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https://www.readbyqxmd.com/read/27920332/comparison-of-ankle-fusion-rates-with-and-without-anterior-plate-augmentation
#1
Phillip M Mitchell, Diana G Douleh, A Brian Thomson
BACKGROUND: The optimal fixation construct for tibiotalar arthrodesis continues to be debated. While biomechanical data and clinical series support anterior plate augmentation, comparative studies assessing its use are sparse. The purpose of this study was to compare the rates of successful tibiotalar arthrodesis with and without anterior plate augmentation of a compression screw construct. METHODS: We studied 64 patients (65 ankles) undergoing tibiotalar arthrodesis done by a single surgeon over a 10-year period (2006-2016) with anterior plate augmentation beginning in 2010...
December 5, 2016: Foot & Ankle International
https://www.readbyqxmd.com/read/27910598/analogue-saturation-limit-of-single-and-double-10-mm-microchannel-plate-photomultiplier-tubes
#2
J S Milnes, T M Conneely, C J Horsfield
Photek are a well-established supplier of microchannel plate (MCP) photomultiplier tubes (PMTs) to the inertial confinement fusion community. The analogue signals produced at the major inertial confinement fusion facilities cover many orders of magnitude, therefore understanding the upper saturation limit of MCP-PMTs to large low rate signals takes on a high importance. Here we present a study of a single and a double MCP-PMT with 10 mm diameter active area. The saturation was studied for a range of optical pulse widths from 4 ns to 100 ns and at a range of electron gain values: 10(3) to 10(4) for the single and 10(4) to 10(6) for the double...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910531/a-micro-scale-plasma-spectrometer-for-space-and-plasma-edge-applications-invited
#3
E E Scime, A M Keesee, M Dugas, S Ellison, J Tersteeg, G Wagner, A Barrie, A Rager, D Elliott
A plasma spectrometer design based on advances in lithography and microchip stacking technologies is described. A series of curved plate energy analyzers, with an integrated collimator, is etched into a silicon wafer. Tests of spectrometer elements, the energy analyzer and collimator, were performed with a 5 keV electron beam. The measured collimator transmission and energy selectivity were in good agreement with design targets. A single wafer element could be used as a plasma processing or fusion first wall diagnostic...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910454/development-of-fast-neutron-pinhole-camera-using-nuclear-emulsion-for-neutron-emission-profile-measurement-in-kstar
#4
Y Izumi, H Tomita, Y Nakayama, S Hayashi, K Morishima, M Isobe, M S Cheon, K Ogawa, T Nishitani, T Naka, T Nakano, M Nakamura, T Iguchi
We have developed a compact fast neutron camera based on a stack of nuclear emulsion plates and a pinhole collimator. The camera was installed at J-port of Korea superconducting tokamak advanced research at National Fusion Research Institute, Republic of Korea. Fast neutron images agreed better with calculated ones based on Monte Carlo neutron simulation using the uniform distribution of Deuterium-Deuterium (DD) neutron source in a torus of 40 cm radius.
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910429/automated-analysis-of-hot-spot-x-ray-images-at-the-national-ignition-facility
#5
S F Khan, N Izumi, S Glenn, R Tommasini, L R Benedetti, T Ma, A Pak, G A Kyrala, P Springer, D K Bradley, R P J Town
At the National Ignition Facility, the symmetry of the hot spot of imploding capsules is diagnosed by imaging the emitted x-rays using gated cameras and image plates. The symmetry of an implosion is an important factor in the yield generated from the resulting fusion process. The x-ray images are analyzed by decomposing the image intensity contours into Fourier and Legendre modes. This paper focuses on the additional protocols for the time-integrated shape analysis from image plates. For implosions with temperatures above ∼4 keV, the hard x-ray background can be utilized to infer the temperature of the hot spot...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910419/design-and-fabrication-of-a-window-for-the-gas-cherenkov-detector-3
#6
V E Fatherley, D A Bingham, M D Cartelli, R A DiDomizio, J R Griego, H W Herrmann, F E Lopez, J A Oertel, M J Pollack
