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https://www.readbyqxmd.com/read/28091737/impact-of-pelvic-fractures-on-the-early-clinical-outcomes-of-severely-injured-trauma-patients
#1
K Almahmoud, R Pfeifer, K Al-Kofahi, A Hmedat, W Hyderabad, F Hildebrand, A B Peitzman, H-C Pape
BACKGROUND: Pelvic fractures contribute to morbidity and mortality following injury. We sought to study the impact of pelvic fractures on the clinical course and outcomes of trauma patients with a pelvic fracture in comparison to patients with similar injury severity without pelvic fracture to identify potential parameters to track patients' clinical course post-injury. METHODS: A cohort of 206 consecutive blunt trauma survivors, studied over a 5-year period in a level I trauma center of which 75 patients (36...
January 13, 2017: European Journal of Trauma and Emergency Surgery: Official Publication of the European Trauma Society
https://www.readbyqxmd.com/read/28091599/a-comprehensive-numerical-model-for-simulating-fluid-transport-in-nanopores
#2
Yuan Zhang, Wei Yu, Kamy Sepehrnoori, Yuan Di
Since a large amount of nanopores exist in tight oil reservoirs, fluid transport in nanopores is complex due to large capillary pressure. Recent studies only focus on the effect of nanopore confinement on single-well performance with simple planar fractures in tight oil reservoirs. Its impacts on multi-well performance with complex fracture geometries have not been reported. In this study, a numerical model was developed to investigate the effect of confined phase behavior on cumulative oil and gas production of four horizontal wells with different fracture geometries...
January 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28091427/evaluation-of-surface-characteristics-of-rotary-nickel-titanium-instruments-produced-by-different-manufacturing-methods
#3
U Inan, M Gurel
BACKGROUND: Instrument fracture is a serious concern in endodontic practice. OBJECTIVE: The aim of this study was to investigate the surface quality of new and used rotary nickel-titanium (NiTi) instruments manufactured by the traditional grinding process and twisting methods. MATERIALS AND METHODS: Total 16 instruments of two rotary NiTi systems were used in this study. Eight Twisted Files (TF) (SybronEndo, Orange, CA, USA) and 8 Mtwo (VDW, Munich, Germany) instruments were evaluated...
February 2017: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/28090669/the-association-between-sclerostin-and-incident-type-2-diabetes-risk-a-cohort-study
#4
Oriana Hoi Yun Yu, Brent Richards, Claudie Berger, Robert G Josse, William D Leslie, David Goltzman, Stephanie M Kaiser, Christopher S Kovacs, K Shawn Davison
OBJECTIVE: To determine whether sclerostin is associated with fasting glucose, insulin levels, insulin resistance or increased risk of incident type 2 diabetes. BACKGROUND: Type 2 diabetic patients have a higher risk of fractures. Recent studies suggest sclerostin, a regulator of osteoblast activity, is associated with diabetes. MATERIALS AND METHODS: Sclerostin levels were obtained from 1,778 individuals with no history of type 2 diabetes participating in the population-based Canadian Multicentre Osteoporosis Study (CaMos) cohort...
January 15, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/28090655/30-second-bound-and-pore-water-concentration-mapping-of-cortical-bone-using-2d-ute-with-optimized-half-pulses
#5
Mary Kate Manhard, Kevin D Harkins, Daniel F Gochberg, Jeffry S Nyman, Mark D Does
PURPOSE: MRI of cortical bone has the potential to offer new information about fracture risk. Current methods are typically performed with 3D acquisitions, which suffer from long scan times and are generally limited to extremities. This work proposes using 2D UTE with half pulses for quantitatively mapping bound and pore water in cortical bone. METHODS: Half-pulse 2D UTE methods were implemented on a 3T Philips Achieva scanner using an optimized slice-select gradient waveform, with preparation pulses to selectively image bound or pore water...
