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Microsurgical Anatomy

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https://www.readbyqxmd.com/read/29788188/importance-of-fenestration-size-for-definitive-treatment-of-a-quadrigeminal-arachnoid-cyst-endoscopic-inspection-of-the-cyst-and-surrounding-anatomy-2-dimensional-operative-video
#1
François Lechanoine, Pietro Spennato, Claudio Ruggiero, Giuseppe Cinalli
Arachnoid cysts are fluid-filled sacs, located between the brain or spinal cord and the arachnoid membrane. Their prevalence in children is between 1% and 3%. Quadrigeminal arachnoid cysts represent 1% to 10% of them and are often associated with hydrocephalus, mostly by an obstructive mechanism, explained by compression of the tectum of the midbrain. When an indication for treatment is retained, 3 surgical options are available: microsurgical excision/fenestration, endoscopic fenestration, and shunt placement...
May 18, 2018: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29779186/mastoid-foramen-mastoid-emissary-vein-and-clinical-implications-in-neurosurgery
#2
Martin Hampl, David Kachlik, Katerina Kikalova, Roxane Riemer, Matej Halaj, Vlastimil Novak, Premysl Stejskal, Miroslav Vaverka, Lumir Hrabalek, David Krahulik, Ondrej Nanka
BACKGROUND: Mastoid emissary vein is especially important from the neurosurgical point of view, because it is located in variable number in the area of the occipitomastoid suture and it can become a source of significant bleeding in surgical approaches through the mastoid process, especially in retrosigmoid craniotomy, which is used for approaches to pathologies localized in the cerebellopontine angle. Ideal imaging method for diagnosis of these neglected structures when planning a surgical approach is high-resolution computed tomography...
May 20, 2018: Acta Neurochirurgica
https://www.readbyqxmd.com/read/29761077/anatomical-cadaver-study-of-endolaryngeal-vascularization-focus-on-the-glottis-supraglottis-and-subglottis-from-the-transoral-microsurgical-point-of-view
#3
Pietro Perotti, Marco Ferrari, Nausica Montalto, Davide Lancini, Alberto Paderno, Fabiola Incandela, Barbara Buffoli, Luigi Fabrizio Rodella, Cesare Piazza
Introduction: Carbon dioxide laser coagulation during transoral laser microsurgery (TLM) for laryngeal cancer allows control of bleeding from vessels smaller than 0.5 mm. Therefore, larger arteries and veins must be carefully managed by clipping and/or monopolar cautery. The aim of this paper is to detail endolaryngeal vascular anatomy and identify areas of possible bleeding during TLM. Methods: We performed an anatomical study on a series of 11 fresh-frozen human cadavers...
2018: Frontiers in Oncology
https://www.readbyqxmd.com/read/29731281/three-dimensional-angioarchitecture-and-microsurgical-treatment-of-arteriovenous-fistulas-at-the-craniocervical-junction
#4
So Fujimoto, Keisuke Takai, Hirofumi Nakatomi, Taichi Kin, Nobuhito Saito
Digital subtraction angiography (DSA) is the gold standard for diagnosing vascular malformations; however, difficulties are associated with visualizing the angioarchitecture of arteriovenous fistulas at the craniocervical junction (CCJ AVFs) using DSA because of their complex regional neurovascular anatomy. The present study evaluated the application of 3-dimensional computer graphics (3D CG) to the surgical planning of CCJ AVFs. Six patients with CCJ AVFs who underwent microsurgery and/or endovascular treatment were included...
May 3, 2018: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/29726781/microsurgical-anatomy-of-the-subthalamic-nucleus-correlating-fiber-dissection-results-with-3-t-magnetic-resonance-imaging-using-neuronavigation
#5
Abuzer Güngör, Şevki Serhat Baydın, Vanessa M Holanda, Erik H Middlebrooks, Cihan Isler, Bekir Tugcu, Kelly Foote, Necmettin Tanriover
OBJECTIVE Despite the extensive use of the subthalamic nucleus (STN) as a deep brain stimulation (DBS) target, unveiling the extensive functional connectivity of the nucleus, relating its structural connectivity to the stimulation-induced adverse effects, and thus optimizing the STN targeting still remain challenging. Mastering the 3D anatomy of the STN region should be the fundamental goal to achieve ideal surgical results, due to the deep-seated and obscure position of the nucleus, variable shape and relatively small size, oblique orientation, and extensive structural connectivity...
