Border c. Superior Border CONTENTS: a. Femoral Artery b. Femoral Vein c. Femoral Nerve d. Femoral Canal e. Lymphatics 3. Describe all the muscles of the lower limb that participates during 1/metre social distancing at the period of Covid 19. Answers: a. Rectus Femoris b. Vastus Medialis c. Vastus Lateralis d. Sartorius e. Gracilis f. The Hamstrings g.The Iliopsoas in the hips h. -
Spontaneous Encephaloceles of the Temporal Lobe
Neurosurg Focus 25 (6):E11, 2008 Spontaneous encephaloceles of the temporal lobe JOSHUA J. WIND , M.D., ANTHONY J. CAPUTY , M.D., AND FABIO ROBE R TI , M.D. Department of Neurological Surgery, George Washington University, Washington, DC Encephaloceles are pathological herniations of brain parenchyma through congenital or acquired osseus-dural defects of the skull base or cranial vault. Although encephaloceles are known as rare conditions, several surgical re- ports and clinical series focusing on spontaneous encephaloceles of the temporal lobe may be found in the otological, maxillofacial, radiological, and neurosurgical literature. A variety of symptoms such as occult or symptomatic CSF fistulas, recurrent meningitis, middle ear effusions or infections, conductive hearing loss, and medically intractable epilepsy have been described in patients harboring spontaneous encephaloceles of middle cranial fossa origin. Both open procedures and endoscopic techniques have been advocated for the treatment of such conditions. The authors discuss the pathogenesis, diagnostic assessment, and therapeutic management of spontaneous temporal lobe encepha- loceles. Although diagnosis and treatment may differ on a case-by-case basis, review of the available literature sug- gests that spontaneous encephaloceles of middle cranial fossa origin are a more common pathology than previously believed. In particular, spontaneous cases of posteroinferior encephaloceles involving the tegmen tympani and the middle ear have been very well described in the medical literature. -
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 -
Study on Asterion and Presence of Sutural Bones in South Indian Dry Skull
Mohammed Ahad et al /J. Pharm. Sci. & Res. Vol. 7(6), 2015, 390-392 Study on Asterion and Presence of Sutural Bones in South Indian Dry Skull Mohammed Ahad(1),Thenmozhi M.S.(2) 1)BDS 1st year, 2) HOD of Anatomy, Saveetha dental college and hospitals Abstract: Aim: To study morphological features of asterion and presence of sutural bones in posterior side of the 25 human skull. Objective: To know the detailed anatomical knowledge of sutural morphology of asterion and formation of sutural bone. Background: Asterion is the point on Norma lateralis where parietal, temporal and occipital bones meet. It has many neurosurgical importance so any variation during surgery cause damage to dural venous sinuses. Presence of sutural bones will complicate surgical orientation, so it is important to study about the formation of sutural bones and its pattern. Materials and methods: The study will be performed on 25 south Indian dry skull of unknown age and sex taken from the department of anatomy at Saveetha dental college and hospital ,Chennai. Reason: A Research on this topic will lead to the outcome of asterion position from various anatomical landmarks and incidence of sutural bone at posterior side of the skull. Keywords: asterion, sutural bones, surgical importance. INTRODUCTION: The asterion is the junction of the parietal, temporal and occipital bone. It is the surgical landmark to the transverse sinus location, which is of great importance in the surgical approaches to the posterior cranial fossa[1].The sutural morphology was classified into two types: Type 1 where a sutural bone was present and Type 2 where sutural bone was absent. -
Pterion Formation in North Indian Population: an Anatomico-Clinical Study
Int. J. Morphol., 32(4):1444-1448, 2014. Pterion Formation in North Indian Population: An Anatomico-Clinical Study Formación del Pterion en una Población del Norte de India: Un Estudio Anátomo-Clínico Seema* & Anupama Mahajan** SEEMA & MAHAJAN, A. Pterion formation in North Indian population: an anatomico-clinical study. Int. J. Morphol., 32(4):1444- 1448, 2014. SUMMARY: Pterion is a point of sutural confluence seen in the norma lateralis where frontal, parietal, temporal and sphenoid bones meet. This craniometric point is related to various structures in the cranial cavity like middle meningeal artery, anterior pole of insula and Broca's area. This study was done to find most common variation in its shape and presence of epipteric bones and to compare with other racial groups from previous study. Fifty adult human skulls of unknown sex taken from Department of Anatomy, Sri Guru Ram Das Institute of Medical Sciences and Rsearch, Vallah (Amritsar, India) were examined on both sides for the type and position of the pterion. Four types of pterion formation were noted. Sphenoparietal was observed in 89%, frontotemporal in 7%, stellate in 4% and epipteric in 12% of cases. The pterion was found to be 3.1±0.44 cm on the right side, 3.4±0.40 cm on the left side from the frontozygomatic suture and 4.1±0.45 cm on the right side and 4.4±0.32 cm on the left side from the centre of zygoma. These variations in the sutural morphology is comparable to other population. Its position is of interest to anthropologists, forensic pathologists and surgeons who deserve further investigation in population of different area. -
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. -
A 3D Stereotactic Atlas of the Adult Human Skull Base Wieslaw L