The gas Cherenkov detector 3 was designed at Los Alamos National Laboratory for use in inertial confinement fusion experiments at both the Omega Laser Facility and the National Ignition Facility. This instrument uses a low-Z gamma-to-electron convertor plate and high pressure gas to convert MeV gammas into UV/visible Cherenkov photons for fast optical detection. This is a follow-on diagnostic from previous versions, with two notable differences: the pressure of the gas is four times higher, and it allows the use of fluorinated gas, requiring metal seals...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910309/spatial-resolution-measurements-of-the-advanced-radiographic-capability-x-ray-imaging-system-at-energies-relevant-to-compton-radiography
#7
G N Hall, N Izumi, O L Landen, R Tommasini, J P Holder, D Hargrove, D K Bradley, A Lumbard, J G Cruz, K Piston, J J Lee, E Romano, P M Bell, A C Carpenter, N E Palmer, B Felker, V Rekow, F V Allen
Compton radiography provides a means to measure the integrity, ρR and symmetry of the DT fuel in an inertial confinement fusion implosion near peak compression. Upcoming experiments at the National Ignition Facility will use the ARC (Advanced Radiography Capability) laser to drive backlighter sources for Compton radiography experiments and will use the newly commissioned AXIS (ARC X-ray Imaging System) instrument as the detector. AXIS uses a dual-MCP (micro-channel plate) to provide gating and high DQE at the 40-200 keV x-ray range required for Compton radiography, but introduces many effects that contribute to the spatial resolution...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27899848/a-radiographic-analysis-of-cage-positioning-in-lateral-transpsoas-lumbar-interbody-fusion
#8
Timothy L T Siu, Elmira Najafi, Kainu Lin
Direct Lumbar Interbody Fusion (DLIF) and eXtreme Lateral Interbody Fusion (XLIF) are the most common surgical platforms available for performing transpsoas spinal fusion but no study has been carried out to compare them. We evaluated 21 DLIF and 22 XLIF cage positions by measuring the distance between the posterior vertebral border and the centre of the cage normalised to the midsagittal length of the inferior end plate. We found that DLIF cages were significantly more anteriorly located than XLIF (0.65 vs 0...
March 2017: Journal of Orthopaedics
https://www.readbyqxmd.com/read/27898451/the-effect-of-dynamic-versus-static-plating-systems-on-fusion-rates-and-complications-in-1-level-and-or-2-level-anterior-cervical-discectomy-and-fusion-a-systematic-review
#9
Gregory D Schroeder, Christopher K Kepler, Douglas A Hollern, Ricardo Rodrigues-Pinto, Mark F Kurd, Jefferson R Wilson, Mitchell G Maltenfort, Jonathan T Paul, Andrew N Fleischman, Kathryn Dwight, Paul W Millhouse, Alexander R Vaccaro
STUDY DESIGN: A systematic review. OBJECTIVE: To determine the effect of plate design on fusion rates in patients undergoing a 1- and 2-level anterior cervical discectomy and fusion (ACDF). METHODS: Articles published between January 1, 2002 and January 1, 2015 were systematically reviewed to determine the fusion rate of 1- and 2-level ACDFs using either a fully constrained or semiconstrained locking plate. Additional variables that were collected included the number of levels, the type of graft/cage used, the study design, the method for determining fusion, and complications...
November 28, 2016: Clinical Spine Surgery
https://www.readbyqxmd.com/read/27888023/integrated-process-for-the-purification-and-immobilization-of-the-envelope-protein-domain-iii-of-dengue-virus-type-2-expressed-in-rachiplusia-nu-larvae-and-its-potential-application-in-a-diagnostic-assay
#10
María Emilia Smith, Alexandra Marisa Targovnik, Julieta Cerezo, María Alejandra Morales, María Victoria Miranda, Julián Rodríguez Talou
Dengue incidence has grown dramatically in the last years, with about 40% of the world population at risk of infection. Recently, a vaccine developed by Sanofi Pasteur has been registered, but only in a few countries. Moreover, specific antiviral drugs are not available. Thus, an efficient and accurate diagnosis is important for disease management. To develop a low-cost immunoassay for dengue diagnosis, in the present study we expressed the envelope protein domain III of dengue virus type 2 in Rachiplusia nu larvae by infection with a recombinant baculovirus...
