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Stress radiography

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https://www.readbyqxmd.com/read/29341175/investigation-of-the-axial-gap-clearance-in-a-hydrodynamic-passive-magnetically-levitated-rotary-blood-pump-using-x-ray-radiography
#1
Bente Thamsen, Mathieu Plamondon, Marcus Granegger, Marianne Schmid Daners, Rolf Kaufmann, Antonia Neels, Mirko Meboldt
The HeartWare HVAD is a radial rotary blood pump with a combination of passive magnetic and hydrodynamic bearings to levitate the impeller. The axial gap size between impeller and housing in this bearing and its sensitivity to speed, flow, and pressure difference is difficult to assess. Shear stresses are exceptionally high in this tiny gap making it important for blood damage and related adverse events. Therefore, the aim of this study was to measure the axial gap clearance in the HVAD at different operating conditions employing radiography...
January 17, 2018: Artificial Organs
https://www.readbyqxmd.com/read/29322208/the-association-of-the-medial-joint-vacuum-phenomenon-with-ulnar-collateral-ligament-injury-in-symptomatic-elbows-of-younger-athletes
#2
Ryan Tai, Tyson Bolinske, Varand Ghazikhanian, Jacob C Mandell
OBJECTIVE: To determine the prevalence of intra-articular gas (IAG) on elbow radiography and evaluate variables, including IAG, as predictors of UCL injury. MATERIALS AND METHODS: This IRB-approved retrospective study consisted of 241 consecutive elbow radiographic studies containing AP radiographs with valgus stress of both symptomatic and asymptomatic sides in 234 patients. The IAG, medial joint space (MJS), and MJS difference between the symptomatic and asymptomatic elbow (MJSD) were evaluated by two readers, as well as patient age, gender, sport played, and handedness...
January 10, 2018: Skeletal Radiology
https://www.readbyqxmd.com/read/29312872/weight-bearing-cone-beam-ct-scan-versus-gravity-stress-radiography-for-analysis-of-supination-external-rotation-injuries-of-the-ankle
#3
John M Marzo, Melissa A Kluczynski, Corey Clyde, Mark J Anders, Christopher E Mutty, Christopher A Ritter
For AO 44-B2 ankle fractures of uncertain stability, the current diagnostic standard is to obtain a gravity stress radiograph, but some have advocated for the use of weight-bearing radiographs. The primary aim was to compare measures of medial clear space (MCS) on weight-bearing cone beam computed tomography (CBCT) scans versus gravity stress radiographs for determining the state of stability of ankle fractures classified as AO SER 44-B2 or Weber B. The secondary aim was to evaluate the details offered by CBCT scans with respect to other findings that may be relevant to patient care...
December 2017: Quantitative Imaging in Medicine and Surgery
https://www.readbyqxmd.com/read/29238646/stem-cells-in-spinal-fusion
#4
Michael A Robbins, Dominik R Haudenschild, Adam M Wegner, Eric O Klineberg
Study Design: Review of literature. Objectives: This review of literature investigates the application of mesenchymal stem cells (MSCs) in spinal fusion, highlights potential uses in the development of bone grafts, and discusses limitations based on both preclinical and clinical models. Methods: A review of literature was conducted looking at current studies using stem cells for augmentation of spinal fusion in both animal and human models...
December 2017: Global Spine Journal
https://www.readbyqxmd.com/read/29131866/association-between-mental-health-status-and-bone-mineral-density-analysis-of-the-2008-2010-korea-national-health-and-nutrition-examination-survey
#5
Changtae Hahn, Ji Hoon Oh, Soo-Hyun Joo, Jo-Eun Jeong, Jeong-Ho Chae, Chang-Uk Lee, Tae-Suk Kim
The current study aimed to investigate the association between mental health status and bone mineral density (BMD) using data from the Korean National Health and Nutrition Examination Survey (KNHANES) 2008-2010. We enrolled 15,876 South Korean participants (4,010 postmenopausal females, 4,836 premenopausal females, and 7,016 males, all aged 20 years or older). BMD was measured using dual-energy radiography absorptiometry at the femoral neck (NK), lumbar spine (LSP), and total femur (TFM). Mental health status data were obtained from a self-report questionnaire that assessed psychological stress, depressed mood, and suicidal ideation...