May 4, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29726640/-establishment-of-a-penile-transplantation-model-in-beagle-dogs
#6
Yong-Bin Zhao, Wei-Lie Hu, Li-Chao Zhang, Jun Liu, Chang-Zheng Zhang, Bang-Qi Wang, Yuan-Song Xiao, Hui Hu, Ming Ying
Objective: To investigate the feasibility of establishing a model of allograft penile transplantation in adult beagle dogs and explore the conditions for constructing a stable animal model of penis transplant. METHODS: Following the principles of similarity, repeatability, feasibility, applicability, and controllability in the construction of experimental animal models, we compared the major anatomic features of the penis of 20 adult beagle dogs with those of 10 adult men...
August 2017: Zhonghua Nan Ke Xue, National Journal of Andrology
https://www.readbyqxmd.com/read/29709330/does-volumetric-measurement-of-cervical-lymph-nodes-serve-as-an-imaging-biomarker-for-locoregional-recurrence-of-oral-squamous-cell-carcinoma
#7
Ali-Farid Safi, Martin Kauke, Hendrik Jung, Marco Timmer, Jan Borggrefe, Thorsten Persigehl, Hans-Joachim Nickenig, Max Zinser, David Maintz, Matthias Kreppel, Joachim Zöller
In consideration of the 3-R-rule (Refine-Replace-Reduce) as a guideline for promoting ethical use of animals for surgical training, we present a novel training model for microvessel anastomosis. At hand of a rat cadaveric study, we evaluated the surgical anatomy of the common carotid artery (CCA), external jugular vein (EJV) and femoral vessels (FV) which were then used as templates for the present investigation. Anatomical dissection of 30 rat cadavers was performed. Two residents without prior microsurgical experience were included in the study and performed 5 CCA, 5 femoral artery, 5 EJV and 5 femoral vein anastomoses...
April 10, 2018: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/29697660/-the-topographical-and-anatomical-characteristic-of-the-anterior-part-of-the-external-auditory-passage-and-the-tympanic-cavity
#8
M I Anikin, A A Bagautdinov, I I Kagan
The objective of the present work was to overview the currently available literature data on microtopographic anatomy of the anterior portion of the middle ear and the external auditory passage. Manipulations on these structures during miringoplasty surgery appear to be the most difficult and laborious operations because this space is anatomically very narrow and curved; moreover, it contains the important intimate structures of the middle ear and is located very close to the temporomandibular joint. The knowledge of microsurgical anatomy of the anterior part of the middle ear and the external auditory passage is paramount in the context of the improvement of the professional skills of the surgeons...
2018: Vestnik Otorinolaringologii
https://www.readbyqxmd.com/read/29588892/orbitopterional-approach-with-extradural-clinoidectomy-for-the-resection-of-a-tuberculum-sellae-meningioma-adapting-the-strategy-to-the-microsurgical-and-pathological-anatomy
#9
Jaafar Basma, Vincent Nguyen, Jeffrey Sorenson, L Madison Michael
Objectives  To describe the orbitopterional approach with extradural clinoidectomy for the resection of a tuberculum sellae meningioma, with an emphasis on the microsurgical and pathological anatomy of such lesions. Design  After completing the orbitopterional craniotomy in one piece, the optic nerve is identified extradurally, unroofed, and the clinoid process resected. The falciform ligament is divided and the optic nerve is decompressed extradurally. Opening the frontotemporal dura exposes the tumor in the subfrontal region...
April 2018: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/29588881/orbitopterional-approach-for-the-resection-of-a-suprasellar-craniopharyngioma-adapting-the-strategy-to-the-microsurgical-and-pathologic-anatomy
#10
Vincent Nguyen, Jaafar Basma, Paul Klimo, Jeffrey Sorenson, L Madison Michael
Objectives  To describe the orbitopterional approach for the resection of a suprasellar craniopharyngioma with emphasis on the microsurgical and pathological anatomy of such lesions. Design  After completing the orbitopterional craniotomy in one piece including a supraorbital ridge osteotomy, the Sylvian fissure was split in a distal to proximal direction. The ipsilateral optic nerve and internal carotid artery were identified. Establishing a corridor to the tumor through both the opticocarotid and optic cisterns allowed for a wide angle of attack...