January 16, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28090452/classifying-thoracolumbar-fractures-role-of-quantitative-imaging
#6
REVIEW
Fernando Ruiz Santiago, Pablo Tomás Muñoz, Elena Moya Sánchez, Marta Revelles Paniza, Alberto Martínez Martínez, Antonio Luis Pérez Abela
This article describes different types of vertebral fractures that affect the thoracolumbar spine and the most relevant contributions of the different classification systems to vertebral fracture management. The vertebral fractures types are based on the three columns model of Denis that includes compression, burst, flexion-distraction and fracture-dislocation types. The most recent classifications systems of these types of fractures are reviewed, including the Thoracolumbar Injury Classification and Severity score (TLICS) and the Arbeitsgemeinschaft für Osteosynthesefragen Spine Thoracolumbar Injury Classification and Severity score (AOSpine-TLICS)...
December 2016: Quantitative Imaging in Medicine and Surgery
https://www.readbyqxmd.com/read/28090446/quantitative-imaging-methods-in-osteoporosis
#7
REVIEW
Ling Oei, Fjorda Koromani, Fernando Rivadeneira, M Carola Zillikens, Edwin H G Oei
Osteoporosis is characterized by a decreased bone mass and quality resulting in an increased fracture risk. Quantitative imaging methods are critical in the diagnosis and follow-up of treatment effects in osteoporosis. Prior radiographic vertebral fractures and bone mineral density (BMD) as a quantitative parameter derived from dual-energy X-ray absorptiometry (DXA) are among the strongest known predictors of future osteoporotic fractures. Therefore, current clinical decision making relies heavily on accurate assessment of these imaging features...
December 2016: Quantitative Imaging in Medicine and Surgery
https://www.readbyqxmd.com/read/28090442/can-mri-accurately-detect-pilon-articular-malreduction-a-quantitative-comparison-between-ct-and-3t-mri-bone-models
#8
Shairah Radzi, Constantin Edmond Dlaska, Gary Cowin, Mark Robinson, Jit Pratap, Michael Andreas Schuetz, Sanjay Mishra, Beat Schmutz
BACKGROUND: Pilon fracture reduction is a challenging surgery. Radiographs are commonly used to assess the quality of reduction, but are limited in revealing the remaining bone incongruities. The study aimed to develop a method in quantifying articular malreductions using 3D computed tomography (CT) and magnetic resonance imaging (MRI) models. METHODS: CT and MRI data were acquired using three pairs of human cadaveric ankle specimens. Common tibial pilon fractures were simulated by performing osteotomies to the ankle specimens...
December 2016: Quantitative Imaging in Medicine and Surgery
https://www.readbyqxmd.com/read/28090003/primary-hinged-external-fixation-of-terrible-triad-injuries-and-olecranon-fracture-dislocations-of-the-elbow
#9
Kensuke Sakai, Masahiro Shirahama, Naoto Shiba, Kenji Yoshida, Shiro Yoshida
This study aimed to introduce a new treatment that apples primary hinged external fixation for complex fracture-dislocations of the elbow in 12 cases. We retrospectively assessed the functional outcomes of eight patients with terrible triad injuries and three patients with an olecranon fracture-dislocation of the elbow, who were treated at our hospital using a primary hinged external fixator between June 2012 and December 2014. Ten patients underwent repair or replacement of the radial head, while three underwent repair of the olecranon...
January 16, 2017: Kurume Medical Journal
https://www.readbyqxmd.com/read/28089982/fragility-fractures-are-associated-with-an-increased-risk-for-cardiovascular-events-in-women-and-men-with-rheumatoid-arthritis-a-population-based-study
#10
Orla Ni Mhuircheartaigh, Cynthia S Crowson, Sherine E Gabriel, Veronique L Roger, L Joseph Melton, Shreyasee Amin
OBJECTIVE: Women and men with rheumatoid arthritis (RA) have an increased risk for fragility fractures and cardiovascular disease (CVD), each of which has been reported to contribute to excess morbidity and mortality in these patients. Fragility fractures share similar risk factors for CVD but may occur at relatively younger ages in patients with RA. We aimed to determine whether a fragility fracture predicts the development of CVD in women and men with RA. METHODS: We studied a population-based cohort with incident RA from 1955 to 2007 and compared it with age- and sex-matched non-RA subjects...
