keyword
MENU ▼
Read by QxMD icon Read
search

cranial base surgery

keyword
https://www.readbyqxmd.com/read/29332500/microstructure-and-mechanical-properties-of-porous-titanium-structures-fabricated-by-electron-beam-melting-for-cranial-implants
#1
Khaja Moiduddin
The traditional methods of metallic bone implants are often dense and suffer from adverse reactions, biomechanical mismatch and lack of adequate space for new bone tissue to grow into the implant. The objective of this study is to evaluate the customized porous cranial implant with mechanical properties closer to that of bone and to improve the aesthetic outcome in cranial surgery with precision fitting for a better quality of life. Two custom cranial implants (bulk and porous) are digitally designed based on the Digital Imaging and Communications in Medicine files and fabricated using additive manufacturing...
January 1, 2018: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/29325333/-biomechanical-effects-on-adjacent-segments-of-different-growing-rod-fixation-in-early-onset-scoliosis
#2
Y Hai, A X Pan, Y G Li, L Zang, S Yuan
Objective: To analyse the biomechanical effects on adjacent segments of different growing-rod (GR) fixation in early onset scoliosis through a finite element analysis method. Methods: A severe early-onset scoliosis patient was selected and the pre-operation and post-GR-operation (Upper instrumented levels: T(4), T(5). Lower instrumented levels: L(3), L(4)) whole spine 3-dimentional CT scan data were collected to build the finite models. Based on the different models, biomechanical differences on adjacent segments were analysed...
December 26, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/29319638/anomalous-sphenoid-diploe-vein-case-report-highlighting-the-value-of-careful-ct-evaluation-prior-to-decompression-surgery
#3
Michael Rafaelof, Hamzah Mustak, Daniel B Rootman
Lateral bony decompression may offer several biomechanical advantages and has become a commonly used surgical approach. Preoperative imaging plays a key role in surgical planning by providing information about the locoregional anatomy. The marrow space of the greater wing of the sphenoid is a focal point of the decompression surgery based on the volume that it occupies. Several vessels pass through the sphenoid bone, but most are small caliber vessels. The authors describe a case of an uncommon anatomical variant of the cranial diploic venous system in which the anterior transverse diploic vessel traverses the marrow space of the sphenoid...
January 9, 2018: Ophthalmic Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/29315191/ultra-long-term-audiometric-outcomes-in-the-treatment-of-vestibular-schwannoma-with-the-middle-cranial-fossa-approach
#4
Joseph P Roche, Erika A Woodson, Marlan R Hansen, Bruce J Gantz
OBJECTIVE: Define the long-term audiometric outcomes of vestibular schwannomas treated using the middle cranial fossa (MCF) approach. STUDY DESIGN: Retrospective records review. SETTING: University-based tertiary referral center. PATIENTS: Patients undergoing treatment of small vestibular schwannomas using the MCF approach. INTERVENTION(S): MCF exposure and treatment of small vestibular schwannomas...
February 2018: Otology & Neurotology
https://www.readbyqxmd.com/read/29305118/endoscope-holders-in-cranial-neurosurgery-part-2-an-international-survey
#5
Dimitrios Paraskevopoulos, Shlomi Constantini, Jarnail Bal, Jonathan Roth
BACKGROUND: Following a prior systematic review of currently available endoscope holders (EH), we aspired to detect trends, task-specific preferences and pitfalls of EH in various cranial neuroendoscopic procedures. METHODS: A questionnaire was disseminated to members of the International Federation of Neuroendoscopy (IFNE). The questionnaire evaluated indications and pitfalls of EH in different applications, in particular, differentiating between intraventricular and skull base endoscopy, as well as sub-categories of these two main fields...
