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https://www.readbyqxmd.com/read/28806584/transfer-of-tritium-into-laying-hen-s-meat-and-eggs-at-prolonged-intake-with-atmospheric-air-water-and-grass-meal
#1
Zh А Baigazinov, S N Lukashenko, S S Karatayev, А V Panitski, А S Mamyrbayeva, S А Baigazy, T Ye Kozhakhanov, L F Subbotina
Following a continuous intake of tritium (T) by laying hens' over a 55 day period, an increase of НТО concentration both in eggs and meat was observed over the first 2 weeks for intakes via inhalation and ingestion of water and grass meal. After this time, equilibrium of the T in these products occurred. It was found that when the intake of HTO is from water, air and grass meal, the ratio of its activity concentration in muscular tissue to that in eggs does not exceed 1, 4, and 6 respectively. The ratio of ОBТ concentration to that of НТО in the meat of hens (ОBТ/HTO) when intakes were from water, air and grass meal were 0...
August 11, 2017: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/28789871/factors-associated-with-discrepancies-between-preoperatively-planned-and-postoperative-alignments-in-patients-undergoing-closed-wedge-high-tibial-osteotomy
#2
Seong Hwan Kim, Du-Hyun Ro, Young-Min Lee, Yool Cho, Sahnghoon Lee, Myung-Chul Lee
BACKGROUND: To evaluate the difference between preoperative plan and postoperative alignment after closed-wedge HTO and determine factors associated with difference. METHODS: This retrospective cohort study included 165 cases with closed-wedge HTO. The following radiographic parameters were measured: mechanical tibiofemoral angle (mTFA), mechanical medial proximal tibial angle (MPTA), joint line convergence angle, mediolateral joint width discrepancy, Kellgren-Lawrence (K-L) grade, and discrepancy between the correction angle in tibia and correction angle in mTFA...
August 5, 2017: Knee
https://www.readbyqxmd.com/read/28723758/total-knee-arthroplasty-conversion-after-a-failed-lateral-closing-wedge-high-tibial-osteotomy-with-knee-hyperextension-and-secondary-ankle-degeneration-a-case-report
#3
Chen Yao, Xingquan Xu, Sheng Zhou, Xiaoxiao Song, Dongquan Shi, Qing Jiang
RATIONALE: High tibial osteotomy (HTO) has been used widely for medial compartment knee osteoarthritis to correct the deformity and relieve symptoms, especially in young patients who are willing to maintain the high activity level. However, the change of bone morphology, ligament imbalance, limb malalignment, and other complications may influence the short-term outcomes of HTO. Some cases may even require conversion to TKA shortly after HTO because of the loss of correction or pain due to accelerated osteoarthritis...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28704523/leg-length-change-after-opening-wedge-and-closing-wedge-high-tibial-osteotomy-a-meta-analysis
#4
Jun-Ho Kim, Hyun-Jung Kim, Dae-Hee Lee
BACKGROUND: Theoretical considerations suggest that leg length increases after opening wedge high tibial osteotomy (HTO) and decreases after closing wedge HTO; however, in vivo studies have yielded conflicting results. This meta-analysis therefore assessed changes in leg length after opening wedge and closing wedge HTO. METHODS: All studies comparing pre- and postoperative leg length in patients who underwent opening and/or closing wedge HTO were included. Two reviewers independently recorded data from each study in terms of sample size as well as preoperative and postoperative leg length of open wedge and/or closed wedge HTO groups...
2017: PloS One
https://www.readbyqxmd.com/read/28692936/tritium-forms-discrimination-in-ryegrass-under-constant-tritium-exposure-from-seed-germination-to-seedling-autotrophy
#5
H Renard, D Maro, S Le Dizès, A Escobar-Gutiérrez, C Voiseux, L Solier, D Hébert, M Rozet, C Cossonnet, R Barillot
Uncertainties remain regarding the fate of atmospheric tritium after it has been assimilated in grasslands (ryegrass) in the form of TFWT (Tissue Free Water Tritium) or OBT (Organically Bound Tritium). One such uncertainty relates to the tritium forms discrimination during transfer from TFWT to OBT resulting from photosynthesis (OBTphoto), corresponding to the OBTphoto/TFWT ratio. In this study, the OBT/TFWT ratio is determined by experiments in the laboratory using a ryegrass model and hydroponic cultures, with constant activity of tritium in the form of tritiated water (denoted as HTO) in the "water" compartment (liquid HTO) and "air" compartment (HTO vapour in the air)...
