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Stress radiography

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https://www.readbyqxmd.com/read/29761221/interest-of-short-implants-in-hip-arthroplasty-for-osteonecrosis-of-the-femoral-head-comparative-study-uncemented-short-vs-cemented-conventional-femoral-stems
#1
Mehdi Miladi, Benoît Villain, Nasser Mebtouche, Thierry Bégué, Jean-Charles Aurégan
PURPOSES: Osteonecrosis of the femoral head (ONFH) is a dramatic condition resulting in joint destruction in the late stages. Total hip arthroplasty allows function recovery with satisfactory implant survival. Recently, the use of uncemented short stems has been suggested to improve the conservation of bone stock. METHODS: We performed a retrospective study on 16 hip arthroplasties-11 patients-implanted for ONFH between 2008 and 2017. We aimed to compare the outcomes of the two types of arthroplasty-"uncemented short" vs "cemented conventional" femoral stem-in terms of pain (visual analogue scale), function (Harris Hip Score), and survival (radiography)...
May 15, 2018: International Orthopaedics
https://www.readbyqxmd.com/read/29728833/ftfa-change-under-valgus-stress-force-radiography-is-useful-for-evaluating-the-correctability-of-intra-articular-varus-deformity-in-uka
#2
Qidong Zhang, Juan Yue, Weiguo Wang, Yan Chen, Qichao Zhao, Wanshou Guo
OBJECTIVE: The aim of this observational study was to investigate the postoperative alignment change with Oxford unicompartmental knee arthroplasties (UKA), and clarify whether femoro-tibial facet angle (FTFA) is useful for evaluating alignment correctability with UKA. METHODS: This study evaluated 79 knees consecutive minimally invasive Oxford phase 3 UKAs performed between 2013 and 2014. Full-length weight-bearing radiographs of the lower limbs were obtained pre- and postoperatively to assess varus angle...
May 4, 2018: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/29691616/lars-synthetic-ligaments-for-the-acute-management-of-111-acute-knee-dislocations-effective-surgical-treatment-for-most-ligaments
#3
Pierre Ranger, Andréa Senay, Geneviève Rochette Gratton, Marc Lacelle, Josée Delisle
PURPOSE: The purpose of this study was to describe the longitudinal outcomes of acute repair and augmentation for the reconstruction of dislocated knees, using LARS synthetic ligaments. METHODS: Patients with a knee dislocation surgically treated using LARS synthetic ligament augmentation, with a minimum follow-up of 24 months, were enrolled between 1996 and 2014. Range of motion, Lachman, pivot shift, posterior drawer, step off sign, valgus, varus, KT-1000 arthrometer, Telos technique, IKDC, Lysholm, Tegner, and Meyers scores were obtained every 2 years up to 10 years...
April 24, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29678332/gestational-aging-and-determination-of-parturition-date-in-the-bitch-and-queen-using-ultrasonography-and-radiography
#4
REVIEW
Cheryl Lopate
This article provides a complete understanding of how radiography and ultrasound imaging can be used to determine gestational age when inadequate breeding data are available. Formulas for calculation of gestational age using both fetal and extrafetal structures are presented. Ultrasonographic descriptions of organ development and their use in determining gestational age are discussed. This information may be used to monitor the health and development of the fetuses and may be useful when the need to plan an elective or emergency Cesarean section occurs...
April 17, 2018: Veterinary Clinics of North America. Small Animal Practice
https://www.readbyqxmd.com/read/29656976/the-influence-of-postoperative-knee-stability-on-patient-satisfaction-in-cruciate-retaining-total-knee-arthroplasty
#5
Tomoyuki Kamenaga, Hirotsugu Muratsu, Yutaro Kanda, Hidetoshi Miya, Ryosuke Kuroda, Tomoyuki Matsumoto
BACKGROUND: Although knee stability is well known as an important element for the success of total knee arthroplasty (TKA), the direct relationship between clinical outcomes and knee stability is still unknown. The purpose of this study was to determine if postoperative knee stability and soft-tissue balance affect the functional outcomes and patient satisfaction after cruciate-retaining (CR) TKA. METHODS: Fifty-five patients with varus osteoarthritis of the knee who underwent CR TKA were included in this study, and their postoperative knee stability was assessed by stress radiography at extension and flexion 1 month postoperatively...
