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https://www.readbyqxmd.com/read/28817417/brain-processing-of-the-temporal-dimension-of-acute-pain-in-short-term-memory
#1
Mina Khoshnejad, Mathieu Roy, Kristina Martinu, Jen-I Chen, Julien Cohen-Adad, Simon Grondin, Pierre Rainville
The dynamics of noxious sensation shapes pain perception, yet the memory of the temporal dimension of pain remains almost completely unexplored. Here, brain activity during the memory of pain duration was contrasted with that associated with the memory of pain intensity using functional magnetic resonance imaging (fMRI) and a delayed-reproduction task. Participants encoded, maintained during a short delay, and reproduced (1) the 'duration' of pain (i.e. onset-to-offset), (2) the 'dynamics' of pain (i.e. evolution of pain over time), or (3) the intensity of pain (i...
July 3, 2017: Pain
https://www.readbyqxmd.com/read/28814004/biomimetic-finger-extension-mechanism-for-soft-wearable-hand-rehabilitation-devices
#2
Dong Hyun Kim, Si-Hwan Heo, Hyung-Soon Park
For the rehabilitation and assistance of the hand functions, wearable devices have been developed, and the interest in tendon driven mechanisms have especially increased since it allows light weight and compact design. The tendon driven hand rehabilitation devices provides grasping force via exo-tendons routed on the dorsal and palmar sides of the hand pulled by remotely located actuators. However, most of the devices were not able to provide natural joint extension sequence of the finger and showed hyperextension of finger joints because the tendons for extension were fixed at the fingertip, concentrating the torque at the distal interphalangeal joint...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813809/development-of-elbow-spasticity-model-for-objective-training-of-spasticity-assessment-of-patients-post-stroke
#3
Jeong-Ho Park, Kwang-Jae Lee, Yong-Soon Yoon, Eun-Ji Son, Ji-Sun Oh, Si Hyun Kang, Heesang Kim, Hyung-Soon Park
Reliable assessment is essential for the management of spasticity, one of the most frequent complication of various neurological diseases. For the spasticity assessment, several clinical tools have been developed and widely used in clinics. The most popular one is modified Ashworth scale (MAS). It has a simple protocol, but is subjective and qualitative. To improve its reliability, quantitative measurement and consistent training would be needed. This study presents an elbow spasticity simulator which mimics spastic response of adult post stroke survivors...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28805781/-surgical-treatment-of-hip-subluxation-and-luxation-in-children-with-spinal-hernia-consequences
#4
S V Ivanov, A G Baindurashvili, V M Kenis
AIM: To determine surgical tactics for hip subluxation and luxation in children with spinal hernia consequences. MATERIAL AND METHODS: The study included 134 patients with hip subluxation and luxation with consequences of cerebrospinal hernias who were examined at the Turner Research Institute for Children's Orthopedics in 2006-2016. The main group consisted of 69 patients who received surgical treatment with hip joint stabilization. The control group included 65 children without surgery...
2017: Khirurgiia
https://www.readbyqxmd.com/read/28798229/role-of-technetium-99m-methylene-diphosphonate-spect-ct-in-the-detection-of-sacroiliitis-in-patients-with-spondyloarthropathy-comparison-with-clinical-markers-and-mri
#5
Rahul V Parghane, Baljinder Singh, Aman Sharma, Harmandeep Singh, Paramjit Singh, Anish Bhattacharya
Rationale: To evaluate the role of (99m)Tc-MDP SPECT/CT for the detection of sacroiliitis in spondyloarthopathies (SpA) and comparison with clinical markers and MRI. Methods: A total of 155 diagnosed patients (83M : 72 F; mean age 35.80±12.40 years; range 18-60 years ) with SpA as per the European Spondyloarthropathy Study Group criteria (ESSG) criteria were prospectively included All the patients were subjected to clinical evaluation (using BASDAI scoring), ESR, CRP levels, planar (99m)Tc MDP bone scintigraphy, hybrid SPECT/CT and MRI of the pelvic region...