2017: PloS One
https://www.readbyqxmd.com/read/29063384/peroxiredoxin-i-expression-in-epithelial-cells-of-buccal-mucosa-from-patients-exposed-to-panoramic-x-rays-influence-of-the-age
#6
Milena B Silva, Ana P D Demasi, Elizabeth F Martinez, Maristane L Goudinho, Joarlene M Soares, José L C Junqueira, Ney S Araujo
OBJECTIVES: The aim of this study was to evaluate peroxiredoxin I (Prx I) participation in the cellular antioxidant response to low-dose X-rays through the analysis of its expression in buccal mucosa cells from patients of different ages following panoramic dental radiography. MATERIALS AND METHODS: Of the 50 patients included in this study, oral mucosa cells from six adults were collected for the immunofluorescence cytological analysis. The other 44 patients, 11 patients aged below 20 years; 22 patients aged between 20 and 50 years; and 11 patients aged above 50 years, were submitted to panoramic dental radiography, and oral mucosa cells were collected for the gene expression analysis before and 1 hour after exposure...
October 23, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28932699/imaging-of-shoulder-instability
#7
REVIEW
Fernando Ruiz Santiago, Alberto Martínez Martínez, Pablo Tomás Muñoz, José Pozo Sánchez, Antonio Zarza Pérez
This extended review tries to cover the imaging findings of the wide range of shoulder injuries secondary to shoulder joint instability. Usefulness of the different imaging methods is stressed, including radiography, computed tomography (CT) and magnetic resonance. The main topics to be covered include traumatic, atraumatic and minor instability syndromes. Radiography may show bone abnormalities associated to instability, including developmental and post-traumatic changes. CT is the best technique depicting and quantifying skeletal changes...
August 2017: Quantitative Imaging in Medicine and Surgery
https://www.readbyqxmd.com/read/28780954/continuing-professional-development-cpd-in-radiography-a%C3%A2-collaborative-european-meta-ethnography-literature-review
#8
REVIEW
A Wareing, C Buissink, D Harper, M Gellert Olesen, M Soto, S Braico, P Van Laer, I Gremion, L Rainford
OBJECTIVES: The aim of the study was to complete a collaborative review of Radiography continuing professional development (CPD) research material to support the production of European Federation of Radiographer Societies (EFRS) CPD recommendations. A meta-ethnography approach to literature review was applied focussing upon commonalities rather than discrepancies between research outcomes. This facilitated exploration of context across the geographical region of Europe with national variations in CPD governance...
September 2017: Radiography
https://www.readbyqxmd.com/read/28644080/determination-of-gastrointestinal-transit-times-in-barred-owls-strix-varia-by-contrast-fluoroscopy
#9
Grayson A Doss, Jackie M Williams, Christoph Mans
Contrast imaging studies are routinely performed in avian patients when an underlying abnormality of the gastrointestinal (GI) tract is suspected. Fluoroscopy offers several advantages over traditional radiography and can be performed in conscious animals with minimal stress and restraint. Although birds of prey are commonly encountered as patients, little is known about GI transit times and contrast imaging studies in these species, especially owls. Owls are commonly encountered in zoological, educational, and wildlife settings...
June 2017: Journal of Avian Medicine and Surgery
https://www.readbyqxmd.com/read/28632662/treatment-of-incomplete-jones-fractures-with-low-intensity-pulsed-ultrasound-lipus
#10
Tateishi Tomohiko, Tsuyoshi Nagase, Teruhiko Nakagawa, Tsuchiya Masamitsu
OBJECTIVE: Stress fractures of the proximal epiphysis of the fifth metatarsal bone (termed Jones fracture) frequently occur in both senior high-school-age and older contestant-level soccer players, and its incidence in Japanese soccer players is higher than that in European players. Surgery is most commonly indicated for a complete fracture, and about 3 months are required before the patient is able to return to the sport. We have performed a "Jones fracture screening" to reduce the incidence of these fractures...