April 2018: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/29575166/anatomy-of-medial-plantar-superficial-branch-artery-perforators-facilitation-of-medial-plantar-superficial-branch-artery-perforator-mpap-flap-harvesting-and-design-for-finger-pulp-reconstruction
#11
Suphalerk Lohasammakul, Chairat Turbpaiboon, Kongkrit Chaiyasate, Parin Tatsanavivat, Supin Chompoopong, Ali Roham, Rosarin Ratanalekha, Chongdee Aojanepong
BACKGROUND: Medial plantar artery perforator (MPAP) flap was proposed as proper option for finger pulp reconstruction. To provide the previously unavailable vessel information required for this small flap design, this study aimed to gather all necessary anatomy of MPA, MPAP, and their territories of blood supply to apply in clinical MPAP flap reconstruction minimizing perforator injury. METHODS: Dissection of 30 Thai cadaveric feet for visualizing superficial branch of MPA and its perforators (MPAP) using acrylic dye cannulation were performed...
March 25, 2018: Microsurgery
https://www.readbyqxmd.com/read/29548967/radiologic-anatomy-of-the-lumbar-interlaminar-window-and-surgical-considerations-for-lumbar-interlaminar-endoscopic-and-microsurgical-disc-surgery
#12
Zakir Sakçı, Mehmet Reşid Önen, Elif Fidan, Yunus Yaşar, Hikmet Uluğ, Sait Naderi
OBJECTIVE: The interlaminar window is the most important corridor during both interlaminar approaches to intervertebral discs. The aim of this study was to measure radiologic parameters related to endoscopic and microsurgical interlaminar discectomy. METHODS: Measured parameters included lateral recess line (LRL) width, distance between LRL and endplates of upper intervertebral disc, superior and lateral angles of interlaminar window, interlaminar height, and interpedicular distance via optimized coronal oblique projection computed tomography images...
March 14, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29492113/review-of-surgical-anatomy-of-the-tumors-involving-cavernous-sinus
#13
REVIEW
Silky Chotai, Yi Liu, Songtao Qi
The lesions involving cavernous sinus (CS) and lateral sellar region includes tumors, vascular lesions, infection, inflammation, and trauma. Tumors associated with CS cause significant distortion of the microanatomy posing an additional surgical challenge to the neurosurgeons. The surgical approach and microsurgical anatomy with respect to the origin and growth of the tumor within the CS region have not been comprehensively described in recent years. We conducted a review of literature concerning CS and associated tumors, complied through MEDLINE/OVID and using cross-references of articles on PubMed with the keywords cavernous sinus, CS tumors, pituitary adenoma, meningioma, schwannoma, chordoma, CS hemangiomas, extradural, interdural, intradural, skull base, gamma knife radiosurgery, endoscopic endonasal approach...
January 2018: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/29480695/modern-classification-and-outcome-predictors-of-surgery-in-patients-with-brain-arteriovenous-malformations
#14
Ali Tayebi Meybodi, Michael T Lawton
Brain arteriovenous malformations (bAVM) are challenging lesions. Part of this challenge stems from the infinite diversity of these lesions regarding shape, location, anatomy, and physiology. This diversity has called on a variety of treatment modalities for these lesions, of which microsurgical resection prevails as the mainstay of treatment. As such, outcome prediction and managing strategy mainly rely on unraveling the nature of these complex tangles and ways each lesion responds to various therapeutic modalities...
February 23, 2018: Journal of Neurosurgical Sciences
https://www.readbyqxmd.com/read/29473780/letter-to-the-editor-microsurgical-anatomy-in-the-reappearance-of-avms-after-complete-resection
#15
Ke Tang, Yaqun Zhao, Xiaodong Yuan
No abstract text is available yet for this article.