November 22, 2016: Protein Expression and Purification
https://www.readbyqxmd.com/read/27885472/a-prospective-randomized-trial-comparing-anterior-cervical-discectomy-and-fusion-versus-plate-only-open-door-laminoplasty-for-the-treatment-of-spinal-stenosis-in-degenerative-diseases
#11
Yun-Qi Jiang, Xi-Lei Li, Xiao-Gang Zhou, Chong Bian, Han-Ming Wang, Jian-Ming Huang, Jian Dong
OBJECTIVE: For three or more involved cervical levels, there is a debate over which approach yields the best outcomes for the treatment of multilevel cervical degenerative disease. Our objective is to compare the radiological and clinical outcomes of two treatments for multilevel cervical degenerative disease: anterior cervical discectomy and fusion (ACDF) versus plate-only open-door laminoplasty (laminoplasty). METHODS: Patients were randomized on a 1:1 randomization schedule with 17 patients in the ACDF group and 17 patients in the laminoplasty group...
November 24, 2016: European Spine Journal
https://www.readbyqxmd.com/read/27861953/a-novel-streptavidin-luciferase-fusion-protein-preparation-properties-and-application-in-hybridization-analysis-of-dna
#12
D V Smirnova, M Y Rubtsova, V G Grigorenko, N N Ugarova
A streptavidin-luciferase fusion protein comprising the thermostable mutant form of firefly luciferase Luciola mingrelica and minimal core streptavidin was constructed. The streptavidin-luciferase fusion was mainly produced in a tetrameric form with high luciferase and biotin-binding activities. It was shown, that fusion has the same Km values for ATP and luciferin and the bioluminescence spectra as initial luciferase. The linear dependence of the bioluminescence signal on the content of the fusion was observed within the range of 10(-18) -10(-13) mol per well...
November 14, 2016: Photochemistry and Photobiology
https://www.readbyqxmd.com/read/27857796/dwarf-with-dual-spinal-kyphotic-deformity-at-the-cervical-and-dorsal-spine-unassociated-with-odontoid-hypoplasia-surgical-management
#13
Guru Dutta Satyarthee, Dipanker Singh Mankotia
Morquio's syndrome is associated with systemic skeletal hypoplasia leading to generalized skeletal deformation. The hypoplasia of odontoid process is frequent association, which is responsible for atlantoaxial dislocation causing compressive myelopathy. However, development of sub-axial cervical kyphotic deformity unassociated with odontoid hypoplasia is extremely rare, and coexistence of dorsal kyphotic deformity is not reported in the western literature till date and represents first case. Current case is 16-year-old boy, who presented with severe kyphotic deformity of cervical spine with spastic quadriparesis...
July 2016: Journal of Pediatric Neurosciences
https://www.readbyqxmd.com/read/27846861/intraosseous-inflammatory-myofibroblastic-tumor-of-the-mandible-with-a-novel-atic-alk-fusion-mutation-a-case-report
#14
Yoko Tateishi, Koji Okudela, Shigeo Kawai, Takehisa Suzuki, Shigeaki Umeda, Mai Matsumura, Mitomu Kioi, Kenichi Ohashi
BACKGROUND: Inflammatory myofibroblastic tumor (IMT) is a rare low-grade malignant neoplasm with a predilection for children and young adults, and typically arises in the lung, abdominopelvic region, and retroperitoneum. IMTs in the maxillofacial region are extreme rare. Approximately 50% of IMT harbor rearrangements of the anaplastic lymphoma kinase (ALK) gene at 2p23 with various fusion partners. CASE PRESENTATION: We herein report a case of intraosseous IMT of the mandible with a novel ATIC-ALK fusion...
November 15, 2016: Diagnostic Pathology
https://www.readbyqxmd.com/read/27832806/diagnosis-of-extraskeletal-myxoid-chondrosarcoma-in-the-thigh-using-ewsr1-nr4a3-gene-fusion-a-case-report
#15
Hiroki Kobayashi, Kazutaka Kikuta, Tetsuya Sekita, Michiro Susa, Kazumasa Nishimoto, Aya Sasaki, Kaori Kameyama, Shintaro Sugita, Tadashi Hasegawa, Masaya Nakamura, Morio Matsumoto, Hideo Morioka
BACKGROUND: Extraskeletal myxoid chondrosarcoma is a rare soft tissue sarcoma that has unusual ultrastructural and molecular features. However, unlike other soft tissue sarcomas, it does not have specific clinical symptoms or radiological features, which can make its diagnosis difficult. Nevertheless, extraskeletal myxoid chondrosarcoma has a rare gene fusion (EWSR1-NR4A3) that is useful for making a differential diagnosis. CASE PRESENTATION: A 43-year-old Japanese man presented with a soft tissue mass in his right thigh...
