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https://www.readbyqxmd.com/read/29051848/hydrogenated-tio2-thin-film-for-accelerating-electron-transport-in-highly-efficient-planar-perovskite-solar-cells
#1
Xin Yao, Junhui Liang, Yuelong Li, Jingshan Luo, Biao Shi, Changchun Wei, Dekun Zhang, Baozhang Li, Yi Ding, Ying Zhao, Xiaodan Zhang
Intensive studies on low-temperature deposited electron transport materials have been performed to improve the efficiency of n-i-p type planar perovskite solar cells to extend their application on plastic and multijunction device architectures. Here, a TiO2 film with enhanced conductivity and tailored band edge is prepared by magnetron sputtering at room temperature by hydrogen doping (HTO), which accelerates the electron extraction from perovskite photoabsorber and reduces charge transfer resistance, resulting in an improved short circuit current density and fill factor...
October 2017: Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
https://www.readbyqxmd.com/read/29046045/comparative-study-of-clinical-and-radiographic-outcomes-of-high-tibial-osteotomy-in-patients-with-kissing-lesions-and-non-kissing-lesions
#2
Oog-Jin Shon, Sang-Jin Park, Bum-Jin Shim, Dong-Yeol Lee
Purpose: High Outerbridge grade lesions of the articular cartilage have been associated with poor outcomes of high tibial osteotomy (HTO). However, there has been no report on the efficacy of HTO in the presence of kissing lesions. The purpose of this study was to compare clinical and radiographic outcomes of HTO between kissing lesion and non-kissing lesion groups. Materials and Methods: Of the patients with medial compartment osteoarthritis and varus deformity treated with HTO between 2007 and 2012, 21 cases with kissing lesions and 22 cases without kissing lesions were selected...
October 19, 2017: Knee Surgery & related Research
https://www.readbyqxmd.com/read/28975376/customized-post-operative-alignment-improves-clinical-outcome-following-medial-open-wedge-osteotomy
#3
Lisa Hohloch, Suchung Kim, Julian Mehl, Jörn Zwingmann, Matthias J Feucht, Helge Eberbach, Philipp Niemeyer, Norbert Südkamp, Gerrit Bode
PURPOSE: High tibial osteotomy (HTO) has gained more importance in the treatment of cartilage damage or osteoarthritis of the medial compartment with concurrent varus deformity. Concerning the extent of axis correction, various different views exist. The aim of this study was to evaluate the effect of the size of axis correction on functional outcome in patients undergoing a valgus HTO. METHODS: From 2005 to 2013, 156 patients with an underlying varus deformity and cartilage damages or unicompartimental osteoarthritis of the medial compartment were treated by HTO...
October 3, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28974401/the-failing-medial-compartment-in-the-varus-knee-and-its-association-with-cam-deformity-of-the-hip
#4
Jonathan S Palmer, Antony J Palmer, Luke D Jones, Sujin Kang, Nicholas Bottomley, William M Jackson, A Paul Monk, David J Beard, Kassim Javaid, Sion Glyn-Jones, Andrew J Price
BACKGROUND: Since 2011, the knee service at the Nuffield Orthopaedic Centre has been offering a neutralising medial opening wedge high tibial osteotomy (HTO) to a specific group of patients with genu varum and early knee osteoarthritis. An observation was made concerning this group of patients and the presence of CAM deformity at the hip. The aim of this study is to establish whether or not any association exists between the OA phenotype shared by our HTO group and the incidence of CAM deformity at the hip...
September 30, 2017: Knee
https://www.readbyqxmd.com/read/28972793/potential-discrepancy-between-plain-films-and-ct-scans-in-brooker-classification-of-heterotopic-ossification
#5
Mary Jiayi Tao, Linda Probyn, Michael Poon, Hans Kreader, Markku Nousiainen, Richard Jenkinson, Bo Angela Wan, Tsao May, Barnes Elizabeth, Edward Chow
OBJECTIVE: The Brooker Classification is a commonly used tool to characterize the extent of heterotopic ossification (HTO), which is the dystrophic formation of mature lamellar bone in non-osseous tissues such as muscles, connective tissue, or nerves. We aim to provide illustrative cases to describe the limitations and challenges of this system. METHODS: A retrospective review was conducted in all patients who had retrieved hip and/or pelvic radiotherapy for HTO prophylaxis at our institution between July 1998 and August 2016...
October 3, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/28966382/role-of-high-tibial-osteotomy-in-cartilage-regeneration-is-correction-of-malalignment-mandatory-for-success
#6
Matthew Dhanaraj Thambiah, Melvin K L Tan, James H P Hui
Malalignment of the knee can cause debilitating symptoms such as pain, resulting in a decline in function and mobility. Surgical options that exist to address this problem include realignment osteotomies and joint replacements. Realignment osteotomies are the more appropriate options in certain patient populations, especially with regard to age and level of activity. Since a high tibial osteotomy (HTO) was first used to manage malalignment of the knee and osteoarthritis, different techniques involving the use of specialized implants have been developed and further refined to good effect...
