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https://www.readbyqxmd.com/read/28637109/closing-the-dura-dural-hitching-versus-surgicel-and-tisseel-overlay-graft-in-craniocervicaldecompression-for-chiari-1-malformation
#1
Michael Tonkins, Naeem Farooqi, Rohan Ahmed, Saurabh Sinha, Debapriya Bhattacharyya
BACKGROUND: This study compares dural hitching to surgicel and tisseel overlay graft following craniocervical decompression and C1 laminectomy with simple durotomy for Chiari I malformation. Outcome measures were syrinx decompression, headache resolution and complication rates. METHODS: A retrospective analysis of case notes was conducted. Patients who had undergone craniocervical decompression (CCD) were grouped by method of dural closure. Outcomes compared were rates of syrinx decompression, headache resolution, and post-operative complications...
March 2, 2017: British Journal of Neurosurgery
https://www.readbyqxmd.com/read/28632140/thermal-stability-and-rheological-properties-of-the-non-stick-caf1-biomaterial
#2
Yakup Ulusu, Gema Dura, Helen Waller, Matthew Benning, David Fulton, Jeremy Lakey, Daniel Thomas Peters
The ability to culture cells in three dimensions has many applications, from drug discovery to wound healing. 3D cell culture methods often require appropriate scaffolds that mimic the cellular environments of different tissue types. The choice of material from which these scaffolds are made is of paramount importance, as its properties will define the manner in which cells interact with the scaffold. Caf1 is a protein polymer that is secreted from its host organism, Yersinia pestis, to enable escape from phagocytosis...
June 20, 2017: Biomedical Materials
https://www.readbyqxmd.com/read/28631961/intracranial-dural-chondroma-in-a-child-conventional-and-advanced-neuroimaging-characteristics-and-differential-diagnosis
#3
Shai Shrot, Alan R Cohen, Fausto J Rodriguez, Frank Berkowitz, Bruno P Soares, Thierry Agm Huisman
Intracranial chondromas are rare tumors, especially in the pediatric population. We describe the conventional and advanced neuroimaging characteristics of this rare convexity dura-based chondroma in a young adolescent. In particular we demonstrate that diffusion-weighted imaging (DWI) facilitates differentiation between a dura-based chondroma and the more frequent classical meningioma. Chondromas are typically DWI hypointense with high apparent diffusion coefficient (ADC) values while meningiomas are typically DWI hyperintense with low ADC values...
January 1, 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28629679/how-to-address-cerebrospinal-fluid-leakage-following-ossification-of-the-posterior-longitudinal-ligament-surgery
#4
Jung Hyeon Moon, Sungjoon Lee, Chun Kee Chung, Chi Heon Kim, Won Heo
BACKGROUND: Primary dural repair in ossification of posterior longitudinal ligament (OPLL) surgery via anterior is challenging because of limited space. Based on several years of our experiences, we present our concept for addressing cerebrospinal fluid (CSF) leakage following dural tear during anterior OPLL surgery. METHODS: We reviewed the medical records of 65 patients who underwent anterior OPLL surgery from 2003 to 2014. We included 7 patients whose operation records described dural tear followed by CSF leakage...
June 16, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28628727/bone-resection-for-facial-cutaneous-malignancies
#5
Markus Brunner, Sydney Ch'ng, Kerwin Shannon, Anthony Clifford, Bruce Ashford, Michael Elliott, Jonathan R Clark
BACKGROUND AND OBJECTIVES: The aim of this study is to analyze the clinical outcomes of patients who underwent bone resection for cutaneous malignancy of the face and scalp. METHODS: We retrospectively collected patient data from 62 patients who underwent bone resection for craniofacial cutaneous malignancy of the face and scalp over the last 10 years. We investigated risk factors for disease progression and assessed the utility of pre-operative imaging to predict bone, dura, and brain infiltration...