January 2, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29304919/cranial-tumor-surgical-outcomes-at-a-high-volume-academic-referral-center
#6
Desmond A Brown, Benjamin T Himes, Brittny T Major, Benjamin F Mundell, Ravi Kumar, Bruce Kall, Fredric B Meyer, Michael J Link, Bruce E Pollock, John D Atkinson, Jamie J Van Gompel, W Richard Marsh, Giuseppe Lanzino, Mohamad Bydon, Ian F Parney
OBJECTIVE: To determine adverse event rates for adult cranial neuro-oncologic surgeries performed at a high-volume quaternary academic center and assess the impact of resident participation on perioperative complication rates. PATIENTS AND METHODS: All adult patients undergoing neurosurgical intervention for an intracranial neoplastic lesion between January 1, 2009, and December 31, 2013, were included. Cases were categorized as biopsy, extra-axial/skull base, intra-axial, or transsphenoidal...
January 2018: Mayo Clinic Proceedings
https://www.readbyqxmd.com/read/29298208/electrophysiology-of-extraocular-cranial-nerves-oculomotor-trochlear-and-abducens-nerve
#7
Praveen Hariharan, Jeffery R Balzer, Katherine Anetakis, Donald J Crammond, Parthasarathy D Thirumala
The utility of extraocular cranial nerve electrophysiologic recordings lies primarily in the operating room during skull base surgeries. Surgical manipulation during skull base surgeries poses a risk of injury to multiple cranial nerves, including those innervating extraocular muscles. Because tumors distort normal anatomic relationships, it becomes particularly challenging to identify cranial nerve structures. Studies have reported the benefits of using intraoperative spontaneous electromyographic recordings and compound muscle action potentials evoked by electrical stimulation in preventing postoperative neurologic deficits...
January 2018: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://www.readbyqxmd.com/read/29280026/management-of-non-functioning-pituitary-adenomas-surgery
#8
REVIEW
David L Penn, William T Burke, Edward R Laws
Non-functional pituitary adenomas (NFPAs) are benign tumors of the pituitary gland that do not over-secrete hormonal products, therefore, they are generally detected through symptoms of mass effect, including headache, vision loss, or hypopituitarism. There are multiple pathological subtypes of NFPAs, such as null cell adenomas, silent gonadotrophs, silent somatotrophs, silent corticotrophs, and silent subtype 3, all of which can be classified based on immunohistochemical studies and electron microscopy. Despite these numerous pathological subtypes, surgical resection remains the first-line treatment for NFPAs...
December 26, 2017: Pituitary
https://www.readbyqxmd.com/read/29248774/presenting-symptoms-and-prognostic-factors-for-symptomatic-outcomes-following-resection-of-meningioma
#9
Ashley Wu, Michael A Garcia, Stephen T Magill, William Chen, Harish N Vasudevan, Arie Perry, Philip V Theodosopoulos, Michael W McDermott, Steve E Braunstein, David R Raleigh
BACKGROUND: Meningioma is the most common primary intracranial tumor and patients present with diverse neurologic symptoms related to meningioma location. OBJECTIVE: To systematically quantify the presenting symptoms of meningioma and identify prognostic factors for symptomatic outcome following resection. METHODS: Two-hundred eighty-three patients who underwent resection of 313 meningiomas at a single institution were retrospectively identified, including 161 WHO grade I (52...
December 14, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29246423/sequencing-of-bimaxillary-surgery-in-the-correction-of-vertical-maxillary-excess-retrospective-study
#10
F S Salmen, T F M de Oliveira, M A C Gabrielli, V A Pereira Filho, M F Real Gabrielli
The aim of this study was to evaluate the precision of bimaxillary surgery performed to correct vertical maxillary excess, when the procedure is sequenced with mandibular surgery first or maxillary surgery first. Thirty-two patients, divided into two groups, were included in this retrospective study. Group 1 comprised patients who received bimaxillary surgery following the classical sequence with repositioning of the maxilla first. Patients in group 2 received bimaxillary surgery, but the mandible was operated on first...