March 16, 2018: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29607767/femoral-neck-stress-fracture-in-a-female-runner
#6
Meghan A Lamothe, James M Elliott, Alison H Chang
A 23-year-old woman was referred to physical therapy by her primary care physician for a 4-week history of right groin pain that had progressively worsened while training for a half-marathon. Before the physical therapy referral, the primary care physician ordered radiography of the right hip, which was unremarkable for fracture. Following examination, the physical therapist suspected osseous or soft tissue abnormality and requested that the primary care physician order magnetic resonance imaging without contrast, which revealed a femoral neck stress fracture...
April 2018: Journal of Orthopaedic and Sports Physical Therapy
https://www.readbyqxmd.com/read/29594157/use-of-nasotracheal-intubation-during-general-anesthesia-in-two-ponies-with-tracheal-collapse
#7
Keila K Ida, Aurélie Sauvage, Alexandra Gougnard, Magda Grauwels, Didier Serteyn, Charlotte Sandersen
Ponies with tracheal collapse may have an increased anesthetic risk due to airway obstruction during induction and recovery. To our knowledge, there are no anesthetic descriptions of these patients, despite a reported 5.6% incidence and 77% mortality rate. Two Shetland ponies with tracheal collapse, a 12-year-old male (pony 1) and a 27-year-old female (pony 2), were referred for right eye enucleation due to a perforating corneal ulcer and severe recurrent uveitis, respectively. Pony 1 was stressed, had lung stridor and hyperthermia, and developed inspiratory dyspnea with handling...
2018: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/29570111/association-between-aortic-knob-width-and-invasively-measured-aortic-pulse-pressure
#8
Won Kyeong Jeon, Myung-A Kim, Hack-Lyoung Kim, You Jeong Ki, Tae-Min Rhee, Woo-Hyun Lim, Jae-Bin Seo, Sang-Hyun Kim, Joo-Hee Zo
BACKGROUND: Aortic knob width (AKW), which can be measured easily in simple radiography, is associated with the degree of dilatation and tortuosity of the aortic arch. Pulsatile stress influences aortic geometry. This study was carried out to investigate whether AKW can represent invasively measured aortic pulse pressure (APP). METHODS: A total of 252 patients who underwent invasive coronary angiography (ICA) for the evaluation of coronary artery disease were enrolled...
March 21, 2018: Blood Pressure Monitoring
https://www.readbyqxmd.com/read/29560445/validation-of-finite-element-simulations-with-synchrotron-radiography-a-descriptive-study-of-micromechanics-in-two-piece-dental-implants
#9
Wolfram Wiest, Alexander Rack, Simon Zabler, Alex Schaer, Michael Swain, Katja Nelson
State-of-the art, two-piece dental implants made from titanium alloys exhibit a complex micromechanical behavior under dynamical load. Its understanding, especially the formation of microgaps, is of crucial importance in order to predict and improve the long-term performance of such implants. Microgap formation in a loaded dental implant with a conical implant-abutment connection can be studied and quantified by synchrotron radiography with micrometer accuracy. Due to the high costs and limited access to synchrotron radiation sources, alternative approaches are needed in order to depict the microgap formation...
February 2018: Heliyon
https://www.readbyqxmd.com/read/29480758/sports-injuries-at-the-rio-de-janeiro-2016-summer-olympics-use-of-diagnostic-imaging-services
#10
Ali Guermazi, Daichi Hayashi, Mohamed Jarraya, Michel D Crema, Roald Bahr, Frank W Roemer, João Grangeiro, Richard G Budgett, Torbjorn Soligard, Romulo Domingues, Abdalla Skaf, Lars Engebretsen
Purpose To describe the occurrence of imaging-depicted sports-related stress injuries, fractures, and muscle and tendon disorders during the 2016 Summer Olympic Games in Rio de Janeiro, Brazil. Materials and Methods Data on radiologic examinations were collected and retrospectively analyzed centrally by two board-certified musculoskeletal radiologists (with a third musculoskeletal radiologist acting as an adjudicator in case of discrepancies). Descriptive data on all imaging examinations by using radiography, ultrasonography (US), and magnetic resonance (MR) imaging were collected and analyzed according to imaging modality, country of origin of the athletes, type of sport, and type and location of injury...
