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https://www.readbyqxmd.com/read/28324204/tibial-nerve-neuropathy-following-medial-opening-wedge-high-tibial-osteotomy-case-report-of-a-rare-technical-complication
#1
Young-Soo Shin, Hyun-Bo Sim, Jung-Ro Yoon
A 63-year-old woman developed tibial nerve injury caused by an overlong K wire and 4.5-mm cortical lag screw through the first distal hole below the osteotomy during medial opening-wedge high tibial osteotomy (HTO), leading to a lack of sensation on the sole of the foot with no disturbances in motor functions. The temporary lag screw in the first distal hole below the osteotomy is often inserted by an excessive length in order to compress the potentially fractured opposite cortex. By doing so, posterior neurovascular structures including the tibial nerve and the popliteal vessels can be injured...
March 21, 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/28302132/long-term-results-and-comparison-of-the-three-different-high-tibial-osteotomy-and-fixation-techniques-in-medial-compartment-arthrosis
#2
Gökhan Polat, Halil İbrahim Balcı, Mehmet Fevzi Çakmak, Mehmet Demirel, Cengiz Şen, Mehmet Aşık
BACKGROUND: The purpose of this study is to report and analyze the long-term outcomes of the patients who underwent high tibial osteotomy (HTO) with three different techniques for the treatment of medial compartment arthrosis. METHODS: A total of 187 patients (195 knees) who underwent HTO between 1990 and 2010 were retrospectively evaluated. Eighty-eight knees, opening-wedge osteotomy with Puddu plate (group A); 51 knees, transverse osteotomy below the tubercle with external fixator (group B); and 29 knees, closing-wedge osteotomy with staple fixation (group C) were included in the study...
March 16, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28291955/change-of-chondral-lesions-and-predictive-factors-after-medial-open-wedge-high-tibial-osteotomy-with-a-locked-plate-system
#3
Kang-Il Kim, Min-Chul Seo, Sang-Jun Song, Dae-Kyung Bae, Duk-Hyun Kim, Sang Hak Lee
BACKGROUND: Although cartilage regeneration after medial open-wedge high tibial osteotomy (HTO) has been described, there is a paucity of reports regarding which factors influence cartilage regeneration. PURPOSE: To document whether cartilage regeneration occurs in the previously degenerated medial compartment of arthritic knees after medial open-wedge HTO without concomitant cartilage procedures and to assess which predictive factors influence regeneration after HTO...
March 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28282221/collagen-augmentation-improves-the-quality-of-cartilage-repair-after-microfracture-in-patients-undergoing-high-tibial-osteotomy
#4
Man Soo Kim, In Jun Koh, Young Jun Choi, Kyu Hyung Pak, Yong In
BACKGROUND: The quality of cartilage repair after marrow stimulation is unpredictable. To overcome the shortcomings of the microfracture technique, various augmentation techniques have been developed. However, their efficacies remain unclear. HYPOTHESIS: The quality of cartilage repair and clinical outcomes would be superior in patients undergoing high tibial osteotomy (HTO) with microfracture and collagen augmentation compared to those undergoing HTO with microfracture alone without collagen augmentation for the treatment of medial compartment osteoarthritis (OA) of the knee...
March 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28251263/gait-analysis-following-medial-opening-wedge-high-tibial-osteotomy
#5
Vincent Morin, Régis Pailhé, Brice Rubens Duval, Roch Mader, Jérémy Cognault, René-Christopher Rouchy, Dominique Saragaglia
PURPOSE: High tibial osteotomy (HTO) is used to treat young and active patients with knee osteoarthritis (OA) and varus deformity. The medial compartment OA alters the patients' gait. METHODS: A prospective study was carried out in 21 consecutive patients operated for HTO due to knee OA with varus deformity. There were 14 men and 7 women, with a median age of 51.9 years (38-64). Their gait was analyzed preoperatively and at 1 year postoperatively, and compared to a healthy control group...