January 15, 2017: Journal of Rheumatology
https://www.readbyqxmd.com/read/28089837/direct-midline-posterior-corpectomy-and-fusion-of-a-lumbar-burst-fracture-with-retrospondyloptosis-a-case-report
#11
Arthur Carminucci, Rachid Assina, R Nick Hernandez, Ira M Goldstein
BACKGROUND: Traumatic burst fractures of the lumbar spine can result in significant neurological injury and mechanical instability. The ideal surgical approach for the treatment of unstable lumbar spine burst fractures remains debatable. CASE DESCRIPTION: A 37 year-old male presented with severe neurological injury including loss of motor function below the level of the iliopsoas muscles bilaterally, saddle anesthesia, and absent rectal tone, following a fall from 60 ft...
January 9, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28089798/a-meta-analysis-of-external-fixation-versus-open-reduction-and-internal-fixation-for-complex-tibial-plateau-fractures
#12
REVIEW
Xing-Wen Zhao, Jian-Xiong Ma, Xin-Long Ma, Xuan Jiang, Yin Wang, Fei Li, Bin Lu
PURPOSE: Both external fixation(ExFx) and open reduction and internal fixation(ORIF) were used to treat complex tibial plateau fractures, but it was not sure which one was better. So we did this meta-analysis to evaluate the outcomes of ExFx and ORIF in managing complex tibial plateau fractures. METHODS: Articles published before August 5, 2016 were selected from PubMed, Cochrane library, and some other electronic database. Relevant journals were also searched manually with no language limited...
January 12, 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/28089796/correlationbetweenobesity-and-severity-of-distal-radius-fractures
#13
Carlos Acosta-Olivo, Juan C Gonzalez-Saldivar, Gregorio Villarreal-Villarreal, Alejandro Torres-Botello, Eduardo Gomez-Garcia, Yadira Tamez-Mata, Victor Peña-Martinez
INTRODUCTION: The incidence of obesity has increased significantly worldwide. Our hypothesis was that patients with obesity have a more severe distal radius fracture andwe realized a study to evaluate this correlation between obesity and severity of distal radius fractures caused by low-energy injuries. MATERIALS AND METHODS: A total of 114 patients with distal radius fracture were examined in a cross-sectional, observational study. Fractures were classified according to the international AO-Müller/Orthopedic Trauma Association (AO/OTA) classification in order to determine the severity...
January 9, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28089667/periprosthetic-fractures-of-the-distal-femur-after-total-knee-arthroplasty-plate-versus-nail-fixation
#14
REVIEW
Sara Shippee Wallace, Daniel Bechtold, Adam Sassoon
: The incidence of periprosthetic fractures about a TKA is increasing. Traditionally these fractures are classified by their location and prosthesis integrity. In the setting of a supracondyar fracture about a well-fixed prosthesis, both plate and nail fixation of the fracture present themselves as options, each with unique benefits and pitfalls. Through review and discussion of the literature, we aim to describe some of the patient, fracture, and implant related factors that should be considered when planning fixation of periprosthetic fractures about a TKA...
January 12, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28089595/percutaneous-plating-of-weber%C3%A2-b-fibular-fractures
#15
Amol Saxena, Andrew Yun
The purpose of the present study was to describe a minimally invasive percutaneous technique for plating Weber B distal fibular fractures and to evaluate its efficacy by measuring patient outcomes and hardware removal rates. The data from 17 patients undergoing percutaneous plating of a distal fibular (Weber B) fracture were prospectively studied. A 4- to 6-hole semitubular plate with 3 screws was used for percutaneously plating. The Roles and Maudsley score was used to assess the patients' activity level...