August 10, 2017: Journal of Nuclear Medicine Technology
https://www.readbyqxmd.com/read/28765800/fortifying-the-bone-implant-interface-part-2-an-in-vivo-evaluation-of-3d-printed-and-tps-coated-triangular-implants
#6
Regina F MacBarb, Derek P Lindsey, Shane A Woods, Peggy A Lalor, Mukund I Gundanna, Scott A Yerby
BACKGROUND: Minimally invasive surgical fusion of the sacroiliac (SI) joint using machined solid triangular titanium plasma spray (TPS) coated implants has demonstrated positive clinical outcomes in SI joint pain patients. Additive manufactured (AM), i.e. 3D-printed, fenestrated triangular titanium implants with porous surfaces and bioactive agents, such as nanocrystalline hydroxyapatite (HA) or autograft, may further optimize bony fixation and subsequent biomechanical stability. METHODS: A bilateral ovine distal femoral defect model was used to evaluate the cancellous bone-implant interfaces of TPS-coated and AM implants...
2017: International Journal of Spine Surgery
https://www.readbyqxmd.com/read/28752971/-effects-of-low-magnitude-whole-body-vibration-wbv-on-knee-osteoarthritis-in-rabbits
#7
Jun-Bo Wang, Si-Jia Liu, Hong-Ying Chen, Pu Wang
OBJECTIVE: To determine the effects of low-magnitude whole body vibration (WBV) on the structure and function of subchondral trabecular bones, cartilage degradation, bone/cartilage turnover, and osteoarthritis (OA) joint function. METHODS: Knee osteoarthritis model was established in 96 rabbits through left anterior cruciate ligament transaction (ACLT). The rabbits were randomly divided into six groups: ACLT control group, WBV+ACLT group (five subgroups, each comprising 16 rabbits receiving 5 Hz, 10 Hz, 20 Hz, 30 Hz and 40 Hz WBV, respectively, with 2-4 mm amplitude for 40 min/d and 5 d/week over a period of 8 weeks)...
July 2017: Sichuan da Xue Xue Bao. Yi Xue Ban, Journal of Sichuan University. Medical Science Edition
https://www.readbyqxmd.com/read/28741177/birth-birth-death-processes-and-their-computable-transition-probabilities-with-biological-applications
#8
Lam Si Tung Ho, Jason Xu, Forrest W Crawford, Vladimir N Minin, Marc A Suchard
Birth-death processes track the size of a univariate population, but many biological systems involve interaction between populations, necessitating models for two or more populations simultaneously. A lack of efficient methods for evaluating finite-time transition probabilities of bivariate processes, however, has restricted statistical inference in these models. Researchers rely on computationally expensive methods such as matrix exponentiation or Monte Carlo approximation, restricting likelihood-based inference to small systems, or indirect methods such as approximate Bayesian computation...
July 24, 2017: Journal of Mathematical Biology
https://www.readbyqxmd.com/read/28740206/relation-between-arterial-stiffness-and-markers-of-inflammation-and-hemostasis-data-from-the-population-based-gutenberg-health-study
#9
Natalie Arnold, Tommaso Gori, Renate B Schnabel, Andreas Schulz, Jürgen H Prochaska, Tanja Zeller, Harald Binder, Norbert Pfeiffer, Manfred Beutel, Christine Espinola-Klein, Karl J Lackner, Stefan Blankenberg, Thomas Münzel, Philipp S Wild
The relation between inflammation, hemostasis and arterial stiffness is of pathophysiological relevance for the development of cardiovascular disease (CVD). Data investigating this interplay using stiffness index (SI) by digital photoplethysmography are not available yet. Therefore, sex-specific relation between SI and inflammatory and hemostatic biomarkers was investigated within 13,724 subjects from the population-based Gutenberg Health Study. C-reactive protein (CRP), white blood cell count (WBCC), neopterin, interleukin-18, interleukin-1 receptor antagonist (IL-1RA), fibrinogen and hematocrit were measured...