September 2017: Indian Journal of Orthopaedics
https://www.readbyqxmd.com/read/28966378/patella-height-changes-post-high-tibial-osteotomy
#7
Siew Ghim Gooi, Chloe Xiao Yun Chan, Melvin Kian Loong Tan, Andrew Kean Seng Lim, Kandiah Satkunanantham, James Hoi Po Hui
BACKGROUND: Medial opening wedge high tibial osteotomy (HTO) is a well-described treatment in early medial compartmental osteoarthritis of the knee. However, two undesirable sequelae may follow -patella baja and changes in the posterior tibial slope (TS). MATERIALS AND METHODS: We conducted a retrospective study in patients who underwent HTO in our center between September 2009 and February 2017. Preoperative and 6-week postoperative long-leg weight bearing films and lateral knee radiographs were assessed...
September 2017: Indian Journal of Orthopaedics
https://www.readbyqxmd.com/read/28964920/return-to-sports-and-quality-of-life-after-high-tibial-osteotomy-in-patients-under-60-years-of-age
#8
C Bastard, G Mirouse, D Potage, H Silbert, F Roubineau, P Hernigou, C H Flouzat-Lachaniette
INTRODUCTION: Since knee osteoarthritis is unicompartmental in most cases, a knee osteotomy is the most logical solution to limit degeneration of the arthritic compartment, thereby delaying knee arthroplasty. Younger patients have high functional demands. The purpose of this study was to evaluate the return to sports and quality of life after high tibial osteotomy (HTO) in athletic patients less than 60 years of age. The hypothesis was that patients can return to sports within 1 year of HTO...
September 27, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28963154/revision-total-knee-arthroplasty-for-failed-high-tibial-osteotomy-and-unicompartmental-knee-arthroplasty-have-similar-patient-reported-outcome-measures-in-a-two-year-follow-up-study
#9
J B T Lim, H C Chong, H N Pang, K J D Tay, S L Chia, N N Lo, S J Yeo
AIMS: Little is known about the relative outcomes of revision of unicompartmental knee arthroplasty (UKA) and high tibial osteotomy (HTO) to total knee arthroplasty (TKA). The aim of this study is to compare the outcomes of revision surgery for the two procedures in terms of complications, re-revision and patient-reported outcome measures (PROMs) at a minimum of two years follow-up. PATIENTS AND METHODS: This study was a retrospective review of data from an institutional arthroplasty registry for cases performed between 2001 and 2014...
October 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28910625/role-of-soil-to-leaf-tritium-transfer-in-controlling-leaf-tritium-dynamics-comparison-of-experimental-garden-and-tritium-transfer-model-results
#10
Masakazu Ota, Nana-Owusua A Kwamena, Steve Mihok, Volodymyr Korolevych
Environmental transfer models assume that organically-bound tritium (OBT) is formed directly from tissue-free water tritium (TFWT) in environmental compartments. Nevertheless, studies in the literature have shown that measured OBT/HTO ratios in environmental samples are variable and generally higher than expected. The importance of soil-to-leaf HTO transfer pathway in controlling the leaf tritium dynamics is not well understood. A model inter-comparison of two tritium transfer models (CTEM-CLASS-TT and SOLVEG-II) was carried out with measured environmental samples from an experimental garden plot set up next to a tritium-processing facility...
September 11, 2017: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/28903017/is-a-high-tibial-osteotomy-hto-superior-to-non-surgical-treatment-in-patients-with-varus-malaligned-medial-knee-osteoarthritis-oa-a%C3%A2-propensity-matched-study-using-2-randomized-controlled-trial-rct-datasets
#11
M V van Outeren, J H Waarsing, R W Brouwer, J A N Verhaar, M Reijman, S M A Bierma-Zeinstra
OBJECTIVE: No randomized controlled trial (RCT) has compared the high tibial osteotomy (HTO) with non-surgical treatment in patients with medial knee osteoarthritis (OA) and varus malalignment. The aim was to compare the effectiveness of an unloader brace treatment or a usual care program to the HTO regarding pain severity and knee function. DESIGN: Surgical treatment (HTO) to two non-surgical options was compared by combining the data of two RCTs. One RCT (n = 117) compared an unloader brace to usual care treatment; the other RCT (n = 92) compared closing to opening wedge HTO...
September 10, 2017: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/28892256/possibility-of-quantitative-t2-mapping-mri-of-cartilage-near-metal-in-high-tibial-osteotomy-a-human-cadaver-study
#12
Joost Verschueren, Duncan E Meuffels, Esther E Bron, Stefan Klein, Gert-Jan Kleinrensink, Jan A N Verhaar, Sita M A Bierma-Zeinstra, Gabriel P Krestin, Piotr A Wielopolski, Max Reijman, Edwin H G Oei
T2-mapping is a widely used quantitative MRI technique in osteoarthritis research. An important challenge for its application in the context of high tibial osteotomy (HTO) is the presence of metallic fixation devices. In this study, we evaluated the possibility of performing T2-mapping after a HTO, by assessing the extent of magnetic susceptibility artifacts and the influence on T2 relaxation times caused by two commonly used fixation devices. T2-mapping with a 3D fast spin-echo sequence at 3 Tesla was performed on 11 human cadaveric knee joints before and after implantation of a titanium plate and screws (n = 5) or cobalt chrome staples(n = 6)...
