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Neurosurgical anatomy

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https://www.readbyqxmd.com/read/28191601/the-maxillary-artery-and-its-variants-an-anatomical-study-with-neurosurgical-applications
#1
Jorge E Alvernia, Joaquin Hidalgo, Marc P Sindou, Chad Washington, Gustavo Luzardo, Eddie Perkins, Remi Nader, Patrick Mertens
BACKGROUND: The maxillary artery (MA) has gained attention in neurosurgery particularly in cerebral revascularization techniques, intracranial endonasal approaches and endovascular procedures. OBJECTIVES: To describe and illustrate the anatomy of the MA and its neurosurgical importance in a detailed manner. METHODS: Six cadaveric heads (12 MAs) were injected with latex. The arteries and surrounding structures were dissected and studied using microsurgical techniques...
February 13, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28179175/-to-operate-versus-not-to-operate-in-low-resource-settings-an-example-of-aneurysm-surgery-in-rural-iran-and-the-impact-of-mastery-of-neurosurgical-anatomy
#2
Dylan Griswold, Arnau Benet, Halima Tabani, Michael T Lawton, Ali Tayebi Meybodi
Subarachnoid hemorrhage (SAH) has a global incidence of 9/100,000. In low-resource settings, where neurosurgical capacity is diminished through fewer human and technological resources, neurosurgeons may not be prepared to operate on aneurysmal SAH. Through a case illustration of an Iranian neurosurgeon faced with a decision to operate on a patient presenting with aneurysmal SAH in a low-resource setting, we highlight the importance of mastery of neurosurgical anatomy, which was critical in achieving a favorable patient outcome...
February 4, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28137542/developing-the-first-highly-specialized-neurosurgical-center-of-excellence-in-trujillo-peru-work-in-progress-first-four-months-results
#3
Joham Choque-Velasquez, Roberto Colasanti, Virginia Baffigo-Torre, Luisa Estela Sacieta-Carbajo, Jacqueline Olivari-Heredia, Yolanda Falcon-Lizaraso, Juan Huber Mallma-Torres, Humberto Elera-Florez, Juha Hernesniemi
BACKGROUND: Economic, cultural, and geographical reasons usually limit the access to specialized health centers in developing countries, especially in rural areas. Peruvian health system indicators still highlight significant unmet clinical need for neurosurgical patients. Our project is to develop the first highly specialized neurosurgical center in the EsSalud hospital of Trujillo, with the goal to improve the treatment of neurosurgical diseases in that region, thus optimizing their outcomes while decreasing expensive and risky patients transfer to the neurosurgical departments in the capital district...
January 27, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28065874/is-complex-sphenoidal-sinus-anatomy-a-contraindication-to-a-transsphenoidal-approach-for-resection-of-sellar-lesions-presentation-of-a-case-series-and-review-of-the-literature
#4
Marco Locatelli, Andrea Di Cristofori, Riccardo Draghi, Giulio Bertani, Claudio Guastella, Lorenzo Pignataro, Giovanna Mantovani, Paolo Rampini, Giorgio Carrabba
BACKGROUND: The transsphenoidal approach (TNS) is considered the gold standard for resection of pituitary adenomas and other sellar region lesions. This approach is guided by few fundamental anatomical landmarks that conduct the surgeon toward the sellar floor. Some anatomical structures may vary a lot (e.g. intrasphenoidal septa, intercarotid distance) and may be difficult to identify. Among those structures, the pneumatization and conformation of the sphenoidal sinus (SS) plays a key role for accessing the floor of the sella and other skull base structures...
January 5, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28006854/quantification-of-human-upper-extremity-nerves-and-fascicular-anatomy
#5
Natalie A Brill, Dustin J Tyler
INTRODUCTION: This paper provides detailed quantification of upper extremity nerve and fascicular anatomy. The purpose is to provide values and trends in neural features useful for clinical applications and neural interface device design. METHODS: Nerve cross sections were taken from 4 ulnar, 4 median, and 3 radial nerves from 5 arms of 3 human cadavers. Quantified nerve features included cross sectional area, minor diameter, and major diameter. Fascicular features analyzed included count, perimeter, area, and position...
