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https://www.readbyqxmd.com/read/28437347/effect-of-coronal-scoliotic-curvature-on-sagittal-spinal-shape-analysis-of-parameters-in-mature-adolescent-scoliosis-patients
#1
Jae-Young Hong, Keon-Woo Kim, Seung-Woo Suh, Si-Young Park, Jae-Hyuk Yang
STUDY DESIGN: A radiographic analysis with scoliosis patients. OBJECTIVES: To analyze correlations between sagittal spinal alignment and coronal scoliotic curvature. SUMMARY OF BACKGROUND DATA: Sagittal spinal alignment and scoliosis may have a significant relationship, and schematic analysis is needed. METHODS: The study group was comprised of 163 patients with adolescent idiopathic scoliosis. Subjects underwent anteroposterior and lateral radiographs of the whole spine including hip joints...
May 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28428726/successful-treatment-of-prosthetic-joint-infection-due-to-vancomycin-resistant-enterococci-with-tedizolid
#2
Sheng Si, Michael J Durkin, Maureen M Mercier, Melanie L Yarbrough, Stephen Y Liang
Few antibiotic options exist for the management of infections due to vancomycin-resistant enterococci (VRE). We describe a case involving the safe and successful use of tedizolid, a new oxazolidinone, to treat VRE prosthetic joint infection.
March 2017: Infectious Diseases in Clinical Practice: IDCP
https://www.readbyqxmd.com/read/28419029/females-with-unexplained-joint-pain-following-total-joint-arthroplasty-exhibit-a-higher-rate-and-severity-of-hypersensitivity-to-implant-metals-compared-with-males-implications-of-sex-based-bioreactivity-differences
#3
Marco S Caicedo, Edward Solver, Latasha Coleman, Joshua J Jacobs, Nadim J Hallab
BACKGROUND: Recent studies indicate that females demonstrate an increased risk of experiencing adverse local tissue reactions, aseptic loosening, and revision after primary metal-on-metal hip resurfacing arthroplasty compared with males; the underlying biological mechanisms responsible for sex discrepancies in implant failure remain unclear. In addition to anatomical and biomechanical sex differences, there may be inherent immunological disparities that predispose females to more aggressive adaptive immune reactivity to implant debris, i...
April 19, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28399875/asas-definition-for-sacroiliitis-on-mri-in-spa-applicable-to-children
#4
Nele Herregods, Joke Dehoorne, Filip Van den Bosch, Jacob Lester Jaremko, Joke Van Vlaenderen, Rik Joos, Xenofon Baraliakos, Gaëlle Varkas, Koenraad Verstraete, Dirk Elewaut, Lennart Jans
BACKGROUND: The Assessment of Spondyloarthritis International Society (ASAS) definition for a 'positive' Magnetic Resonance Imaging (MRI) for sacroiliitis is well studied and validated in adults, but studies about the value of this definition in children are lacking. The aim of this study is to evaluate whether the adult ASAS definition of a positive MRI of the sacroiliac joints can be applied to children with a clinical suspicion of Juvenile Spondyloarthritis (JSpA). METHODS: Two pediatric musculoskeletal radiologists blinded to clinical data independently retrospectively reviewed sacroiliac (SI) joint MRI in 109 children suspected of sacroiliitis...
April 11, 2017: Pediatric Rheumatology Online Journal
https://www.readbyqxmd.com/read/28399606/-diagnosis-of-patients-with-painful-sacroiliac-joint-syndrome
#5
Rahel Bornemann, Robert Pflugmacher, Ernst M W Koch, Philip Peter Roessler, Yorck Rommelspacher, Dieter Christian Wirtz, Sönke Percy Frey
Pain coming from the sacroiliac (SI) joints can explain up to 25 % of all chronic low back pain. A careful differential diagnosis is required to avoid misdiagnosis of low back pain. In addition to historical findings, positive findings on physical examination maneuvers that stress the SI joint are a key component diagnosis. The SI joint is confirmed as a pain generator when intraarticular injection of local anaesthetics provides acute back pain relief. Minimally invasive SI joint fusion is clearly superior to invasive open surgical procedures, with decreased blood loss and tissue disruption, shorter procedure times and shorter hospital stays...