December 12, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29243982/endoscopic-transorbital-superior-eyelid-approach-anatomical-study-from-a-neurosurgical-perspective
#11
Alberto Di Somma, Norberto Andaluz, Luigi Maria Cavallo, Matteo de Notaris, Iacopo Dallan, Domenico Solari, Lee A Zimmer, Jeffrey T Keller, Mario Zuccarello, Alberto Prats-Galino, Paolo Cappabianca
OBJECTIVE Recent studies have proposed the superior eyelid endoscopic transorbital approach as a new minimally invasive route to access orbital lesions, mostly in otolaryngology and maxillofacial surgeries. The authors undertook this anatomical study in order to contribute a neurosurgical perspective, exploring the anterior and middle cranial fossa areas through this purely endoscopic transorbital trajectory. METHODS Anatomical dissections were performed in 10 human cadaveric heads (20 sides) using 0° and 30° endoscopes...
December 15, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29241643/a-3-dimensional-approach-for-analysis-in-orthognathic-surgery-using-free-software-for-voxel-based-alignment-and-semiautomatic-measurement
#12
Kasper Stokbro, Torben Thygesen
PURPOSE: In orthognathic surgery, the repeatability of 3-dimensional (3D) measurements is limited by the need for manual reidentification of reference points, which can incorporate errors greater than 1 mm for every 4 repeated measurements. This report describes a semiautomatic approach to decrease the manual reidentification error. This study evaluated the repeatability of surgical outcome measurements using the semiautomatic approach. Furthermore, a step-by-step guide is provided to enable researchers and clinicians to perform the 3D analysis by themselves...
November 22, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29237926/endoscopic-approach-to-remove-intra-extracranial-tumors-in-various-skull-base-regions-10-year-experience-of-a-single-center
#13
Qiu-Hang Zhang, Zhen-Lin Wang, Hong-Chuan Guo, Feng Kong, Bo Yan, Ming-Chu Li, Ge Chen, Jian-Tao Liang, Yu-Hai Bao, Feng Ling
BACKGROUND: Some problems have been found in the usually adopted combined approach for the removal of intra-extracranial tumors in skull base. Herein, we described a pure endoscopic transnasal or transoral approach (ETA) for the removal of intra-extracranial tumors in various skull base regions. METHODS: Retrospectively, clinical data, major surgical complications, pre- and postoperative images, and follow-up information of a series of 85 patients with intra-extracranial tumors in various skull base regions who were treated by surgery via ETA in our skull base center during the past 10 years were reviewed and analyzed...
December 20, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/29227037/prospective-transfrontal-sheep-model-of-skull-base-reconstruction-using-vascularized-mucosa
#14
Sarina K Mueller, George Scangas, Mansor M Amiji, Benjamin S Bleier
BACKGROUND: No high-fidelity animal model exists to examine prospective wound healing following vascularized reconstruction of the skull base. Such a model would require the ability to study the prospective behavior of vascularized mucosal repairs of large dural and arachnoid defects within the intranasal environment. The objective of this study was to therefore develop and validate a novel, in vivo, transfrontal sheep model of cranial base repair using vascularized sinonasal mucosa. METHODS: Twelve transfrontal craniotomy and 1...
December 11, 2017: International Forum of Allergy & Rhinology
https://www.readbyqxmd.com/read/29216820/comparison-of-the-effect-of-different-infusion-rates-of-sufentanil-on-surgical-stress-index-during-cranial-pinning-in-children-under-general-anaesthesia-a-randomized-controlled-study
#15
In-Kyung Song, Sang-Hwan Ji, Eun-Hee Kim, Ji-Hyun Lee, Jin-Tae Kim, Hee-Soo Kim
BACKGROUND: Surgical stress index (SSI) is an established indicator for intraoperative nociception. Opioids are used to block stimulus of cranial pinning in neurosurgery. We investigated the effect of different infusion rates of sufentanil on SSI during cranial pinning in children under general anaesthesia. METHODS: Forty-nine children (2-12 years of age) underwent neurosurgery with pinning. The children were randomized into three groups based on the rate of sufentanil infusion: 0...