July 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28603855/stress-fractures-of-the-calcaneus-diagnosed-by-sonography-report-of-8-cases
#11
Stefano Bianchi, Dien Hung Luong
We present a retrospective review of 8 patients (6 women and 2 men, with an age range of 46-80 years; mean age, 60.2 years) in whom sonography was used to diagnose a calcaneal stress fracture. Sonography was performed because of a clinical suspicion of soft tissue injuries. Two patients were first assessed by standard radiography; for the remaining patients, sonography was the first imaging technique used. Patients were subsequently examined by magnetic resonance imaging, except for 1 patient in whom the diagnosis was made only on a clinical-sonographic correlation...
June 12, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28552041/magnetic-resonance-imaging-and-stress-radiography-in-chronic-lateral-ankle-instability
#12
Hong-Geun Jung, Na-Ra Kim, Tae-Hoon Kim, Joon-Sang Eom, Dong-Oh Lee
BACKGROUND: Studies regarding magnetic resonance imaging (MRI) findings of the lateral ankle ligaments in chronic lateral ankle instability and their clinical relevance for surgery are lacking. This study classified the lateral ankle ligament MRI findings of the anterior talofibular ligament (ATFL) and calcaneofibular ligament (CFL) in chronic lateral ankle instability (CLAI) and correlated these findings with ankle stress radiographs. METHODS: We included 132 ankles with CLAI that underwent ligament reconstructions from 2006 to 2013...
June 2017: Foot & Ankle International
https://www.readbyqxmd.com/read/28473086/acr-appropriateness-criteria%C3%A2-stress-fatigue-insufficiency-fracture-including-sacrum-%C3%A2-excluding-other-vertebrae
#13
Jenny T Bencardino, Taylor J Stone, Catherine C Roberts, Marc Appel, Steven J Baccei, R Carter Cassidy, Eric Y Chang, Michael G Fox, Bennett S Greenspan, Soterios Gyftopoulos, Mary G Hochman, Jon A Jacobson, Douglas N Mintz, Gary W Mlady, Joel S Newman, Zehava S Rosenberg, Nehal A Shah, Kirstin M Small, Barbara N Weissman
Stress fractures, including both fatigue and insufficiency types, are frequently encountered in clinical practice as a source of pain in both athletes and patients with predisposing conditions. Radiography is the imaging modality of choice for baseline diagnosis. MRI has greatly improved our ability to diagnose radiographically occult stress fractures. Tc-99m bone scan and CT may also be useful as diagnostic tools. Although fatigue and insufficiency fractures can be self-limited and go onto healing even without diagnosis, there is usually value in initiating prompt therapeutic measures as incomplete stress fractures have the potential of progressing to completion and requiring more invasive treatment or delay in return to activity...
May 2017: Journal of the American College of Radiology: JACR
https://www.readbyqxmd.com/read/28469488/ultrasound-diagnosed-tibia-stress-fracture-a-case-report
#14
Adae Amoako, Ayesha Abid, Anthony Shadiack, Robert Monaco
Stress fractures are a frequent cause of lower extremity pain in athletes, and especially in runners. Plain imaging has a low sensitivity. Magnetic resonance imaging (MRI) or bone scan scintigraphy is the criterion standard, but expensive. We present the case of a young female distance runner with left shin pain. Plain radiography was unremarkable. Ultrasound showed focal hyperechoic elevation of the periosteum with irregularity over the distal tibia and increased flow on Doppler. These findings were consistent with a distal tibia stress fracture and confirmed by MRI...
2017: Clinical Medicine Insights. Arthritis and Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28419804/simultaneous-reconstruction-of-the-medial-and-lateral-collateral-ligaments-for-chronic-combined-ligament-injuries-of-the-ankle
#15
Toshito Yasuda, Hiroaki Shima, Katsunori Mori, Seiya Tsujinaka, Masashi Neo
BACKGROUND: Objective data on chronic injuries of the medial collateral ligament (MCL) of the ankle are scarce. Chronic MCL injuries are frequently associated with lateral collateral ligament (LCL) injuries. For patients with chronic combined MCL and LCL injuries, the authors have performed simultaneous surgery of the 2 ligaments. HYPOTHESIS: Simultaneous surgery of the 2 ligaments may be effectively used to treat chronic combined MCL and LCL injuries. STUDY DESIGN: Case series; Level of evidence, 4...
