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https://www.readbyqxmd.com/read/29222607/static-and-fatigue-strength-of-a-novel-anatomically-contoured-implant-compared-to-five-current-open-wedge-high-tibial-osteotomy-plates
#1
Arnaud Diffo Kaze, Stefan Maas, James Belsey, Alexander Hoffmann, Dietrich Pape
BACKGROUND: The purpose of the present study was to compare the mechanical static and fatigue strength of the size 2 osteotomy plate "Activmotion" with the following five other common implants for the treatment of medial knee joint osteoarthritis: the TomoFix small stature, the TomoFix standard, the Contour Lock, the iBalance and the second generation PEEKPower. METHODS: Six fourth-generation tibial bone composites underwent a medial open-wedge high tibial osteotomy (HTO), according to standard techniques, using size 2 Activmotion osteotomy plates...
December 8, 2017: Journal of Experimental Orthopaedics
https://www.readbyqxmd.com/read/29203354/unicompartmental-knee-arthroplasty-vs-high-tibial-osteotomy-for-knee-osteoarthritis-a-systematic-review-and-meta-analysis
#2
ZhenWu Cao, XiuJun Mai, Jun Wang, EnHui Feng, YongMing Huang
BACKGROUND: Prior studies have compared unicompartmental knee arthroplasty (UKA) with high tibial osteotomy (HTO) suggesting that both procedures had good clinical outcomes. However, which treatment is more beneficial for unicompartmental knee osteoarthritis is still a controversy. The purpose of our study is to obtain postoperative outcomes of revision rate, complications, function results, range of motion (ROM), and pain between the 2 procedures. METHODS: Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) guidelines were followed and study protocol was published online at PROSPERO under registration number CRD42016049316...
December 1, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29172166/removal-of-volatile-odorous-organic-compounds-over-nial-mixed-oxides-at-low-temperature
#3
Shunzheng Zhao, Honghong Yi, Xiaolong Tang, Dongjuan Kang, Fengyu Gao, Jiangen Wang, Yonghai Huang, Zhongyu Yang
In this paper, a series of NiAl hydrotalcite-like compounds (HTLCs) were prepared by the urea-decomposition method. Removal of carbonyl sulfide (COS) and methyl mercaptan (CH4S) over the hydrotalcite-derived oxides (HTO) at low temperature was studied. The Ni3Al-HTO exhibited higher catalytic activities than Ni3Al mixed oxides prepared by physical mixing method (Ni3Al-PM) or impregnation/calcination method (Ni3Al-IC). Based on the characterization, it was found that desulfurization activities are closely tied to the surface acid-base properties of catalysts...
November 21, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/29156902/symptomatic-palliation-with-radiotherapy-in-extensive-heterotopic-ossifications
#4
Mary Jiayi Tao, Linda Probyn, Michael Poon, Hans Kreder, Bo Angela Wan, Patrick Diaz, Edward Chow
Heterotopic ossification (HTO) is the dystrophic formation of mature lamellar bone outside the confines of normal osseous tissues. It is frequently a complication which occurs following traumatic insult, both iatrogenic and non-iatrogenic, and neurological compromise. While mild degree of disease is often asymptomatic, significant pain and mobility limitations may result in reduced quality of life in advanced cases. Currently, the commonly accepted management for patients experiencing significant symptomatic HTOs is a combination therapy of surgical excision with prophylactic radiotherapy in the immediate perioperative period...
September 12, 2017: Annals of Palliative Medicine
https://www.readbyqxmd.com/read/29143167/effectiveness-of-concurrent-procedures-during-high-tibial-osteotomy-for-medial-compartment-osteoarthritis-a-systematic-review-and-meta-analysis
#5
O-Sung Lee, Soyeon Ahn, Jin Hwan Ahn, Seow Hui Teo, Yong Seuk Lee
INTRODUCTION: The purpose of this systematic review and meta-analysis was to evaluate the efficacy of concurrent cartilage procedures during high tibial osteotomy (HTO) for medial compartment osteoarthritis (OA) by comparing the outcomes of studies that directly compared the use of HTO plus concurrent cartilage procedures versus HTO alone. MATERIALS AND METHODS: Results that are possible to be compared in more than two articles were presented as forest plots. A 95% confidence interval was calculated for each effect size, and we calculated the I 2 statistic, which presents the percentage of total variation attributable to the heterogeneity among studies...