December 8, 2017: BMC Anesthesiology
https://www.readbyqxmd.com/read/29204309/laser-application-in-neurosurgery
#16
REVIEW
Evgenii Belykh, Kaan Yagmurlu, Nikolay L Martirosyan, Ting Lei, Mohammadhassan Izadyyazdanabadi, Kashif M Malik, Vadim A Byvaltsev, Peter Nakaji, Mark C Preul
Background: Technological innovations based on light amplification created by stimulated emission of radiation (LASER) have been used extensively in the field of neurosurgery. Methods: We reviewed the medical literature to identify current laser-based technological applications for surgical, diagnostic, and therapeutic uses in neurosurgery. Results: Surgical applications of laser technology reported in the literature include percutaneous laser ablation of brain tissue, the use of surgical lasers in open and endoscopic cranial surgeries, laser-assisted microanastomosis, and photodynamic therapy for brain tumors...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/29198950/comparison-among-ultrasonic-electrical-apparatus-and-toxic-chemicals-for-vestibular-lesion-in-mice
#17
Yusuke Yamaoka, Chikara Abe, Hironobu Morita
BACKGROUND: The vestibular lesion (VL) is required to examine the physiological function of the vestibular system in animals. Toxic chemicals or electrical apparatus have been used for the VL, however, they are not ideal as they have low specificity, and can result in unintended damage, and systemic toxic effect. NEW METHOD: Localized vibration-induced VL, using an ultrasonicator, is expected to overcome the problems associated with chemical and electrical lesions...
November 30, 2017: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/29198889/virtual-reality-based-simulators-for-cranial-tumor-surgery-a-systematic-review
#18
REVIEW
Travis Mazur, Tarek R Mansour, Luke Mugge, Azedine Medkour
BACKGROUND: Virtual reality (VR) simulators have become useful tools in various fields of medicine. Prominent uses of VR technologies include assessment of physician skills and for pre-surgical planning. VR has demonstrated effectiveness in multiple surgical specialties, yet its use in the field of neurosurgery remains limited to date. OBJECTIVES: To examine all current literature on VR based simulation for pre-surgical planning and training in cranial tumor surgeries and to assess the quality of these studies...
November 30, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29194832/the-pathogenesis-of-paraesophageal-empyema-in-dogs-and-constancy-of-radiographic-and-computed-tomography-signs-are-linked-to-involvement-of-the-mediastinal-serous-cavity
#19
Karine Gendron, Sean P McDonough, James A Flanders, May Tse, Peter V Scrivani
The mediastinal serous cavity is a normal anatomic space in the caudal mediastinum. Aims of this anatomic and case series study were to describe the signs of pathologic expansion of the mediastinal serous cavity observed during computed tomography (CT), review the underlying anatomy, perform a literature review, and evaluate the medical records of several dogs with mediastinal serous cavity empyema (paraesophageal empyema). The mesothelial lined mediastinal serous cavity is a cranial extension of the omental bursa, separated from the peritoneal cavity by the diaphragm, in the dorsal part of the caudal mediastinum, to the right of the esophagus, between the heart base and diaphragm...
November 30, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/29194275/preoperative-exposure-of-sigmoid-sinus-trajectory-in-posterolateral-cranial-base-approaches-using-a-new-landmark-through-a-neurosurgical-perspective
#20
Ihsan Doğan, Onur Özgüral, Ümit Eroğlu, Eyyub S M Al-Beyati, Cemil M Kilinç, Ayhan Cömert, Hasan Çağlar Uğur
The location of burr holes in posterolateral cranial base approaches should be appropriate to provide an adequate operative field, and surgical freedom is crucial for bone window opening. The aim of this study was to search for more convenient and easily detectable landmarks in comparison with current landmarks in posterolateral cranial base surgery. Twenty 3-dimensional reconstructed head and neck computed tomography angiography images (group 1) and 20 cadaver heads (group 2) were evaluated. An imaginary line connecting the angle of the mandible and the mastoid tip was extended upward...
November 20, 2017: Journal of Craniofacial Surgery
keyword
keyword
73856
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"