November 10, 2016: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/27821660/limb-salvage-after-failed-initial-operative-management-of-bimalleolar-ankle-fractures-in-diabetic-neuropathy
#16
Nicholas J Vaudreuil, Mitchell S Fourman, Dane K Wukich
BACKGROUND: Ankle fractures in patients with diabetes mellitus (DM) can be difficult to manage, especially in the presence of peripheral neuropathy. In patients who fail initial operative management, attempts at limb salvage can be challenging, and no clear treatment algorithm exists. This study examined outcomes of different procedures performed for limb salvage in this population. METHODS: This study retrospectively reviewed 17 patients with DM complicated by peripheral neuropathy who sustained a bimalleolar ankle fracture and failed initial operative management...
November 7, 2016: Foot & Ankle International
https://www.readbyqxmd.com/read/27817136/management-of-destructive-candida-albicans-spondylodiscitis-of-the-cervical-spine-a-systematic-analysis-of-literature-illustrated-by-an-unusual-case
#17
REVIEW
Josef Stolberg-Stolberg, Dagmar Horn, Steffen Roßlenbroich, Oliver Riesenbeck, Stefanie Kampmeier, Michael Mohr, Michael J Raschke, René Hartensuer
PURPOSE: Candida induced spondylodiscitis of the cervical spine in immunocompetent patients is an extremely rare infectious complication. Since clinical symptoms might be nonspecific, therapeutic latency can lead to permanent spinal cord damage, sepsis and fatal complications. Surgical debridement is strongly recommended but there is no standard antimycotic regime for postsurgical treatment. This paper summarizes available data and demonstrates another successfully treated case. METHODS: The systematic analysis was performed according to the preferred reporting items for systematic reviews and meta-analyses (PRISMA) guidelines...
November 5, 2016: European Spine Journal
https://www.readbyqxmd.com/read/27805449/biomechanical-assessment-of-the-effects-of-vertebral-distraction-fusion-techniques-on-the-adjacent-segment-of-canine-cervical-vertebrae
#18
Takaharu Hakozaki, Tomu Ichinohe, Nobuo Kanno, Takuya Yogo, Yasuji Harada, Tadashi Inaba, Yuichi Kasai, Yasushi Hara
OBJECTIVE To assess effects of vertebral distraction-fusion techniques at a treated segment (C5-C6) and an adjacent segment (C4-C5) of canine cervical vertebrae. SAMPLE Cervical vertebrae harvested from cadavers of 10 skeletally mature Beagles. PROCEDURES Three models (intact, titanium plate, and polymethylmethacrylate [PM MA]) for stabilization of the caudal region of the cervical vertebrae (C4 through C7) were applied to the C5-C6 vertebral segment sequentially on the same specimens. Biomechanical assessments with flexion-extension, lateral bending, and axial rotational tests were conducted after each procedure...
November 2016: American Journal of Veterinary Research
https://www.readbyqxmd.com/read/27800203/surgical-treatment-for-occipital-condyle-fracture-c1-dislocation-and-cerebellar-contusion-with-hemorrhage-after-blunt-head-trauma
#19
Shigeo Ueda, Nobuhiro Sasaki, Miyuki Fukuda, Minoru Hoshimaru
Occipital condyle fractures (OCFs) have been treated as rare traumatic injuries, but the number of reported OCFs has gradually increased because of the popularization of computed tomography (CT) and magnetic resonance imaging (MRI). The patient in this report presented with OCFs and C1 dislocation, along with traumatic cerebellar hemorrhage, which led to craniovertebral junction instability. This case was also an extremely rare clinical condition in which the patient presented with traumatic lower cranial nerve palsy secondary to OCFs...
2016: Case Reports in Orthopedics
https://www.readbyqxmd.com/read/27799985/comparison-of-radiologic-outcomes-of-different-methods-in-single-level-anterior-cervical-discectomy-and-fusion
#20
O Ik Kwon, Dong Wuk Son, Sang Weon Lee, Geun Sung Song
OBJECTIVE: Anterior cervical discectomy and fusion (ACDF) is a choice of surgical procedure for cervical degenerative diseases associated with radiculopathy or myelopathy. However, the patients undergoing ACDF still have problems. The purpose of the present study is to evaluate the radiologic results of 3 different methods in single-level ACDF. METHODS: We conducted a retrospective collection of radiological data from January 2011 to December 2014. A total of 67 patients were included in this study...
September 2016: Korean Journal of Spine
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