December 22, 2016: Muscle & Nerve
https://www.readbyqxmd.com/read/27989972/frontal-lobe-decortication-frontal-lobectomy-with-ventricular-preservation-in-epilepsy-part-1-anatomical-landmarks-and-surgical-technique
#6
Hung Tzu Wen, Leila Maria Da Róz, Albert L Rhoton, Luiz Henrique Martins Castro, Manoel Jacobsen Teixeira
BACKGROUND: An extensive frontal resection is a frequently performed neurosurgical procedure, especially for treating brain tumor and refractory epilepsy. However, there is paucity of reports available regarding its surgical anatomy and technique. OBJECTIVES: To present the anatomical landmarks and surgical technique of the frontal lobe decortication (FLD) in epilepsy. The goals are to maximize the gray matter removal, spare primary and supplementary motor areas, and preserving frontal horn...
October 27, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27867120/transforaminal-resection-of-cervical-dumbbell-schwannomas-in-patients-with-additional-tumors
#7
Ji Zhang, Xiang-Heng Zhang, Zi-Feng Wang, You-Ping Li, Zheng-Quan Zhu, Ji-Cheng Sun, Zheng-He Chen, Shao-Yong Wu, Ke Sai, Jian Wang, Yong-Gao Mou, Zhong-Ping Chen
BACKGROUND: It is rare for 2 primary tumors to occur simultaneously in a patient. Management of cervical dumbbell schwannomas (CDSs) with concurrent tumors (CTs) requires a specific neurosurgical strategy. The primary objective of this study is to investigate surgical strategies for CDSs with CTs while preserving as much of the mechanically relevant bone structures as possible. METHODS: Twelve patients with concurrent CTs and CDSs were identified from 3 medical centers...
November 17, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27759681/beyond-the-cyst-the-many-contributions-of-isadore-tarlov-1905-1977-to-contemporary-neurosurgical-practice
#8
Anand Kaul, Sunil Manjila, Jonathan P Miller
: Isadore Max Tarlov (1905-1977) is primarily remembered for his 1938 description of the eponymous perineural "Tarlov cyst." However, during his long career as a neurosurgeon and researcher, he was responsible for many other observations and inventions that influenced the development of neurosurgery in the 20th century. While studying at Johns Hopkins Medical School he was acquainted with Walter Dandy, and he became the first resident to study under Wilder Penfield at the newly formed Montreal Neurological Institute...
November 2016: Neurosurgery
https://www.readbyqxmd.com/read/27716782/visualization-of-anatomic-variation-of-the-anterior-septal-vein-on-susceptibility-weighted-imaging
#9
Zhengzhen Chen, Huihuang Qiao, Yu Guo, Jiance Li, Huizhong Miao, Caiyun Wen, Xindong Wen, Xiaofen Zhang, Xindong Yang, Chengchun Chen
BACKGROUND AND PURPOSE: Understanding the anatomy of the anterior septal vein (ASV) is critical for minimally invasive procedures to the third ventricle and for assessing lesion size and venous drainage in the anterior cranial fossa. Accordingly, this study evaluated topographic anatomy and anatomic variation of the ASV using susceptibility-weighted imaging (SWI). METHODS: Sixty volunteers were examined using a 3.0T MR system. The diameter of the ASV and distance between bilateral septal points were measured...
2016: PloS One
https://www.readbyqxmd.com/read/27709299/a-practical-guide-for-the-identification-of-major-sulcogyral-structures-of-the-human-cortex
#10
Christophe Destrieux, Louis Marie Terrier, Frédéric Andersson, Scott A Love, Jean-Philippe Cottier, Henri Duvernoy, Stéphane Velut, Kevin Janot, Ilyess Zemmoura
The precise sulcogyral localization of cortical lesions is mandatory to improve communication between practitioners and to predict and prevent post-operative deficits. This process, which assumes a good knowledge of the cortex anatomy and a systematic analysis of images, is, nevertheless, sometimes neglected in the neurological and neurosurgical training. This didactic paper proposes a brief overview of the sulcogyral anatomy, using conventional MR-slices, and also reconstructions of the cortical surface after a more or less extended inflation process...