July 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28735116/surgical-technique-of-percutaneous-iliosacral-screw-fixation-in-s3-level-in-unstable-pelvic-fracture-with-closed-degloving-injury-and-morrell-lavallee-lesion-two-case-reports
#10
Ismail H Dilogo, Jessica Fiolin
INTRODUCTION: Percutaneous screw fixation is considered the best option in unstable pelvic fracture with severe soft tissue injury. However, fixation technique at the level of S3 has not been well established. This paper showed the feasible surgical technique of S3 screw insertion in unstable pelvic fracture with severe soft tissue injury. METHODS: We reported 2 cases of unstable pelvic injury of an 11 years old boy with Marvin-Tile (MT) C1 pelvic fracture with sacroiliac (SI) joint disruption, skin avulsion and Morel-Lavallée lesion...
July 8, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28729682/memristive-property-s-effects-on-the-i-v-characteristics-of-perovskite-solar-cells
#11
Kai Yan, Bin Dong, Xinyu Xiao, Si Chen, Buxin Chen, Xue Gao, Hsienwei Hu, Wen Wen, Jingbo Zhou, Dechun Zou
The unfavorable I-V characteristics of perovskite solar cells (PSCs), such as the I-V hysteresis phenomena, have been one major obstacle for their future practical application. However, corresponding analysis based on traditional theories have shown non-negligible flaws and failed for satisfactory explanation. To present a novel mechanism, here we utilize for the first time the memristive property of the perovskite material to analyze the I-V characteristics of PSCs. The obtained joint physical model and the deduced equation may help solving the long-existent mysteries of the I-V characteristics of PSCs...
July 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28727714/3d-morphometric-analysis-of-normal-sacroiliac-joints-a-new-classification-of-surface-shape-variation-and-the-potential-implications-in-pain-syndromes
#12
Mary Kristen Jesse, Christopher Kleck, Adam Williams, Brian Petersen, Deborah Glueck, Kimberly Lind, Vikas Patel
BACKGROUND: Normal sacroiliac (SI) joints vary widely in shape, and it is unclear whether SI joint morphology plays a role in the development of pain. To answer this question, we used 3D-CT surface rendering to image healthy study participants and used the resulting images to develop a classification system for SI joint morphology. In a case-control study comparing health research participants to patients with SI pain, we assessed whether the classification of SI joint morphology was associated with pain...
July 2017: Pain Physician
https://www.readbyqxmd.com/read/28698901/circulating-osteoprotegerin-levels-are-elevated-in-rheumatoid-arthritis-a-systematic-review-and-meta-analysis
#13
Peng Wang, Si Li, Li-Na Liu, Tian-Tian Lv, Xiao-Mei Li, Xiang-Pei Li, Hai-Feng Pan
This study aimed to systemically review the evidence regarding the relationship between the circulating blood osteoprotegerin (OPG) level and rheumatoid arthritis (RA), as well as the potential influential factors. Research related to plasma/serum OPG levels in RA patients and healthy controls were gathered using PubMed, EMBASE, and The Cochrane Library database (up to Jan. 1, 2017). Pooled standard mean difference (SMD) with 95% confidence interval (CI) was calculated by fixed-effects or random-effect model analysis...
July 11, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/28697842/-research-advances-in-immunological-pathogenesis-of-immunoglobulin-a-vasculitis
#14
Ya-Ting Liu, Si-Guang Lu
Immunoglobulin A (IgA) vasculitis is the most common leukocytoclastic small-vessel vasculitis in children and mainly involves the small vessels in the skin, joints, digestive tract, and kidneys. Its pathogenesis is still unclear. Currently, it is believed that environmental factors can cause autoimmune dysfunction and lead to the deposition of IgA-containing immune complexes on the wall of arterioles on the basis of genetic factors. This article reviews the research advances in the role of immune factors in the pathogenesis of IgA vasculitis...
July 2017: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/28685666/mri-findings-of-lumbar-spine-instability-in-degenerative-spondylolisthesis
#15
Il Youp Cho, Si Young Park, Jong Hoon Park, Seung Woo Suh, Soon Hyuck Lee
PURPOSE: To find out the factors suggesting lumbar segmental instability in patients with degenerative spondylolisthesis (DS) on conventional magnetic resonance imaging (MRI). METHODS: Ninety-four patients with DS who underwent decompression surgery with or without fusion were selected. Patient demographics and findings on simple radiographs and MRI were analyzed. We divided patients into two groups by the presence of lumbar instability on simple standing plain radiographs and measured degeneration status of intervertebral discs and facet joints and distance of facet fluid signal on T2 axial MRI on each groups...