September 11, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28888904/changes-in-biomechanical-risk-factors-for-knee-osteoarthritis-and-their-association-with-5-year-clinically-important-improvement-after-limb-realignment-surgery
#13
T B Birmingham, R Moyer, K Leitch, B Chesworth, D Bryant, K Willits, R Litchfield, P J Fowler, J R Giffin
OBJECTIVE: To evaluate 5-year outcomes after lower limb realignment and test the hypothesis that surgery-induced changes in selected biomechanical risk factors for medial knee osteoarthritis (OA) are associated with clinically important improvements. DESIGN: We prospectively evaluated patient-reported outcomes, full-limb standing radiographs and gait biomechanics before, 6 months (surgery-induced change) and 5 years after medial opening wedge high tibial osteotomy (HTO) in 170 patients (46...
September 6, 2017: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/28888524/total-knee-arthroplasty-after-opening-%C3%A2-versus-closing-wedge-high-tibial-osteotomy-a-135-case-series-with-minimum-5-year-follow-up
#14
M Ehlinger, A D'Ambrosio, P Vie, S Leclerc, F Bonnomet, P Bonnevialle, S Lustig, S Parratte, M Colmar, J-N Argenson
INTRODUCTION: High tibial osteotomy (HTO) is effective in treating isolated medial osteoarthritis of the knee, but subsequent deterioration is inevitable, and total knee arthroplasty (TKA) is then an option. The present study sought to compare TKA following medial opening-wedge HTO (OW-HTO) versus lateral closing-wedge HTO (CW-HTO) in terms of intraoperative data and clinical results. The study hypothesis was that there is no significant difference in clinical results or complications in TKA following OW-HTO or CW-HTO...
September 6, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28866395/tritium-in-river-waters-from-french-mediterranean-catchments-background-levels-and-variability
#15
Loïc Ducros, Frédérique Eyrolle, Claire Della Vedova, Sabine Charmasson, Marc Leblanc, Adriano Mayer, Milanka Babic, Christelle Antonelli, David Mourier, Franck Giner
Tritium background levels in various environmental compartments are deeply needed in particular to assess radiological impact, especially in river systems where most of releases from nuclear facilities are performed. The present study aims to identify the main environmental factors that influence tritium background levels in rivers at the regional scale. 41 samples were collected from 2014 to 2016 along 17 small rivers in the south of France. All were located out of the influence of direct releases from nuclear facilities...
August 31, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28860395/no-difference-in-time-dependent-improvement-in-functional-outcome-following-closing-wedge-versus-opening-wedge-high-tibial-osteotomy-a-randomised-controlled-trial-with-two-year-follow-up
#16
RANDOMIZED CONTROLLED TRIAL
T K Nerhus, A Ekeland, G Solberg, B H Olsen, J E Madsen, S Heir
AIMS: The aim of this prospective randomised study was to compare the time course of clinical improvement during the first two years following a closing or opening wedge high tibial osteotomy (HTO). It was hypothesised that there would be no differences in clinical outcome between the two techniques. PATIENTS AND METHODS: Between 2007 and 2013, 70 consecutive patients were randomly allocated to undergo either a closing or opening wedge HTO. All patients had medial compartment osteoarthritis (OA), and were aged between 30 years and 60 years...
September 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28854769/comparison-of-mechanical-axis-and-dynamic-range-assessed-with-weight-bearing-radiographs-and-navigation-system-in-closed-wedge-high-tibial-osteotomy
#17
Dae Kyung Bae, Jong Whan Lee, Seong Jin Cho, Sang Jun Song
Purpose: To compare navigation and weight bearing radiographic measurements of mechanical axis (MA) before and after closed wedge high tibial osteotomy (HTO) and to evaluate post-osteotomy changes in MA assessed during application of external varus or valgus force. Materials and Methods: Data from 30 consecutive patients (30 knees) who underwent computer-assisted closed-wedge HTO were prospectively analyzed. Pre- and postoperative weight bearing radiographic evaluation of MA was performed...
September 1, 2017: Knee Surgery & related Research
https://www.readbyqxmd.com/read/28831525/large-correction-in-opening-wedge-high-tibial-osteotomy-with-resultant-joint-line-obliquity-induces-excessive-shear-stress-on-the-articular-cartilage
#18
Hiroshi Nakayama, Steffen Schröter, Chie Yamamoto, Tomoya Iseki, Ryo Kanto, Kenji Kurosaka, Shunichiro Kambara, Shinichi Yoshiya, Masaru Higa
PURPOSE: The purpose of this study was to analyse the resultant stress induced by joint-line obliquity after HTO for varus knee deformity using a three-dimensional (3D) finite element model analysis. METHODS: The geometrical bone data used in this study were derived from commercially available human bone digital anatomy media. The 3D knee models were developed using 3D computer-aided design software. The articular surface was overlaid with a 2-mm-thick cartilage layer for both femoral and tibial condyles...
August 22, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
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
#19
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
#20
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
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