October 5, 2016: Brain Structure & Function
https://www.readbyqxmd.com/read/27647276/the-superior-petrosal-sinus-a-review-of-anatomy-embryology-pathology-and-neurosurgical-relevance
#11
REVIEW
Martin M Mortazavi, Marcus A Cox, Erfanul Saker, Sanjay Krishnamurthy, Ketan Verma, Christoph J Griessenauer, Marios Loukas, Rod J Oskouian, R Shane Tubbs
The superior petrosal sinus is located between the middle and posterior cranial fossae and is important during many neurosurgical approaches to the skull base. Using standard search engines, the anatomical and clinical importance of the superior petrosal sinus was investigated. The superior petrosal sinus is important in many neurosurgical approaches and pathological entities. Therefore, it is important for those who operate at the skull base or interpret imaging here to have a good working knowledge of its anatomy, development, and pathological involvement...
September 19, 2016: Neurosurgical Review
https://www.readbyqxmd.com/read/27521775/the-sulci-of-the-inferior-surface-of-the-temporal-lobe-an-anatomical-study
#12
Ulas Cikla, Guner Menekse, Arman Quraishi, Gabriel Neves, Abdullah Keles, Collin Liu, Shahriar M Salamat, Mustafa K Baskaya
Understanding the anatomy of temporal lobe sulci and their variations can allow for safer neurosurgical approaches. Although the inferior temporal sulci and their relations to each other has been described by several authors, the nomenclature used has not been universal. The aim of this study was to investigate the anatomic features of the three main sulci of the inferior temporal lobe and provide a simple description of complex patterns among these sulci. Sulcal variations and their relations were examined in seventy formalin-fixed, adult cadaveric cerebral hemispheres...
October 2016: Clinical Anatomy
https://www.readbyqxmd.com/read/27454271/stimulation-of-the-spinal-cord-and-dorsal-nerve-roots-for-chronic-groin-pelvic-and-abdominal-pain
#13
Adrian B Levine, Andrew G Parrent, Keith W MacDougall
BACKGROUND: Chronic neuropathic groin pain is a common problem. It can arise following surgery or trauma, or spontaneously as part of various pelvic pain syndromes. A number of different stimulation techniques have been reported in the literature to treat this area, but due to the complex anatomy of the region, it can be difficult to target effectively with paresthesias. OBJECTIVES: In this study we report our results treating patients with chronic neuropathic groin, pelvic, and abdominal pain, using spinal cord stimulation and dorsal nerve root stimulation...
July 2016: Pain Physician
https://www.readbyqxmd.com/read/27439458/microsurgical-resection-of-skull-base-meningioma-expanding-the-operative-corridor
#14
Amol Raheja, William T Couldwell
A better understanding of surgical anatomy, marked improvement in illumination devices, provision of improved hemostatic agents, greater availability of more precise surgical instruments, and better modalities for skull base reconstruction have led to an inevitable evolution of skull base neurosurgery. For the past few decades, many skull base neurosurgeons have worked relentlessly to improve the surgical approach and trajectory for the expansion of operative corridor. With the advent of newer techniques and their rapid adaptation, it is foundational, especially for young neurosurgeons, to understand the basics and nuances of modifications of traditional neurosurgical approaches...
July 20, 2016: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/27428907/bifid-facial-nerve-trunk-anatomic-and-surgical-considerations
#15
María Fe García Reija, Julia C Blasco Palacio
The segment of the facial nerve (FN) between its emergence from the skull through the stylomastoid foramen and its bifurcation at the parotid area is referred to as the FN trunk (FNT). Injury to the facial nerve trunk is among the most undesirable outcomes following different otologic, plastic, maxillofacial, and neurosurgical procedures. These procedures frequently involve manipulation and isolation of this segment, and meticulous dissection should be practiced to avoid iatrogenic damage to the nerve. Identification and exposure of the FN trunk, however, may be difficult because it is surrounded by dense connective tissue...