April 11, 2017: Zeitschrift Für Orthopädie und Unfallchirurgie
https://www.readbyqxmd.com/read/28391395/biomechanical-analysis-of-anterior-ring-fixation-of-the-ramus-in-type-c-pelvis-fractures
#6
S McLachlin, M Lesieur, D Stephen, H Kreder, C Whyne
PURPOSE: This biomechanical study compared the stability of four different ramus fracture fixation methods for Type C pelvic ring injuries in the absence of posterior fixation. METHODS: A 5-mm vertical osteotomy of the mid-superior and inferior pubic ramus was created in 12 synthetic pelvic models. Four surgical constructs were compared: (1) two-pin AIIS external fixation, (2) 3.5-mm reconstruction plating, (3) bicortical, fully threaded 3.5-mm, and (4) 6.5-mm pubic ramus screws...
April 8, 2017: European Journal of Trauma and Emergency Surgery: Official Publication of the European Trauma Society
https://www.readbyqxmd.com/read/28388969/is-ct-indicated-in-diagnosing-sacroiliac-joint-degeneration
#7
J Bäcklund, E Clewett Dahl, M Skorpil
AIM: To assess the value of computed tomography (CT) in the diagnosis of symptomatic sacroiliac (SI) joint degeneration. MATERIALS AND METHODS: CT images from 123 patients with clinically diagnosed SI joint pain were compared to age- and gender-matched controls without chronic back pain or previous back surgery. Degeneration was graded assessing joint space narrowing, osteophytes, subchondral sclerosis, cysts, and vacuum phenomena. RESULTS: The mean total score for the patients was 9...
April 4, 2017: Clinical Radiology
https://www.readbyqxmd.com/read/28386571/the-broken-ring-of-fire-a-new-radiological-sign-as-predictor-of-syndesmosis-injury
#8
James Calder, Adam Mitchell, Adam Lomax, Moez S Ballal, John Grice, Niek van Dijk, Justin Lee
BACKGROUND: Subcircumferential periosteal edema above the ankle joint is frequently present on magnetic resonance imaging (MRI) with syndesmosis injuries but has not been previously reported. Fluid height within the interosseous membrane also has not previously been shown to be associated with syndesmosis injury severity. PURPOSE: To investigate whether a new sign on MRI and measurement of the length of fluid within the interosseous membrane above the ankle may be used to enable identification of a syndesmosis injury and allow differentiation from lateral ligament injury...
March 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28337303/the-involvement-and-possible-mechanism-of-nr4a1-in-chondrocyte-apoptosis-during-osteoarthritis
#9
Xinge Shi, Hui Ye, Xuedong Yao, Yanzheng Gao
Osteoarthritis (OA) is a joint disease caused by the breakdown of joint cartilage and underlying bone, and places great burdens to daily life of patients. Nuclear orphan receptor nuclear receptor subfamily 4, group A, member 1 (NR4A1) is vital for cell apoptosis, but little is known about its role in OA. This study aims to reveal the expression and function of NR4A1 during OA chondrocyte apoptosis. NR4A1 expression by qRT-PCR and western blot, and chondrocyte apoptosis by TUNEL assay were detected in normal and OA joint cartilage...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28328825/prevalence-of-symptomatic-hip-knee-and-spine-osteoarthritis-nationwide-health-survey-analysis-of-an-elderly-korean-population
#10
Jung-Ho Park, Jae-Young Hong, Kyungdo Han, Seung-Woo Suh, Si-Young Park, Jae-Hyuk Yang, Seung-Woo Han
Osteoarthritis is prominent among the elderly, with symptoms originating from multiple parts of the body. A cross-sectional study of a nationwide survey was performed to describe the prevalence of and identify factors related to symptomatic hip, knee, and spine osteoarthritis.This cross-sectional study collected data from the Fifth Korean National Health and Nutrition Examination Survey (KNHANES V-5; 2010-2012). After excluding ineligible subjects, there were 8976 subjects in this study (3830 males and 5146 females)...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28322381/first-principles-and-experimental-characterization-of-the-electronic-properties-of-cagasin3-and-caalsin3-the-impact-of-chemical-disorder
#11
Robin Niklaus, Ján Minár, Jonas Häusler, Wolfgang Schnick
We report a detailed investigation of the electronic, mechanical and optical properties of the recently discovered nitridogallosilicate CaGaSiN3 which has potential as a LED-phosphor host material. We focus on chemical disorder effects, originating from the Ga/Si site, and compared them to those of isostructural CaAlSiN3. We calculate the elastic moduli and the Debye temperature in terms of quasi harmonical approximation. Spectral properties like the joint density of states (JDOS) are evaluated and the absorption, reflectance and energy loss function are obtained from the dielectric function...