June 19, 2017: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28622178/labor-analgesia-onset-with-dural-puncture-epidural-versus-traditional-epidural-using-a-26-gauge-whitacre-needle-and-0-125-bupivacaine-bolus-a-randomized-clinical-trial
#6
Sylvia H Wilson, Bethany J Wolf, Kellie N Bingham, Quiana S Scotland, John M Fox, Erick M Woltz, Latha Hebbar
BACKGROUND: Lumbar epidurals (LEs) provide excellent analgesia. Combined spinal epidural and dural puncture epidural (DPE) are 2 techniques to expedite neuraxial analgesia onset. In DPE, dura is punctured but medication is not administered in the cerebrospinal fluid. Expedited analgesia onset has been demonstrated with DPE, using 0.25% bupivacaine; however, this concentration may impede an unassisted vaginal birth and is not currently used for induction and maintenance of labor analgesia...
June 14, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28621617/intrathoracic-meningocele-associated-with-neurofibromatosis-type-1-and-a-novel-technique-for-surgical-repair-case-report
#7
Paramita Das, Tarini Goyal, Matthew A Hunt
Neurofibromatosis Type 1 (NF1) is a neurocutaneous disorder that can have associated spinal abnormalities related to both bone and dural dysplasia. Thoracic meningoceles are one spine anomaly associated with NF1, although they are a fairly uncommon pathology. Surgical techniques to treat these meningoceles, usually undertaken only when the patient is symptomatic, are targeted at decreasing the size of the protrusion and improving lung capacity. Surgical interventions discussed in the literature include shunting the pseudomeningocele, primary repair with laminectomy, thoracoscopic plication, and reinforcement of the closure with cement, muscle, or fascia...
June 16, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28620735/meningocele-manqu%C3%A3-a-comprehensive-review-of-this-enigmatic-finding-in-occult-spinal-dysraphism
#8
REVIEW
Cameron Schmidt, Ellie Bryant, Joe Iwanaga, Rod J Oskouian, W Jerry Oakes, R Shane Tubbs
The term meningocele manqué (MM) was coined in 1972 to describe a broad range of surgical findings characterized by intradural bands tethering neural structures to the dorsal dura. Over the following decades, reports continued to lump intradural tethering bands associated with a variety of comorbidities under the umbrella term MM. In more recent years, disorders previously called MM have been identified as embryologically distinct and were reclassified. While this sectioning continues, there remains a set of intradural tethering disorders for which no better term than MM exists...
June 15, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28618377/ring-and-peg-electrodes-for-minimally-invasive-and-long-term-sub-scalp-eeg-recordings
#9
Y B Benovitski, A Lai, C C McGowan, O Burns, V Maxim, D A X Nayagam, R Millard, G D Rathbone, M A le Chevoir, R A Williams, D B Grayden, C N May, M Murphy, W J D'Souza, M J Cook, C E Williams
OBJECTIVE: Minimally-invasive approaches are needed for long-term reliable Electroencephalography (EEG) recordings to assist with epilepsy diagnosis, investigation and more naturalistic monitoring. This study compared three methods for long-term implantation of sub-scalp EEG electrodes. METHODS: Three types of electrodes (disk, ring, and peg) were fabricated from biocompatible materials and implanted under the scalp in five ambulatory ewes for 3months. Disk electrodes were inserted into sub-pericranial pockets...
June 12, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28617531/controlled-release-mitomycin-c-polylactic-acid-film-prevents-epidural-scar-hyperplasia-after-laminectomy-by-inducing-fibroblast-autophagy-and-regulating-the-expression-of-mirnas
#10
B-B Wang, H Xie, T Wu, N Xie, J Wu, Y Gu, F Tang, J Liu
OBJECTIVE: To design a new controlled-release MMC-PLA film and explore whether and how this film could prevent epidural scar hyperplasia and adhesion in a post-laminectomy rat model. MATERIALS AND METHODS: All procedures were performed under the approval and supervision of the Institutional Animal Care and Use Committee (IACUC) of Nanjing Medical University. A total of 120 Sprague-Dawley (SD) rats were randomly placed into four groups after laminectomy (each group=30 rats)...