September 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27385770/spinal-infections-among-patients-with-long-term-central-venous-catheters-for-home-parenteral-nutrition-a-descriptive-case-series
#16
Rabia Topan, Tim Ambrose, Mia Small, Elewys Lightman, Jeremy Nightingale, Simon M Gabe
Spinal infections are a rare yet serious metastatic complication of bacteremia among patients with long-term central venous catheters (CVCs) for which clinicians must remain vigilant. We performed a retrospective review of all cases of spinal infection occurring in the context of a CVC for long-term parenteral nutrition (PN) managed in our department between January 2010 and October 2013, a cohort of 310 patients over this time period. Six patients were identified (mean age, 65 years; 5 male). One hundred percent of patients presented with spinal pain (5/6 cervical, 1/6 thoracic)...
July 6, 2016: Nutrition in Clinical Practice
https://www.readbyqxmd.com/read/27364425/introduction-to-lumbosacral-and-sacropelvic-fixation-strategies
#17
Patrick C Hsieh, Praveen V Mummaneni
We are pleased to present this Neurosurgical Focus video supplement on lumbosacral and sacropelvic fixation strategies. Despite advancement in surgical techniques and technologies in spine, achieving consistent solid fusion across the lumbosacral junction remains a major challenge. The anatomy of the lumbosacral junction allows for a higher range of motion compared to other areas of the thoracolumbar spine. The L5-S1 interspace is exposed to significant shear forces. As a result, complications such as pseudoarthrosis, screw pull-out, implant fracture, or sacral fractures can occur...
July 2016: Neurosurgical Focus
https://www.readbyqxmd.com/read/27298261/anatomy-of-the-ophthalmic-artery-embryological-consideration
#18
Naoki Toma
There are considerable variations in the anatomy of the human ophthalmic artery (OphA), such as anomalous origins of the OphA and anastomoses between the OphA and the adjacent arteries. These anatomical variations seem to attribute to complex embryology of the OphA. In human embryos and fetuses, primitive dorsal and ventral ophthalmic arteries (PDOphA and PVOphA) form the ocular branches, and the supraorbital division of the stapedial artery forms the orbital branches of the OphA, and then numerous anastomoses between the internal carotid artery (ICA) and the external carotid artery (ECA) systems emerge in connection with the OphA...
October 15, 2016: Neurologia Medico-chirurgica
https://www.readbyqxmd.com/read/27112231/mania-secondary-to-focal-brain-lesions-implications-for-understanding-the-functional-neuroanatomy-of-bipolar-disorder
#19
REVIEW
David Satzer, David J Bond
OBJECTIVES: Approximately 3.5 million Americans will experience a manic episode during their lifetimes. The most common causes are psychiatric illnesses such as bipolar I disorder and schizoaffective disorder, but mania can also occur secondary to neurological illnesses, brain injury, or neurosurgical procedures. METHODS: For this narrative review, we searched Medline for articles on the association of mania with stroke, brain tumors, traumatic brain injury, multiple sclerosis, neurodegenerative disorders, epilepsy, and neurosurgical interventions...
May 2016: Bipolar Disorders
https://www.readbyqxmd.com/read/27109629/navigation-guided-endoscopic-intraventricular-injectable-tumor-model-cadaveric-tumor-resection-model-for-neurosurgical-training
#20
Ahmed M Ashour, Samer K Elbabaa, Anthony J Caputy, Cristian Gragnaniello
BACKGROUND: Intraventricular tumors present difficult challenges to the neurosurgeon. Neurosurgeons have begun to explore the possibilities of using the endoscope in the radical resection of solid intraventricular lesions. There is a steep learning curve when dealing with such lesions with an endoscope. OBJECTIVE: The aim of this study was to create a laboratory training model for pathological intraventricular neuroendoscopic surgery guided by the navigation system...
April 21, 2016: World Neurosurgery
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