March 21, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28321445/planar-b38-and-b37-clusters-with-a-double-hexagonal-vacancy-molecular-motifs-for-borophenes
#12
Qiang Chen, Wen-Juan Tian, Lin-Yan Feng, Hai-Gang Lu, Yue-Wen Mu, Hua-Jin Zhai, Si-Dian Li, Lai-Sheng Wang
Boron clusters have been found to exhibit a variety of interesting electronic, structural, and bonding properties. Of particular interest are the recent discoveries of the 2D hexagonal B36(-/0) which led to the concept of borophenes and the 3D fullerene-like B40(-/0) which marked the onset of borospherene chemistry. Here, we present a joint photoelectron spectroscopic and first-principles study of B37(-) and B38(-), which are in the transition size range between the 2D borophene-type clusters and the 3D borospherenes...
March 21, 2017: Nanoscale
https://www.readbyqxmd.com/read/28303844/significance-of-diffusion-tensor-imaging-of-vastus-medialis-oblique-in-recurrent-patellar-dislocation
#13
Li-Si Liu, Zhuo-Zhao Zheng, Hui-Shu Yuan
BACKGROUND: Numerous studies have investigated the influence of osseous factors on patellofemoral joint instability, but research on the influence of dynamic muscle factors in vivo is still in the exploratory stage. This study aimed to use magnetic resonance imaging (MRI) and diffusion tensor imaging (DTI) to evaluate vastus medialis oblique (VMO) fiber bundles in patients with recurrent patellar dislocation to explore the changes in muscle morphology and function. METHODS: This prospective study involved 30 patients (7 males and 23 females; average age, 21...
March 20, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28288044/the-accessory-sacroiliac-joint-diagnosed-with-bone-spect-ct
#14
Ji-Hun Kang, Min-Woo Kim, Eun Ha Moon, Young Jun Kim, Ki Pi Yu
The accessory sacroiliac (SI) joint is not rare and can be one of the causes of lower back pain. We present a case of a 35-year-old woman with chronic lower back pain. Conventional radiography was equivocal, and bone scintigraphy showed a focus of mildly increased uptake in left SI joint region. SPECT/CT revealed increased uptakes in the accessory articulations between both sacral alae and iliac bones, and confirmed the diagnosis of accessory SI joint. This case illustrates the SPECT/CT findings of the accessory SI joint...
March 10, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28286523/interobserver-agreement-in-magnetic-resonance-of-the-sacroiliac-joints-in-patients-with-spondyloarthritis
#15
Juan C Rueda, Sofia Arias-Correal, Andres Y Vasquez, Enrique Calvo, Paola Peña, Marlon Porras, Jose-Ignacio Angarita, Eugenia-Lucia Saldarriaga, Ana M Santos, John Londono
Background. Clinical, laboratory, and radiologic parameters are used for diagnosis and classification of spondyloarthritis (SpA). Magnetic resonance imaging (MRI) of sacroiliac (SI) joints is being increasingly used to detect early sacroiliitis. We decided to evaluate the interobserver agreement in MRI findings of SI joints of SpA patients between a local radiologist, a rheumatologist, and an expert radiologist in musculoskeletal diseases. Methods. 66 MRI images of the SI joints of patients with established diagnosis of SpA were evaluated...