February 26, 2018: Radiology
https://www.readbyqxmd.com/read/29444576/-fractures-of-the-fifth-metatarsal-base
#11
K Bušková, D Kuběnová, M Tuček
Fractures of the fifth metatarsal base are among the most common fractures of the foot. They are typically caused by indirect violence during sports activities. This region is also a site where stress fractures occur frequently. Diagnosis is based on the patients medical history, clinical examination and imaging methods. The fundamental imaging method is radiography of the foot in three views. MRI is used primarily for early diagnosis of stress fractures. CT examination is beneficial mainly in complex foot injuries, in order to rule out associated fractures...
2018: Rozhledy V Chirurgii: Měsíčník Československé Chirurgické Společnosti
https://www.readbyqxmd.com/read/29430489/posterior-cruciate-ligament-current-concepts-review
#12
REVIEW
Santiago Pache, Zachary S Aman, Mitchell Kennedy, Gilberto Yoshinobu Nakama, Gilbert Moatshe, Connor Ziegler, Robert F LaPrade
The posterior cruciate ligament (PCL) is the largest and strongest ligament in the human knee, and the primary posterior stabilizer. Recent anatomy and biomechanical studies have provided an improved understanding of PCL function. PCL injuries are typically combined with other ligamentous, meniscal and chondral injuries. Stress radiography has become an important and validated objective measure in surgical decision making and post-operative assessment. Isolated grade I or II PCL injuries can usually be treated non-operatively...
January 2018: Archives of Bone and Joint Surgery
https://www.readbyqxmd.com/read/29417159/-digital-volume-tomography-dedicated-scanner-and-cone-beam-ct-with-c%C3%A2-arm-systems
#13
REVIEW
M Fiebich, D Weber
CLINICAL/METHODICAL ISSUE: Digital volume tomography (DVT) and cone-beam computed tomography (CT) with C‑arm systems have become established three-dimensional imaging systems as an alternative to CT in some application areas. STANDARD RADIOLOGICAL METHODS: The technology of the systems is well developed so that they have become a competing method to CT imaging in terms of image quality and radiation exposure. PERFORMANCE: An advantage is the better spatial resolution, preferably with dedicated scanner systems, especially in the z direction...
March 2018: Der Radiologe
https://www.readbyqxmd.com/read/29409195/anterolateral-talar-palpation-a-complementary-test-for-ankle-instability
#14
João Ellera Gomes, Arthur F Soares, Carlos E Bastiani, Jacqueline Vieira de Castro
BACKGROUND: The anterior drawer test is traditionally used to assess ankle instability, but we believe that there is room for a small but effective improvement by adding digital palpation of the talus. We aimed to determine the accuracy of anterolateral talar palpation (ATP) in the diagnosis of ankle instability by comparing it with the traditional anterior drawer test. METHODS: Fourteen symptomatic and 10 asymptomatic patients were examined for excessive mobility through comparison of both ankles by two blinded orthopedic surgeons, each one using one of the above-mentioned tests...
June 6, 2017: Foot and Ankle Surgery: Official Journal of the European Society of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29399975/diagnostic-imaging-of-ankle-syndesmosis-injuries-a-general-review
#15
REVIEW
John J Kellett, Gregory A Lovell, David A Eriksen, Matthew J Sampson
Literature on the various techniques for imaging injuries to the ankle syndesmosis to determine the most appropriate imaging modality for diagnosing syndesmosis ligament disruption and instability was reviewed using the following data sources: Pubmed, Google scholar, SportsDiscus, E-journals and PLOSone. Search terms used were: syndesmosis paired with injury, imaging, radiology, X-ray, stress X-ray, arthrography, ultrasound, nuclear medicine scan, CT scan, MRI and arthroscopy. Articles were selected by reading abstracts and the full article if indicated...
April 2018: Journal of Medical Imaging and Radiation Oncology
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
#16
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
#17
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
#18
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
#19
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
#20
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
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