July 6, 2017: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/28689161/atmospheric-tritium-concentrations-under-influence-of-areva-nc-la-hague-reprocessing-plant-france-and-background-levels
#6
O Connan, D Hébert, L Solier, D Maro, G Pellerin, C Voiseux, M Lamotte, P Laguionie
In-air tritium measurements were conducted around the AREVA NC La Hague reprocessing plant, as well as on other sites that are not impacted by the nuclear industry in northwest of France. The results indicate that the dominant tritium form around the AREVA site is HT (86%). HT and HTO levels are lower than 5 and 1 Bq. m(-3) for hourly samples taken in the plume. No tritiated organic molecules (TOM) were detected. 26 measurement campaigns were performed and links were established between near-field (85)Kr, HT and HTO activities...
July 6, 2017: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/28673604/no-change-in-patellar-height-following-open-wedge-high-tibial-osteotomy-using-a-novel-femur-referenced-measurement-method
#7
C Ihle, M Ahrend, L Grünwald, A Ateschrang, U Stöckle, S Schröter
BACKGROUND: Open wedge high tibial osteotomy (HTO) can influence the tibial slope and thereby the landmarks of currently used patellar height indices. The purpose of this retrospective study was to compare and validate a new femur-referenced patella height measurement method to currently used patellar height indices in a cohort of HTO patients. METHODS: Patellar height (Caton-Deschamps, Blackburne-Peel and Insall-Salvati Indices and our newly developed Femoral Patellar Height Index) as well as tibial slope were analysed...
June 30, 2017: Knee
https://www.readbyqxmd.com/read/28656162/evaluation-of-changes-in-the-tibiotalar-joint-after-high-tibial-osteotomy
#8
Seyed Morteza Kazemi, Mohamad Qoreishi, Ehsan Behboudi, Alireza Manafi, Seyed Kamyar Kazemi
BACKGROUND: There are limited studies regarding the effects of high tibial osteotomy (HTO) on other areas of lower extremity. In current study, we investigated the changes of tibiotalar joint following HTO. METHODS: A total of 39 patients with genu varum requiring HTO were enrolled in this before and after study. The genu varus, joint diversion (JDA), lateral distal tibial (LDTA) and lateral distal tibial-ground surface (LDT-GSA) angles were measured before the operation and compared with 6 months after the surgery...
May 2017: Archives of Bone and Joint Surgery
https://www.readbyqxmd.com/read/28642979/-medial-opening-wedge-high-tibial-osteotomy
#9
REVIEW
P Niemeyer, A Stöhr, M Köhne, A Hochrein
OBJECTIVE: Reduction of the load to the medial compartment in patients with medial knee osteoarthritis and varus malalignment. Unloading of the posterolateral complex in varus deformity with complex ligamentous laxity. INDICATIONS: Medial knee osteoarthritis and varus malalignment with largely intact lateral and patellofemoral joint aspect. Complex ligament insufficiency combined with varus deformity. CONTRAINDICATIONS: Substantially impaired range of motion...
August 2017: Operative Orthopädie und Traumatologie
https://www.readbyqxmd.com/read/28633973/patellofemoral-osteoarthritis-progression-and-alignment-changes-after-open-wedge-high-tibial-osteotomy-do-not-affect-clinical-outcomes-at-mid-term-follow-up
#10
Kenichi Goshima, Takeshi Sawaguchi, Kenji Shigemoto, Shintaro Iwai, Akira Nakanishi, Ken Ueoka
PURPOSE: To evaluate the clinical and radiological outcomes of open-wedge high tibial osteotomy (OWHTO) with respect to the patellofemoral joint and to assess whether patellofemoral osteoarthritis (OA) progression and alignment changes after OWHTO affect clinical outcomes. METHODS: Inclusion criteria were consecutive patients who underwent OWHTO from March 2005 to September 2013. Exclusion criteria were loss to follow-up within 2 years and absence of second-look arthroscopy findings at the time of plate removal...
