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fusion level

Fady Y Hijji, Dustin H Massel, Benjamin C Mayo, Ankur S Narain, William W Long, Krishna D Modi, Rory M Burke, Jeff Canar, Kern Singh
STUDY DESIGN: Retrospective analysis. OBJECTIVE: To compare perioperative costs and outcomes of patients undergoing single-level anterior cervical discectomy and fusions (ACDF) at both a service (orthopedic versus neurosurgical) and individual surgeon level. SUMMARY OF BACKGROUND DATA: Hospital systems are experiencing significant pressure to increase value of care by reducing costs while maintaining or improving patient-centered outcomes...
October 24, 2016: Spine
Yu Chen, Jing-Rong Lin, Ping-Jin Gao
Mitochondrial fission can occur via activation of dynamin-related protein 1 (Drp1), which participates in the mitochondrial membrane scission process. The present study was designed to investigate the effect of angiotensin II (AngII) on mitochondrial fission and fusion in human umbilical vascular endothelial cells (HUVECs). And we further inquire into whether Mdivi-1, a newly identified pharmacological inhibitor of Drp1, can prevent endothelial dysfunction induced by AngII. The HUVECs were treated with AngII alone or in combination with Mdivi-1...
October 25, 2016: Sheng Li Xue Bao: [Acta Physiologica Sinica]
Schneider K Rancy, Samir K Trehan, Angela E Li, Steve K Lee, Hollis G Potter, Scott W Wolfe
Background Previous authors have reported pisotriquetral pain and subsequent pisiform excision following partial or total wrist fusion in patients with scapholunate advanced collapse (SLAC). Prior studies have not considered the potential role of SLAC biomechanics on pisotriquetral osteoarthritis (PT OA) development preoperatively. Purpose To determine the prevalence and severity of PT OA in patients with SLAC as compared with a control population. Patients and Methods Magnetic resonance imaging (MRI) studies of 24 patients with SLAC wrist and 24 sex- and age-matched control patients were analyzed...
November 2016: Journal of Wrist Surgery
Brie Sorrenson, Emmanuelle Cognard, Kathryn L Lee, Waruni C Dissanayake, Yanyun Fu, Weiping Han, William E Hughes, Peter R Shepherd
The processes regulating glucose-stimulated insulin secretion (GSIS) and its modulation by incretins in pancreatic β-cells are only partly understood. Here we investigate the involvement of β-catenin in these processes. Reducing β-catenin levels using siRNA knockdown attenuated GSIS in a range of β-cell models and blocked the ability of GLP-1 agonists and the depolarizing agent KCl to potentiate this. This could be mimicked in both β-cell models and isolated islets by short-term exposure to the β-catenin inhibitory drug pyrvinium...
October 24, 2016: Journal of Biological Chemistry
Julian Li, Kevin Phan, Ralph Mobbs
OBJECTIVE: Anterior lumbar interbody fusion (ALIF) and lateral lumbar interbody fusion (LLIF) are commonly used approaches for lumbar spine fusion surgery, each with their own unique advantages and disadvantages. ALIF requires mobilization of the great vessels and peritoneum, while dissection of the psoas muscle in the LLIF technique is associated with post-operative neurological complications in the proximal lower limb. The anterior-to-psoas (ATP) or oblique lumbar interbody fusion (OLIF) technique is the proposed solution to accessing the L1-L5 levels without the issues encountered with ALIF and LLIF...
October 21, 2016: World Neurosurgery
Daipayan Guha, Raphael Jakubovic, Shaurya Gupta, Naif M Alotaibi, David Cadotte, Leodante B da Costa, Rajeesh George, Chris Heyn, Peter Howard, Anish Kapadia, Jesse M Klostranec, Nicolas Phan, Gamaliel Tan, Todd G Mainprize, Albert Yee, Victor X D Yang
BACKGROUND CONTEXT: Spinal intra-operative computer-assisted navigation (CAN) may guide pedicle screw placement. CAN techniques have been reported to reduce pedicle screw breach rates across all spinal levels. However, definitions of screw breach vary widely across studies, if reported at all. The absolute quantitative error of spinal navigation systems is theoretically a more precise and generalizable metric of navigation accuracy. It has also been computed variably, and reported in fewer than a quarter of clinical studies of CAN-guided pedicle screw accuracy...
October 21, 2016: Spine Journal: Official Journal of the North American Spine Society
S D Heintze, A Eser, D Monreal, V Rousson
OBJECTIVE: Dynamic loading is a more important predictor for the clinical longevity of ceramic crowns than static loading. However, dynamic loading machines are costly and mostly have only one test station. The SD Mechatronik Chewing Simulator (formerly Willytec) may be a cost-effective alternative to evaluate the fatigue resistance of metal ceramic crowns. METHOD: Four metal ceramic materials were tested on lower first molar crowns: GC InitiaI, Creation (Willy Geller), IPS InLine (Ivoclar Vivadent) and the new low-fusion IPS Style Ceram (Ivoclar Vivadent)...