January 12, 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/28089508/a-reply-to-douze-and-delagnes-s-the-pattern-of-emergence-of-a-middle-stone-age-tradition-at-gademotta-and-kulluletti-ethiopia-through-convergent-tool-and-point-technologies-j-hum-evol-91-2016-93-121
#16
Yonatan Sahle, David R Braun
Douze and Delagnes (2016) revisit Middle Stone Age (MSA) lithic assemblages from the Gademotta Formation (Fm.), Ethiopia. Their analysis of selected assemblages from three of the 1972 excavations expands the original typo-technological interpretations by Wendorf and Schild (1974). We particularly welcome their evaluation of our recent inferences about the function of pointed artifacts and technological patterns in the Gademotta Fm. (Sahle et al., 2013, 2014). However, we find several arguments and conclusions in Douze and Delagnes (2016) to be rather unconvincing and irreconcilable with results from analyses of whole assemblages (Wendorf and Schild, 1974; Sahle et al...
January 12, 2017: Journal of Human Evolution
https://www.readbyqxmd.com/read/28089470/conversion-hip-arthroplasty-in-failed-fixation-of-intertrochanteric-fracture-a-propensity-score-matching-study
#17
Young-Kyun Lee, Jung Taek Kim, Awad Abdalla Alkitaini, Ki-Choul Kim, Yong-Chan Ha, Kyung-Hoi Koo
BACKGROUND: Conversion hip arthroplasty is a salvage procedure for failed internal fixation of intertrochanteric fractures. However, the technical difficulties and perioperative morbidity of conversion arthroplasty are uncertain. METHODS: We compared the type of arthroplasty (total hip arthroplasty or hemiarthroplasty), operative parameters, perioperative morbidity, 1-year mortality, implant stability, and clinical results of 33 conversion hip arthroplasties due to a failed internal fixation of intertrochanteric fracture with those of a matched control group of 33 primary hip arthroplasties due to the same fracture...
December 22, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28089422/low-magnitude-mechanical-signals-and-the-spine-a-review-of-current-and-future-applications
#18
REVIEW
Martin H Pham, Zorica Buser, Jeffrey C Wang, Frank L Acosta
Animal and human studies demonstrate the anabolic properties of low-magnitude mechanical stimulation (LMMS) in its ability to improve bone formation by enhancing the proliferation of mesenchymal stem cells and their subsequent commitment down an osteoblastic lineage. Response to mechanical strains as low as 10μɛ have been seen, illustrating the sensitivity of mechanosensory cells to mechanotransduction pathways. Applications to the spine include treatment of osteoporosis in preparation for instrumented fusion, fracture reduction in spinal cord injury patients to slow bone mineral density loss, and bone tissue engineering and enhancement of bone-implant osseointegration for pseudarthrosis and hardware failure...
January 12, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28089404/the-schhs-hip-fracture-clinical-network-experience-improving-care-and-outcomes-through-an-interprofessional-approach
#19
Gillian Puckeridge, Morné Terblanche, Debbie Massey
BACKGROUND: Hip fractures are a major global health care issue, with the 1.26 million estimated cases in 1990 predicted to increase to 4.5 million by 2050. Varying models of care have been developed to improve outcomes following fragility hip fractures. Most of these care models embrace an interprofessional approach to care. Specialist orthopedic nurses play an important role in the management of fragility hip fracture patients and their contribution to the interprofessional health care team is an important predictor of patient outcomes...
December 18, 2016: International Journal of Orthopaedic and Trauma Nursing
https://www.readbyqxmd.com/read/28089394/grinding-damage-assessment-for-cad-cam-restorative-materials
#20
Philippe Curran, Maria Cattani-Lorente, H W Anselm Wiskott, Stéphane Durual, Susanne S Scherrer
OBJECTIVES: To assess surface/subsurface damage after grinding with diamond discs on five CAD-CAM restorative materials and to estimate potential losses in strength based on crack size measurements of the generated damage. METHODS: The materials tested were: Lithium disilicate (LIT) glass-ceramic (e.max CAD), leucite glass-ceramic (LEU) (Empress CAD), feldspar ceramic (VM2) (Vita Mark II), feldspar ceramic-resin infiltrated (EN) (Enamic) and a composite reinforced with nano ceramics (LU) (Lava Ultimate)...
January 12, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
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