June 17, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28599878/responsiveness-of-the-knee-injury-and-osteoarthritis-outcome-score%C3%A2-koos-and-the-oxford-knee-score-oks-in-japanese-patients%C3%A2-with-high-tibial-osteotomy
#11
Sabine Goldhahn, Ryohei Takeuchi, Norimasa Nakamura, Ryuichi Nakamura, Takeshi Sawaguchi
BACKGROUND: To assess responsiveness of the Japanese Knee Injury and Osteoarthritis Outcome Score (KOOS) and the Oxford Knee Score (OKS) in patients undergoing open-wedge HTO to treat knee osteoarthritis and/or osteonecrosis. METHODS: Patients completed a set of questionnaires before HTO surgery (baseline) and 1 year after surgery. The questionnaires comprised the validated Japanese versions of the KOOS, the OKS, and the SF-36v2 and a visual analogue scale (VAS) for local knee pain and general pain...
June 6, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28577508/change-in-gait-after-high-tibial-osteotomy-a-systematic-review-and-meta-analysis
#12
Seung Hoon Lee, O-Sung Lee, Seow Hui Teo, Yong Seuk Lee
We conducted a meta-analysis to analyze how high tibial osteotomy (HTO) changes gait and focused on the following questions: (1) How does HTO change basic gait variables? (2) How does HTO change the gait variables in the knee joint? Twelve articles were included in the final analysis. A total of 383 knees was evaluated. There were 237 open wedge (OW) and 143 closed wedge (CW) HTOs. There were 4 level II studies and 8 level III studies. All studies included gait analysis and compared pre- and postoperative values...
May 26, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28539700/hydrothermal-oxidation-of-fecal-sludge-experimental-investigations-and-kinetic-modeling
#13
Tobias Hübner, Markus Roth, Frédéric Vogel
Hydrothermal oxidation (HTO) provides an efficient technique to completely destroy wet organic wastes. In this study, HTO was applied to treat fecal sludge at well-defined experimental conditions. Four different kinetic models were adjusted to the obtained data. Among others, a distributed activation energy model (DAEM) was applied. A total of 33 experiments were carried out in an unstirred batch reactor with pressurized air as the oxidant at temperatures of <470 °C, oxygen-to-fuel equivalence ratios between 0 and 1...
November 23, 2016: Industrial & Engineering Chemistry Research
https://www.readbyqxmd.com/read/28494285/effects-of-in-situ-exposure-to-tritiated-natural-environments-a-multi-biomarker-approach-using-the-fathead-minnow-pimephales-promelas
#14
B Gagnaire, C Adam-Guillermin, A Festarini, I Cavalié, C Della-Vedova, C Shultz, S B Kim, H Ikert, C Dubois, S Walsh, F Farrow, D Beaton, E Tan, K Wen, M Stuart
Aquatic ecosystems are chronically exposed to radionuclides as well as other pollutants. Increased concentrations of pollutants in aquatic environments can present a risk to exposed organisms, including fish. The goal of this study was to characterize the effects of tritium, in the context of natural environments, on the health of fathead minnow, Pimephales promelas. Fish were exposed to tritium (activity concentrations ranging from 2 to 23,000Bq/L) and also to various concentrations of several metals to replicate multiple-stressor environments...
December 1, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28431338/the-design-and-fabrication-of-beta-sensor-system-for-in-situ-diffusion-tests-in-mudstone-in-france
#15
Zhenhua Lin, Olivier Tillement, Marie-Genevieve Blanchin, Vivek Jindal, Agnès Vinsot, Romain V H Dagnelie, Virginie Blin, Yanick Lettry, Benoit Hautefeuille
Long term in situ diffusion experiments in the Callovian-Oxfordian mudstone (France) are designed in the context of nuclear waste management. β-emitters HTO and (36)Cl radiotracers are representative of neutral and anionic species in these experiments. Studies have been carried out to design an in situ beta monitoring system in order to quantify tracer migration in the rock pore water over time. The development, design and calibration of β-emitter radiation sensors were performed. An optimised geometry was calculated for the detection chamber of (36)Cl in solution (Ø×L=30×2mm(2)) via Monte-Carlo N-Particle transport simulation tools...