September 14, 2016: Journal of the Mechanical Behavior of Biomedical Materials
Dana Marcus, Michal Lichtenstein, Natali Cohen, Rita Hadad, Tal Erlich-Hadad, Hagar Greif, Haya Lorberboum-Galski
Mitochondrial Targeting Sequences (MTSs) are responsible for trafficking nuclear-encoded proteins into mitochondria. Once entering the mitochondria, the MTS is recognized and cleaved off. Some MTSs are long and undergo two-step processing, as in the case of the human frataxin (FXN) protein (80aa), implicated in Friedreich's ataxia (FA). Therefore, we chose the FXN protein to examine whether nuclear-encoded mitochondrial proteins can efficiently be targeted via a heterologous MTS (hMTS) and deliver a functional protein into mitochondria...
October 19, 2016: International Journal of Biochemistry & Cell Biology
Howa Begam, Samit Kumar Nandi, Biswanath Kundu, Abhijit Chanda
Bone morphogenetic proteins (BMPs) are the most significant growth factors that belong to the Transforming Growth Factor Beta (TGF-β) super-family. Though more than twenty members of this family have been identified so far in humans, Food and Drug Administration (FDA) approved two growth factors: BMP-2 and BMP-7 for treatments of spinal fusion and long-bone fractures with collagen carriers. Currently BMPs are clinically used in spinal fusion, oral and maxillofacial surgery and also in the repair of long bone defects...
January 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
Bertram J Wilm, Christoph Barmet, Simon Gross, Lars Kasper, S Johanna Vannesjo, Max Haeberlin, Benjamin E Dietrich, David O Brunner, Thomas Schmid, Klaas P Pruessmann
PURPOSE: The purpose of this work was to improve the quality of single-shot spiral MRI and demonstrate its application for diffusion-weighted imaging. METHODS: Image formation is based on an expanded encoding model that accounts for dynamic magnetic fields up to third order in space, nonuniform static B0 , and coil sensitivity encoding. The encoding model is determined by B0 mapping, sensitivity mapping, and concurrent field monitoring. Reconstruction is performed by iterative inversion of the expanded signal equations...
October 21, 2016: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
Ricarda Lechner, David Putzer, Michael Liebensteiner, Christian Bach, Martin Thaler
PURPOSE: Bone graft substitutes have been successfully used in posterolateral lumbar fusion, anterior cervical fusion and animal studies. This study has been conducted to assess the safety and efficacy of β-tricalcium phosphate (β-TCP) in instrumented anterior lumbar interbody fusion (ALIF) procedure. METHODS: In a prospective clinical study, ALIF cages were prefilled with β-TCP and additionally fixated with posterior pedicle screw. Computed tomography (CT) and X-rays were performed one year after surgery...
October 21, 2016: International Orthopaedics
Jasper Stevens, Kenneth Meijer, Wouter Bijnens, Mathijs C H W Fuchs, Lodewijk W van Rhijn, Joris P S Hermus, Sander van Hoeve, Martijn Poeze, Adhiambo M Witlox
BACKGROUND: Arthrodesis of the first metatarsophalangeal (MTP1) joint is an intervention often used in patients with severe MTP1 joint osteoarthritis and relieves pain in approximately 80% of these patients. The kinematic effects and compensatory mechanism of the foot for restoring a more normal gait pattern after this intervention are unknown. The aim of this study was to clarify this compensatory mechanism, in which it was hypothesized that the hindfoot and forefoot would be responsible for compensation after an arthrodesis of the MTP1 joint...
October 21, 2016: Foot & Ankle International
Cristina Márquez, M Isabel López, Itziar Ruisánchez, M Pilar Callao
Two data fusion strategies (high- and mid-level) combined with a multivariate classification approach (Soft Independent Modelling of Class Analogy, SIMCA) have been applied to take advantage of the synergistic effect of the information obtained from two spectroscopic techniques: FT-Raman and NIR. Mid-level data fusion consists of merging some of the previous selected variables from the spectra obtained from each spectroscopic technique and then applying the classification technique. High-level data fusion combines the SIMCA classification results obtained individually from each spectroscopic technique...
December 1, 2016: Talanta
Ravinder Bamba, Thanapong Waitayawinyu, Ratnam Nookala, David Colton Riley, Richard B Boyer, Kevin W Sexton, Chinnakart Boonyasirikool, Sunyarn Niempoog, Nathaniel D Kelm, Mark D Does, Richard D Dortch, Robert Bruce Shack, Wesley P Thayer
BACKGROUND: Peripheral nerve injury can have a devastating impact on our military and veteran population. Current strategies for peripheral nerve repair include techniques such as nerve tubes, nerve grafts, tissue matrices, and nerve growth guides to enhance the number of regenerating axons. Even with such advanced techniques, it takes months to regain function. In animal models, polyethylene glycol (PEG) therapy has shown to improve both physiologic and behavioral outcomes after nerve transection by fusion of a portion of the proximal axons to the distal axon stumps...