November 15, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/29130040/effect-of-computer-navigation-on-accuracy-and-reliability-of-limb-alignment-correction-following-open-wedge-high-tibial-osteotomy-a-meta-analysis
#6
Seung-Beom Han, Hyun Jung Kim, Dae-Hee Lee
Background: It is unclear whether computer navigation can improve the accuracy and reliability of targeted lower limb alignment correction following open-wedge high tibial osteotomy (HTO). This meta-analysis was designed to compare the accuracy and reliability of limb alignment correction between computer navigated and conventional open-wedge HTOs. Methods: Studies that compared postoperative coronal alignment, including mechanical axis (MA) and weight bearing line (WBL) ratio, outliers of alignment correction, and change in tibial posterior slope, following open-wedge HTO performed using computer navigated and conventional methods were included...
2017: BioMed Research International
https://www.readbyqxmd.com/read/29102568/mosaic-osteochondral-autograft-transplantation-versus-bone-marrow-stimulation-technique-as-a-concomitant-procedure-with-opening-wedge-high-tibial-osteotomy-for-spontaneous-osteonecrosis-of-the-medial-femoral-condyle
#7
Ken Kumagai, Yasushi Akamatsu, Hideo Kobayashi, Yoshihiro Kusayama, Tomoyuki Saito
PURPOSE: To evaluate the effects of osteochondral autograft transplantation (OAT) mosaicplasty as a concomitant procedure with opening-wedge valgus high tibial osteotomy (HTO) for spontaneous osteonecrosis of the medial femoral condyle (MFC) on clinical outcomes and cartilage status in comparison with bone marrow stimulation (BMS) by drilling, and to assess the relation between lesion size and postoperative cartilage status. METHODS: Fifty-eight patients with spontaneous osteonecrosis of the MFC were treated with opening-wedge HTO and a concomitant procedure of BMS (28 patients) or OAT (30 patients)...
November 1, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29066726/cytocompatibility-and-antibacterial-activity-of-nanostructured-h2ti5o11%C3%A2-h2o-outlayered-zn-doped-tio2-coatings-on-ti-for-percutaneous-implants
#8
Lan Zhang, Juan Zhang, Fang Dai, Yong Han
To improve skin-integration and antibacterial activity of percutaneous implants, the coatings comprising an outer layer of H2Ti5O11·H2O (HTO) nanoarrays and an inner layer of microporous Zn-doped TiO2 were fabricated on Ti by micro-arc oxidation (MAO) followed with hydrothermal treatment (HT). During HT process, a large proportion of Zn(2+) migrated out from TiO2 layer. TiO2 reacted with OH(-) and H2O, resulting in the nucleation of HTO. The nuclei grew to nanoplates, nanorods and nanofibres with HT process prolonged...
October 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29051848/hydrogenated-tio2-thin-film-for-accelerating-electron-transport-in-highly-efficient-planar-perovskite-solar-cells
#9
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
#10
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
#11
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
#12
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
#13
Tao Mary Jiayi, Probyn Linda, Poon Michael, Kreder Hans, Nousiainen Markku, Jenkinson Richard, Wan Bo Angela, Tsao May, Barnes Elizabeth, Chow Edward
OBJECTIVES: 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 Sunnybrook Health Sciences Centre between July 1998 and August 2016...
December 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
#14
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
#15
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
#16
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 28, 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
#17
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
#18
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...
November 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
#19
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
#20
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
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