May 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28616750/systematic-review-of-oral-manifestations-related-to-hyperparathyroidism
#11
REVIEW
Benjamin Palla, Egon Burian, Riham Fliefel, Sven Otto
OBJECTIVES: We sought to identify oral symptoms found in hyperparathyroidism and compare their rate of occurrence, as well as potential variations in sequelae between primary, secondary, and tertiary hyperparathyroidism. MATERIALS AND METHODS: Database searches were performed through EMBASE and PubMed, with a continual handsearch for relevant articles. PRISMA guidelines were followed. RESULTS: Two hundred five articles including 245 patients were analyzed with data extraction...
June 14, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28616673/contribution-of-sellar-dura-integrity-to-symptom-manifestation-in-pituitary-adenomas-with-intratumoral-hemorrhage
#12
Yasuhiko Hayashi, Yasuo Sasagawa, Daisuke Kita, Issei Fukui, Masahiro Oishi, Osamu Tachibana, Fumiaki Ueda, Mitsutoshi Nakada
PURPOSE: Although hemorrhage within pituitary adenomas frequently exacerbates the symptoms, there are many grades of severity. Moreover, the contributing factors for symptom severity are still controversial. METHODS: This retrospective study included 82 patients who underwent transsphenoidal surgery for pituitary adenomas with intratumoral hemorrhage. The grades of preoperative symptoms were classified into group A, asymptomatic or minor symptoms; group B, moderate symptoms sufficient for complain; and group C, severe symptoms disturbing daily life...
June 14, 2017: Pituitary
https://www.readbyqxmd.com/read/28615329/physiological-properties-of-brain-machine-interface-input-signals
#13
Marc W Slutzky, Robert D Flint
Brain machine interfaces (BMIs), also called brain computer interfaces (BCIs), decode neural signals and use them to control some type of external device. Despite many experimental successes and terrific demonstrations in animals and humans, a high-performance, clinically-viable device has not yet been developed for widespread usage. There are many factors that impact clinical viability and BMI performance. Arguably the first of these is the selection of brain signals used to control BMIs. Here, we summarize the physiological characteristics and performance-including movement-related information, longevity, and stability-of multiple types of input signals that have been used in invasive BMIs to date...
June 14, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28604497/potential-mechanism-for-some-post-operative-c5-palsies-an-anatomical-study
#14
Fernando Alonso, Vlad Voin, Joe Iwanaga, David Hanscom, Jens R Chapman, Rod J Oskouian, Marios Loukas, R Shane Tubbs
STUDY DESIGN: Anatomical Study. OBJECTIVE: Determine if shoulder depression (e.g., taping the shoulders) might result in C5 nerve traction and subsequent injury. SUMMARY OF BACKGROUND DATA: Postoperative C5 nerve palsy is a recognized entity that is still often enigmatic. Inferior shoulder depression is usually employed to assist with surgical visualization during cervical spine procedures. METHODS: In the supine position, ten adult fresh frozen human cadavers underwent dissection of the spinal cord and its adjacent dorsal, ventral roots and spinal nerves from C4 to T1...
June 9, 2017: Spine
https://www.readbyqxmd.com/read/28602925/supracerebellar-infratentorial-paramedian-approach-in-helsinki-neurosurgery-cornerstones-of-a-safe-and-effective-route-to-the-pineal-region
#15
Joham Choque-Velasquez, Roberto Colasanti, Julio C Resendiz-Nieves, Behnam Rezai Jahromi, Danil A Kozyrev, Peeraphong Thiarawat, Juha Hernesniemi
OBJECTIVE: The supracerebellar infratentorial (SCIT) paramedian approach in sitting position represents one of the most used surgical route for dealing with pineal region lesions. Purpose of our study is to determine the cornerstones to perform this approach in a simple, safe and effective way, so that it could be easily reproduced in other neurosurgical centers, particularly in those with modest resources. METHODS: We reviewed and analyzed the surgical videos of twenty-four pineal region lesions that were operated on through a SCIT approach between June 2012 and October 2015...