November 2016: Journal of Trauma and Acute Care Surgery
Alexander A Theologis, Gregory M Mundis, Stacie Nguyen, David O Okonkwo, Praveen V Mummaneni, Justin S Smith, Christopher I Shaffrey, Richard Fessler, Shay Bess, Frank Schwab, Bassel G Diebo, Douglas Burton, Robert Hart, Vedat Deviren, Christopher Ames
OBJECTIVE The aim of this study was to evaluate the utility of supplementing long thoracolumbar posterior instrumented fusion (posterior spinal fusion, PSF) with lateral interbody fusion (LIF) of the lumbar/thoracolumbar coronal curve apex in adult spinal deformity (ASD). METHODS Two multicenter databases were evaluated. Adults who had undergone multilevel LIF of the coronal curve apex in addition to PSF with L5-S1 interbody fusion (LS+Apex group) were matched by number of posterior levels fused with patients who had undergone PSF with L5-S1 interbody fusion without LIF (LS-Only group)...
October 21, 2016: Journal of Neurosurgery. Spine
Faisal R Jahangiri, Sami Al Eissa, Samir Sayegh, Fahad Al Helal, Shomoukh A Al-Sharif, Monerah M Annaim, Sheryar Muhammad, Tanweer Aziz
A 16-year-old male patient with Ehler-Danlos syndrome (EDS) and a back deformity since birth presented with severe kyphoscoliosis. The patient was neurologically intact but had respiratory and cardiac insufficiencies. A two-stage vertebral column resection (VCR) at T9-T10 with multiple level fusion with multimodality intraoperative neurophysiological monitoring (IONM) was planned.  During the first stage, pedicle screws were placed at multiple spinal levels above and below the VCR level. Upper and lower somatosensory evoked potentials (SSEP), transcranial electrical motor evoked potentials (TCeMEP), and electromyography were monitored continuously and showed no significant changes...
August 31, 2016: Curēus
Sonia Carturan, Jessica Petiti, Valentina Rosso, Chiara Calabrese, Elisabetta Signorino, Giada Bot-Sartor, Paolo Nicoli, Daniela Gallo, Enrico Bracco, Alessandro Morotti, Cristina Panuzzo, Enrico Gottardi, Francesco Frassoni, Giuseppe Saglio, Daniela Cilloni
Meningioma 1 (MN1) gene overexpression has been reported in acute myeloid leukaemia (AML) patients and identified as a negative prognostic factor. In order to characterize patients presenting gene overexpression and to verify if MN1 transcript could be a useful marker for minimal residual disease detection, MN1 was quantified in 136 AML patients with different cytogenetic risk and in 50 normal controls. In 20 patients bearing a fusion gene transcript suitable for minimal residual disease quantitative assessment and in 8 patients with NPM1 mutation, we performed a simultaneous analysis of MN1 and the fusion-gene transcript or NPM1 mutation during follow-up...
September 27, 2016: Oncotarget
Erika Roddy, Mohammad Diab
BACKGROUND CONTEXT: Short-term readmission rates are becoming widely utilized as a quality and performance metrics for hospitals. Data on unplanned short-term readmission after spine fusion for deformity in pædiatric patients is limited. PURPOSE: To characterize the rate and risk factors for short-term readmission after spine fusion for deformity in pædiatric patients. STUDY DESIGN: Retrospective cohort study PATIENT SAMPLE: State In-Patient Databases from NY, UT, NE, FL, NC (years 2006-2010) and CA (years 2006-2011)...
October 17, 2016: Spine Journal: Official Journal of the North American Spine Society
Enrico Tessitore, Granit Molliqaj, Karl Schaller, Oliver Pascal Gautschi
Extreme lateral interbody fusion (XLIF) is an alternative to standard posterior approaches for achieving fusion in the lumbar spine. It allows exposure of the lateral aspect of the lumbar disc through a lateral approach with the possibility to insert a wide footprint interbody cage as a stand-alone procedure or associated with a uni- or bilateral percutaneous fixation. This is a retrospective series of 20 consecutive patients operated with a XLIF procedure from 2014 to 2015. N=10 women and N=10 men with a mean age of 67...
October 17, 2016: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
Shearwood McClelland, Joseph F Baker, Justin S Smith, Breton G Line, Thomas J Errico, Christopher P Ames, R Shay Bess
Parkinson's disease (PD) is a neurodegenerative disorder manifesting over time to result in reduced mobility. The impact of PD on spinal fusion has yet to be addressed on a nationwide level. The Nationwide Inpatient Sample (NIS) from 2001 to 2012 was used for analysis. Admissions with spinal fusion of two or more vertebrae (ICD-9 codes=81.62, 81.63 and 81.64) were included and then stratified based on the presence or absence of PD (ICD-9 code=332.0); patients with cancer (ICD-9 codes=140-239) or trauma (ICD-9 codes=805...
October 17, 2016: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
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