April 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28418814/ionizing-radiation-exposure-during-pregnancy-effects-on-postnatal-development-and-life
#16
REVIEW
Shayenthiran Sreetharan, Christopher Thome, Sujeenthar Tharmalingam, Devon E Jones, Adomas V Kulesza, Neelam Khaper, Simon J Lees, Joanna Y Wilson, Douglas R Boreham, T C Tai
Reliable human data on the effects of prenatal exposure to ionizing radiation are largely based on high-dose exposures. Exposure to low doses may produce effects that are not easily observable at birth, and may persist over the course of the offspring's postnatal life. This is important when considering fetal programing, a phenomenon characterized by changes in offspring phenotype due to a stress experienced in utero. In this review, we briefly summarize the known effects of both high- and low-dose exposure to ionizing radiation during pregnancy in humans...
June 2017: Radiation Research
https://www.readbyqxmd.com/read/28388886/allograft-tendon-reconstruction-of-the-anterior-talofibular-ligament-and-calcaneofibular-ligament-in-the-treatment-of-chronic-ankle-instability
#17
Weikai Wang, Guo Hong Xu
BACKGROUND: The purpose was retrospectively to investigate functional and clinical outcomes after anterior talofibular ligament (ATFL) and calcaneofibular ligament (CFL) reconstruction using a single allograft. METHODS: Patients with severe chronic lateral instability of the ankle underwent surgery after conservative treatment failed. Ultrasounds of the ankle were performed, and if the AFTL and CFL were completely torn without enough soft tissue for repair, the ligaments were reconstructed using allograft tendon...
April 8, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28349205/prevalence-and-clinical-features-of-sports-related-lumbosacral-stress-injuries-in-the-young
#18
Hideto Kaneko, Mototsune Murakami, Kazuya Nishizawa
BACKGROUND: Stress injuries (stress fractures and stress reactions) of the lumbosacral region are one of the causes of sports-related lower back pain in young individuals. These injuries can be detected by bone marrow edema lesion on MRI. However, little is known about the prevalence and clinical features of early stage lumbosacral stress injuries. This study aimed to evaluate the epidemiology of lumbosacral stress injuries. METHODS: A total of 312 patients (under 18 years of age) who complained of sports-related lower back pain that had lasted for ≥7 days underwent magnetic resonance imaging (MRI) scans...
May 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28348888/the-influence-of-oblique-angle-forced-exercise-in-surgically-destabilized-stifle-joints-is-synergistic-with-bone-but-antagonistic-with-cartilage-in-an-ovine-model-of-osteoarthritis
#19
Rachel J Hill, Holly M Mason, Gavin Yeip, Samer S Merchant, Aaron L Olsen, Rusty D Stott, Arnaud J Van Wettere, Eadric Bressel, Jeffrey B Mason
Large animal models of osteoarthritis are a necessary testing ground for FDA approval of human medicine applications. Sheep models have advantages over other available large animals, but development and progression of osteoarthritis in sheep is exceedingly slow, which handicaps progress in development of potential treatments. We combined oblique angle forced exercise to increase stress on the stifle, with surgical destabilization to hasten the development of osteoarthritis in ewes. Methods for early detection of clinical signs included radiography, urine, and serum biomarker assays and gait analysis and ex vivo we used microcomputed tomography and macroscopic joint analysis...
2017: Arthritis
https://www.readbyqxmd.com/read/28321570/comparative-analysis-of-locking-plate-versus-hook-plate-osteosynthesis-of-neer-type-iib-lateral-clavicle-fractures
#20
Benjamin Erdle, Kaywan Izadpanah, Martin Jaeger, Patrizia Jensen, Lukas Konstantinidis, Jörn Zwingmann, Norbert P Südkamp, Dirk Maier
INTRODUCTION: Controversy exists on optimal operative treatment of vertically unstable Neer IIB lateral clavicle fractures. Aim of this study was to analyse and compare clinical and radiological results and complications of locking plate osteosynthesis (LPO) versus hook plate osteosynthesis (HPO) with acromioclavicular joint (ACJ) stabilization. The hypothesis was, that HPO would recreate coracoclavicular stability more effectively and potentially lead to a superior outcome. METHODS: This retrospective, observational cohort study included 32 patients (19 HPO, 13 LPO) with a mean age of 44...
May 2017: Archives of Orthopaedic and Trauma Surgery
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