June 8, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28602497/anatomical-localization-of-the-cavernous-sinus-dural-fistula-by-3d-rotational-angiography-with-emphasis-on-clinical-and-therapeutic-implications
#16
Santhosh Kumar Kannath, Jayadevan Enakshy Rajan, Sankara P Sarma
BACKGROUND AND PURPOSE: Carotid cavernous sinus dural arteriovenous fistulas (CSDAVFs) are presumed to be located within the walls of the cavernous sinus, however the exact fistulous site has not yet been studied by angiographic or anatomical methods. The present study aimed to localize CSDAVFs with the help of 3D rotational angiography (RA) and correlated the observations with clinical and angiographic findings. MATERIALS AND METHODS: The CSDAVFs were categorized as dural, extradural or osseous based on the site of convergence of feeders into the venous sac...
June 8, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28596562/characterizing-haploinsufficiency-of-shell-gene-to-improve-fruit-form-prediction-in-introgressive-hybrids-of-oil-palm
#17
Chee-Keng Teh, Siti Dalila Muaz, Praveena Tangaya, Po-Yee Fong, Ai-Ling Ong, Sean Mayes, Fook-Tim Chew, Harikrishna Kulaveerasingam, David Appleton
The fundamental trait in selective breeding of oil palm (Eleais guineensis Jacq.) is the shell thickness surrounding the kernel. The monogenic shell thickness is inversely correlated to mesocarp thickness, where the crude palm oil accumulates. Commercial thin-shelled tenera derived from thick-shelled dura × shell-less pisifera generally contain 30% higher oil per bunch. Two mutations, sh (MPOB) (M1) and sh (AVROS) (M2) in the SHELL gene - a type II MADS-box transcription factor mainly present in AVROS and Nigerian origins, were reported to be responsible for different fruit forms...
June 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28593382/idiopathic-spinal-cord-herniation-consideration-of-its-pathogenesis-based-on-the-histopathology-of-the-dura-mater
#18
Satoru Shimizu, Yosuke Kobayashi, Hidehiro Oka, Toshihiro Kumabe
INTRODUCTION: We present a patient with idiopathic spinal cord herniation (ISCH) whose dura mater was histopathologically examined to elucidate its pathogenesis. CASE REPORT: A 33-year-old previously healthy man presented with progressive walking difficulty, spasticity of the right lower leg, and hyperesthesia below the right chest. Neuroimaging revealed right ventral displacement of the spinal cord at T5-6. The diagnosis was ISCH and he underwent release of the herniation from the ventral dural opening...
June 7, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28586935/endoscopic-management-of-arnold-chiari-malformation-type-i-with-or-without-syringomyelia
#19
Shailendra Ratre, Nishtha Yadav, Yad Ram Yadav, Vijay Singh Parihar, Jitin Bajaj, Yatin Kher
Introduction Several different surgical techniques have been used in the treatment of patients with symptomatic Arnold-Chiari malformation type 1 (ACM-1) with or without syrinx. Endoscope-assisted decompression of the posterior fossa has been found to be safe and effective. We report our initial experience of endoscopic management of ACM-I. Material and Methods This was a prospective study of 15 symptomatic patients. Pre- and postoperative clinical status and computed tomography and magnetic resonance imaging findings were recorded...
June 6, 2017: Journal of Neurological Surgery. Part A, Central European Neurosurgery
https://www.readbyqxmd.com/read/28584677/microvascular-decompression-for-hypoglossal-nerve-palsy-secondary-to-vertebral-artery-compression-a-case-report-and-review-of-the-literature
#20
Yasuhiro Kuroi, Shigeru Tani, Hidenori Ohbuchi, Hidetoshi Kasuya
BACKGROUND: Neurovascular-compression syndrome (NCS) is described as a prominent pathological contact between cranial nerves and vessels. Trigeminal neuralgia, hemifacial spasm, and glossopharyngeal neuralgia are typical clinical entities associated with NCS. On the other hand, the hyoglossal nerve is rarely affected by NCS. CASE DESCRIPTION: We present a case of hypoglossal nerve palsy (HNP) secondary to vertebral artery (VA) compression. A 47-year-old man presented to our hospital with a 1-month history of dysarthria and dysphagia...
2017: Surgical Neurology International
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