Nowinski and Thaung Brain Inf. (2018) 5:1 https://doi.org/10.1186/s40708-018-0082-1 Brain Informatics ORIGINAL RESEARCH Open Access A 3D stereotactic atlas of the adult human skull base Wieslaw L. Nowinski1,2* and Thant S. L. Thaung3 Abstract Background: The skull base region is anatomically complex and poses surgical challenges. Although many textbooks describe this region illustrated well with drawings, scans and photographs, a complete, 3D, electronic, interactive, real- istic, fully segmented and labeled, and stereotactic atlas of the skull base has not yet been built. Our goal is to create a 3D electronic atlas of the adult human skull base along with interactive tools for structure manipulation, exploration, and quantifcation. Methods: Multiple in vivo 3/7 T MRI and high-resolution CT scans of the same normal, male head specimen have been acquired. From the scans, by employing dedicated tools and modeling techniques, 3D digital virtual models of the skull, brain, cranial nerves, intra- and extracranial vasculature have earlier been constructed. Integrating these models and developing a browser with dedicated interaction, the skull base atlas has been built. Results: This is the frst, to our best knowledge, truly 3D atlas of the adult human skull base that has been created, which includes a fully parcellated and labeled brain, skull, cranial nerves, and intra- and extracranial vasculature. Conclusion: This atlas is a useful aid in understanding and teaching spatial relationships of the skull base anatomy, a helpful tool to generate teaching materials, and a component of any skull base surgical simulator. Keywords: Skull base, Electronic atlas, Digital models, Skull, Brain, Stereotactic atlas 1 Introduction carotid arteries, among others. -
INCIDENCE of TYPES of PTERION in SOUTH INDIANS – a STUDY on CADAVERIC DRY SKULLS Manjunath Halagatti 1, Channabasanagouda *2
International Journal of Anatomy and Research, Int J Anat Res 2017, Vol 5(3.2):4290-94. ISSN 2321-4287 Original Research Article DOI: https://dx.doi.org/10.16965/ijar.2017.313 INCIDENCE OF TYPES OF PTERION IN SOUTH INDIANS – A STUDY ON CADAVERIC DRY SKULLS Manjunath Halagatti 1, Channabasanagouda *2. 1 Assistant Professor, Department of Anatomy, Koppal Instistute of Medical Sciences, Koppal, Karnataka, India. *2 Associate Professor, Department of Anatomy, Koppal Instistute of Medical Sciences, Koppal, Karnataka, India. ABSTRACT Introduction : Pterion is an important landmark in the temporal fossa. It is a significant area for the surface location of anterior branch of middle meningeal artery and stem of lateral sulcus of the cerebrum. Based upon the pattern of articulation of the bones, different varieties of pterion have been encountered. Knowing about the incidence of types of pterion is very important for neurosurgeons, anthropologists, forensic scientists and radiologists. Materials and methods : Current study was done on 282 dry adult human cadaveric skulls (564 sides), for the incidence of different types of pterion. Types of pterion are – sphenoparietal type, frontotemporal type, stellate type and epipteric type. Results : Out of the 564 pteria,we have identified 455 sphenoparietal type, 77 frontotemporal type, 17 stellate type and 15 epipteric types. The incidence of different types of pteria have been correlated and compared with the data available from previous studies. Conclusion : The current study on incidence of types of pterion will add further knowledge to the available data about types of pterion and it will be of immense help for neurosurgeons, orthopedic surgeons, pediatricians, radiologists and anthropologists for proper diagnostic and therapeutic purposes. -
Lecture 7 Anatomy the PTERYGOPALATINE FOSSA
د.احمد فاضل القيسي Lecture 7 Anatomy THE PTERYGOPALATINE FOSSA The pterygopalatine fossa lies beneath the posterior surface of the maxilla and the pterygoid process of the sphenoid bone. The pterygopalatine fossa contains the maxillary nerve, the maxillary artery (third part) and the pterygopalatine parasympathetic ganglion. Boundaries Anteriorly: posterior surface of maxilla. Posteriorly: anterior margin of pterygoid process below and greater wing of sphenoid above. Medially: perpendicular plate of palatine bone. Superiorly: greater wing of sphenoid. Laterally: communicates with infratemporal fossa through pterygomaxillary fissure Communications and openings: 1. The pterygomaxillary fissure: transmits the maxillary artery from the infratemporal fossa, the posterior superior alveolar branches of the maxillary division of the trigeminal nerve and the sphenopalatine veins. 2. The inferior orbital fissure: transmits the infraorbital and zygomatic branches of the maxillary nerve, the orbital branches of the pterygopalatine ganglion and the infraorbital vessels. 3. The foramen rotundum from the middle cranial fossa, occupying the greater wing of the sphenoid bone and transmit the maxillary division of the trigeminal nerve 4. The pterygoid canal from the region of the foramen lacerum at the base of the skull. The pterygoid canal transmits the greater petrosal and deep petrosal nerves (which combine to form the nerve of the pterygoid canal) and an accompanying artery derived from the maxillary artery. 5. The sphenopalatine foramen lying high up on the medial wall of the fossa.This foramen communicates with the lateral wall of the nasal cavity. It transmits the nasopalatine and posterior superior nasal nerves (from the pterygopalatine ganglion) and the sphenopalatine vessels. 6. The opening of a palatine canal found at the base of the fossa.