May 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28663306/the-yield-of-a-positive-mri-of-the-spine-as-imaging-criterion-in-the-asas-classification-criteria-for-axial-spondyloarthritis-results-from-the-space-and-desir-cohorts
#16
Zineb Ez-Zaitouni, Pauline Ac Bakker, Miranda van Lunteren, Manouk de Hooge, Rosaline van den Berg, Monique Reijnierse, Karen Minde Fagerli, Robert Bm Landewé, Roberta Ramonda, Lennart Th Jacobsson, Alain Saraux, Gregory Lenczner, Antoine Feydy, Jean Baptiste Pialat, Fabrice Thévenin, Floris A van Gaalen, Désirée van der Heijde
OBJECTIVES: To assess the prevalence of spinal inflammation on MRI in patients with chronic back pain (CBP) of maximally 3 years duration and to evaluate the yield of adding a positive MRI-spine as imaging criterion to the Assessment of SpondyloArthritis international Society (ASAS) classification criteria for axial spondyloarthritis (axSpA). METHODS: Baseline imaging of the sacroiliac joints (X-SI), MRI of the sacroiliac joints (MRI-SI) and MRI-spine were scored by ≥2 experienced central readers per modality in the SPondyloArthritis Caught Early (SPACE) and DEvenir des Spondylarthropathies Indifférenciées Récentes (DESIR) cohorts...
June 29, 2017: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/28652802/comparison-of-quadrapolar%C3%A2-radiofrequency-lesions-produced-by-standard-versus-modified-technique-an-experimental-model
#17
Ramin Safakish
Lower back pain (LBP) is a global public health issue and is associated with substantial financial costs and loss of quality of life. Over the years, different literature has provided different statistics regarding the causes of the back pain. The following statistic is the closest estimation regarding our patient population. The sacroiliac (SI) joint pain is responsible for LBP in 18%-30% of individuals with LBP. Quadrapolar™ radiofrequency ablation, which involves ablation of the nerves of the SI joint using heat, is a commonly used treatment for SI joint pain...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/28640604/parametrization-of-a-reactive-force-field-reaxff-for-molecular-dynamics-simulations-of-si-nanoparticles
#18
Giovanni Barcaro, Susanna Monti, Luca Sementa, Vincenzo Carravetta
A novel computational approach, based on classical reactive molecular dynamics simulations (RMD) and quantum chemistry (QC) global energy optimizations, is proposed for modeling large Si nanoparticles. The force field parameters, which can describe bond breaking and formation, are derived by reproducing energetic and structural properties of a set of Si clusters increasing in size. These reference models are obtained through a new protocol based on a joint high temperature RMD/low temperature Basin Hopping QC search...
July 6, 2017: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/28633151/age-based-normative-measurements-of-the-pediatric-pelvis
#19
Matthew E Oetgen, Steven Andelman, Benjamin D Martin
OBJECTIVES: Pediatric pelvic trauma is associated with high rates of morbidity and mortality. Current classifications do not take into account age-dependent quantitative differences of the pediatric pelvis making accurate diagnosis of pathologic diastasis of the pubic symphysis, sacroiliac (SI) joints, and triradiate cartilage difficult. The purpose of this study was to establish age-based normative values for the width of the pubic symphysis, SI joints, and the triradiate cartilage of the pediatric pelvis...
July 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28627714/migraine-subclassification-via-a-data-driven-automated-approach-using-multimodality-factor-mixture-modeling-of-brain-structure-measurements
#20
Todd J Schwedt, Bing Si, Jing Li, Teresa Wu, Catherine D Chong
BACKGROUND: The current subclassification of migraine is according to headache frequency and aura status. The variability in migraine symptoms, disease course, and response to treatment suggest the presence of additional heterogeneity or subclasses within migraine. OBJECTIVE: The study objective was to subclassify migraine via a data-driven approach, identifying latent factors by jointly exploiting multiple sets of brain structural features obtained via magnetic resonance imaging (MRI)...
July 2017: Headache
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