2017: International Journal of Rheumatology
https://www.readbyqxmd.com/read/28283515/comparison-of-mri-with-radiography-for-detecting-structural-lesions-of-the-sacroiliac-joint-using-ct-as-standard-of-reference-results-from-the-simact-study
#16
Torsten Diekhoff, Kay-Geert A Hermann, Juliane Greese, Carsten Schwenke, Denis Poddubnyy, Bernd Hamm, Joachim Sieper
OBJECTIVE: Radiographs of sacroiliac (SI) joints are used for the detection of structural damage in patients with axial spondyloarthritis (axSpA), but are often difficult to interpret. Here, we address the question how the T1-weighted MRI (T1w MRI) sequence compares with radiography for SI joints' structural lesions using low-dose CT as the standard of reference. METHODS: Radiographs, T1w MRI and low-dose CT of the SI joints from 110 patients (mean age 36.1 (19-57) years, 52% males and 48% females; 53% with axSpA, 21 non-radiographic axSpA and 32% radiographic axSpA, 47% with non-SpA) referred to the rheumatologist because of unclear chronic back pain, but possible axSpA, were scored for structural lesions (erosions, sclerosis, joint space changes and an overall impression of positivity)...
March 10, 2017: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/28282549/atomic-resolution-chemical-mapping-of-ordered-precipitates-in-al-alloys-using-energy-dispersive-x-ray-spectroscopy
#17
Sigurd Wenner, Lewys Jones, Calin D Marioara, Randi Holmestad
Scanning transmission electron microscopy (STEM) coupled with energy-dispersive X-ray spectroscopy (EDS) is a common technique for chemical mapping in thin samples. Obtaining high-resolution elemental maps in the STEM is jointly dependent on stepping the sharply focused electron probe in a precise raster, on collecting a significant number of characteristic X-rays over time, and on avoiding damage to the sample. In this work, 80kV aberration-corrected STEM-EDS mapping was performed on ordered precipitates in aluminium alloys...
May 2017: Micron: the International Research and Review Journal for Microscopy
https://www.readbyqxmd.com/read/28278383/3d-printed-poly-%C3%AE%C2%B5-caprolactone-scaffold-augmented-with-mesenchymal-stem-cells-for-total-meniscal-substitution
#18
Zheng-Zheng Zhang, Shao-Jie Wang, Ji-Ying Zhang, Wen-Bo Jiang, Ai-Bing Huang, Yan-Song Qi, Jian-Xun Ding, Xue-Si Chen, Dong Jiang, Jia-Kuo Yu
BACKGROUND: Total meniscectomy leads to knee osteoarthritis in the long term. The poly(ε-caprolactone) (PCL) scaffold is a promising material for meniscal tissue regeneration, but cell-free scaffolds result in relatively poor tissue regeneration and lead to joint degeneration. HYPOTHESIS: A novel, 3-dimensional (3D)-printed PCL scaffold augmented with mesenchymal stem cells (MSCs) would offer benefits in meniscal regeneration and cartilage protection. STUDY DESIGN: Controlled laboratory study...
March 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28268344/the-variability-of-co-activation-pattern-of-antagonist-muscles-in-human-infant-crawling
#19
Qi L Xiong, Xiao Y Wu, Nong Xiao, Si Y Zeng, Xiao L Zheng, Di Wu, Wen S Hou
Infant crawling is part of normal human gross motor development, and a 4-beat gait that involves rhythmical flexion and extension of limbs and the underlying muscle co-activation of antagonist muscle around the joint. However, detection the co-activation pattern of antagonist muscle are sparse due to the general difficulty of measuring locomotion in human infants. In this paper, sEMG of antagonist muscles and the corresponding kinematics data of limbs were collected when infants were crawling on hands and knees at their self-selected speed...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28255260/lumbar-radiofrequency-rhizotomy-in-patients-with-chronic-low-back-pain-increases-the-diagnosis-of-sacroiliac-joint-dysfunction-in-subsequent-follow-up-visits
#20
Varun Kumar Rimmalapudi, Sanjeev Kumar
Chronic back pain is often a result of coexisting pathologies; secondary causes of pain can become more apparent sources of pain once the primary pathology has been addressed. The objective of our study was to determine if there is an increase in diagnosis of Sacroiliac joint pain following a Lumbar Rhizotomy. A list of patients who underwent Lumbar Radiofrequency during a 6-month period in our clinic was generated. Records from subsequent clinic visits were reviewed to determine if a new diagnosis of SI joint pathology was made...
2017: Pain Research & Management: the Journal of the Canadian Pain Society
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