May 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29430326/-adult-grisel-syndrome-and-cervical-skull-instability-transnasal-endoscopic-odontoidectomy-and-occipito-cervical-fusion-case-report-and-literature-review
#16
Roberto Herrera, Héctor Rojas, Ariel Estramian, Julieta Gómez, José Luis Ledesma, José Pablo, Julián Pastore
Background: Craniocervical junction pathology is infrequent in daily neurosurgical practice. In general, most of these lesions are of traumatic or rheumatic origin. Atlantoaxial instability of inflammatory origin (Grisel syndrome) is a rare entity of which only 16 adult cases have been reported in the literature. This pathology is characterized by the development of an osteolytic lesion at the level of the atlantoaxial joint after an infectious event, usually of the upper airways. Case Description: We present the case of a 76-year-old patient who attended our office for clinical symptoms of spinal instability secondary to an osteolytic lesion, with involvement of C1 and C2...
2018: Surgical Neurology International
https://www.readbyqxmd.com/read/29393756/the-microneurosurgical-anatomy-legacy-of-albert-l-rhoton-jr-md-an-analysis-of-transition-and-evolution-over-50-years
#17
Toshio Matsushima, Ken Matsushima, Shigeaki Kobayashi, J Richard Lister, Jacques J Morcos
Dr. Albert L. Rhoton Jr. was a pioneer of the study of microneurosurgical anatomy. Championing this field over the past half century, he produced more than 500 publications. In this paper, the authors review his body of work, focusing on approximately 160 original articles authored by Rhoton and his microneuroanatomy fellows. The articles are categorized chronologically into 5 stages: 1) dawn of microneurosurgical anatomy, 2) study of basic anatomy for general neurosurgery, 3) study for skull base surgery, 4) study of the internal structures of the brain by fiber dissection, and 5) surgical anatomy dealing with new advanced surgical approaches...
February 2, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29371167/making-anatomic-preparations-of-the-human-brain-using-colored-silicone-for-vascular-perfusion-staining-technical-description
#18
Mikhail A Shkarubo, Alexey N Shkarubo, Georgiy F Dobrovolsky, Georgiy A Polev, Ilia V Chernov, Dmitry N Andreev, Vasiliy V Karnaukhov, Konstantin V Koval
BACKGROUND: A thorough understanding of the central nervous system anatomy is a fundamental part of a neurosurgeon's training. Development of novel neurosurgical approaches and optimization of existing ones directly depend on the comprehensive study of topographic anatomy of the head and neck using cadaveric specimens. Staining the vessels of the arterial and venous systems of a cadaveric specimen aids a detailed study of the vascularization of anatomic structures of the brain. Here we describe an alternative expedited method for creating anatomic preparations of the human brain using colored silicone for vascular perfusion staining...
April 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29301049/treatment-of-an-anterior-inferior-cerebellar-artery-aneurysm-with-microsurgical-trapping-and-in-situ-posterior-inferior-cerebellar-artery-to-anterior-inferior-cerebellar-artery-bypass-case-report
#19
Bryan S Lee, Alex M Witek, Nina Z Moore, Mark D Bain
BACKGROUND: Anterior inferior cerebellar artery (AICA) aneurysms are rare lesions whose treatment can involve microsurgical and/or endovascular techniques. Such treatment can be challenging and may carry a significant risk of neurological morbidity. OBJECTIVE: To demonstrate a case involving a complex AICA aneurysm that was treated with a unique microsurgical approach involving trapping the aneurysm and performing in Situ bypass from the posterior inferior cerebellar artery (PICA) to the distal AICA...
December 30, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29258935/low-retrosigmoid-infratonsillar-approach-to-lateral-medullary-lesions
#20
Baran Bozkurt, M Yashar S Kalani, Kaan Yağmurlu, Evgenii Belykh, Mark C Preul, Peter Nakaji, Robert F Spetzler
OBJECTIVE: In our study, we comprehensively detail the technique of the low retrosigmoid approach to the lateral medullary area, including the inferior cerebellar peduncle, postolivary sulcus, pontomedullary sulcus, and inferior olivary nucleus, as well as the lateral recess of the fourth ventricle. METHODS: Four formalin-fixed, silicone-injected, cadaveric human heads were examined under the operating microscope to demonstrate pertinent descriptive anatomy using the low retrosigmoid approach in a stepwise manner...
March 2018: World Neurosurgery
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