April 1, 2017: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/28417183/patella-height-is-not-altered-by-descending-medial-open-wedge-high-tibial-osteotomy-hto-compared-to-ascending-hto
#16
Matthias Krause, Tobias Claus Drenck, Alexander Korthaus, Achim Preiss, Karl-Heinz Frosch, Ralph Akoto
PURPOSE: The primary purpose of the study was to gain insight into geometric changes of the patellar height (PH) and posterior tibial slope (PTS) after a biplanar ascending medial open-wedge high tibial osteotomy (HTO) compared to biplanar descending medial open-wedge HTO in patients with genu varum. METHODS: Sixty-four patients (mean age 45.2 ± 8.7 years, females n = 24, males n = 40) with varus malalignment and medial gonarthrosis were retrospectively studied...
April 17, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28416679/sensorimotor-independent-development-of-hands-and-tools-selectivity-in-the-visual-cortex
#17
Ella Striem-Amit, Gilles Vannuscorps, Alfonso Caramazza
The visual occipito-temporal cortex is composed of several distinct regions specialized in the identification of different object kinds such as tools and bodies. Its organization appears to reflect not only the visual characteristics of the inputs but also the behavior that can be achieved with them. For example, there are spatially overlapping responses for viewing hands and tools, which is likely due to their common role in object-directed actions. How dependent is occipito-temporal cortex organization on object manipulation and motor experience? To investigate this question, we studied five individuals born without hands (individuals with upper limb dysplasia), who use tools with their feet...
May 2, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28396901/-%C3%A2-biomechanics-of-new-implants-for-hto
#18
D Pape, A Diffo Kaze, A Hoffmann, S Maas
Biomechanical characteristics of 5 tibial osteotomy plates for the treatment of medial knee joint osteoarthritis were examined. Fourth-generation tibial bone composites underwent a medial open-wedge high tibial osteotomy, using TomoFix™ standard, PEEKPower®, ContourLock®, TomoFix™ small stature plates, and iBalance® implants. Static compression load to failure and load-controlled cyclic fatigue failure tests were performed. All plates had sufficient stability up to 2400 N in the static compression load to failure tests...
April 10, 2017: Der Orthopäde
https://www.readbyqxmd.com/read/28389878/the-effects-of-different-hinge-positions-on-posterior-tibial-slope-in-medial-open-wedge-high-tibial-osteotomy
#19
Ho-Seung Jo, Jin-Sung Park, June-Ho Byun, Young-Bok Lee, Young-Lac Choi, Seong-Hee Cho, Dong-Kyu Moon, Sang-Hyuk Lee, Sun-Chul Hwang
PURPOSE: The purpose of this study was to determine the standard hinge position to minimize effects from medial open-wedge high tibial osteotomy (HTO) on the posterior tibial slope. METHODS: Sixteen cadaveric knees underwent medial open-wedge osteotomy using either the standard or the low hinge position. To define the standard hinge position, a line 3 cm inferior to the medial tibial plateau towards the fibular head and located its intersection with a longitudinal line 1 cm medial to the fibular shaft was drawn...
April 7, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28364351/-prevention-of-lateral-cortex-fractures-in-open-wedge-high-tibial-osteotomies-the-anteroposterior-drill-hole-approach
#20
G Reyle, O Lorbach, A Diffo Kaze, A Hoffmann, D Pape
BACKGROUND: In osteotomies with larger correction angles, the capacity for elastic deformation is frequently exceeded, resulting in plastic deformation and fracture of the opposite cortex, which may lead to subsequent loss of correction. An anteroposterior drill hole at the apex of the horizontal osteotomy (= hinge) is supposed to increase the capacity of the bony hinge for elastic deformation and ideally to prevent fractures of the opposite cortex. MATERIALS AND METHODS: A high tibial osteotomy (HTO) using standard surgical technique was performed in 20 each of Synbones, Sawbones, and human cadaver tibial specimens...
March 31, 2017: Der Orthopäde
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