March 1, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28199861/the-vato-project-development-and-validation-of-a-dynamic-transfer-model-of-tritium-in-grassland-ecosystem
#6
S Le Dizès, C Aulagnier, D Maro, M Rozet, F Vermorel, D Hébert, C Voiseux, L Solier, C Godinot, B Fievet, P Laguionie, O Connan, O Cazimajou, M Morillon
In this paper, a dynamic compartment model with a high temporal resolution has been investigated to describe tritium transfer in grassland ecosystems exposed to atmospheric (3)H releases from nuclear facilities under normal operating or accidental conditions. TOCATTA-χ model belongs to the larger framework of the SYMBIOSE modelling and simulation platform that aims to assess the fate and transport of a wide range of radionuclides in various environmental systems. In this context, the conceptual and mathematical models of TOCATTA-χ have been designed to be relatively simple, minimizing the number of compartments and input parameters required...
February 12, 2017: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/28182736/comparison-of-clinical-and-radiological-outcomes-between-opening-wedge-and-closing-wedge-high-tibial-osteotomy-a-comprehensive-meta-analysis
#7
Lingfeng Wu, Jun Lin, Zhicheng Jin, Xiaobin Cai, Weiyang Gao
High tibial osteotomy (HTO) has been widely used for clinical treatment of osteoarthritis of the medial compartment of the knee, and both opening-wedge and closing-wedge HTO are the most commonly used methods. However, it remains unclear which technique has better clinical and radiological outcomes in practice. To systematically evaluate this issue, we conducted a comprehensive meta-analysis by pooling all available data for the opening-wedge HTO and closing-wedge HTO techniques from the electronic databases including PubMed, Embase, Wed of Science and Cochrane Library...
2017: PloS One
https://www.readbyqxmd.com/read/28176602/comparison-of-hto-with-articular-cartilage-surgery-and-uka-in-unicompartmental-oa
#8
Yoon Sang Jeon, Chi Hoon Ahn, Myung-Ku Kim
PURPOSE: The purpose of this article was to assess the clinical outcome of high tibial osteotomy (HTO) with articular cartilage surgery compared with unicompartmental knee arthroplasty (UKA) in unicompartmental osteoarthritis (OA). METHODS: We designed retrospective study and evaluated 47 patients with unicompartmental OA (Kellgren-Laurence [K-L] grade ≥III OA). Two groups of patients underwent either HTO with articular cartilage surgery or UKA by the senior author between January 2010 and April 2013...
January 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28173978/the-effects-of-tibia-profile-distraction-angle-and-knee-load-on-wedge-instability-and-hinge-fracture-a-finite-element-study
#9
Pei-Wei Weng, Chia-Hsien Chen, Chu-An Luo, Jui-Sheng Sun, Yang-Hwei Tsuang, Cheng-Kung Cheng, Shang-Chih Lin
Several plate systems for high tibial osteotomy (HTO) have been developed to stabilize the opening wedge of an osteotomized tibia. Among them, the TomoFix system, having a quasi-straight and T-shaped design, has been widely adopted in the literature. However, this system is implemented by inserting a lag (i.e., cortical) screw through the proximal combi-hole, to deform the plate and pull the distal tibia toward the plate. This process potentially induces plate springback and creates an elastic preload on the osteotomized tibia, especially at the lateral hinge of the distracted wedge...
February 4, 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/28169100/three-dimensional-relationships-between-secondary-changes-and-selective-osteotomy-parameters-for-biplane-medial-open-wedge-high-tibial-osteotomy
#10
Byung Hoon Lee, Chul Won Ha, Sang Won Moon, Minho Chang, Hun Yeong Kim, Sin Hyung Park, Joon Ho Wang
BACKGROUND: To assess the axial rotational change of distal tibia and posterior tibial slope (PTS) change after OWHTO in 3-D planes and to identify the causal relationship on the effect of variation in the posterior slope angle and rotational errors. METHODS: A total of 21 patients (23 knees) underwent OWHTO and were evaluated with 3D-CT before and after surgery. Medial proximal tibial angle in the coronal plane, PTS in the sagittal plane, and rotational axis in axial plane were evaluated and compared between pre- and post-operative 3D models constructed by applying reverse-engineering software...
February 4, 2017: Knee
https://www.readbyqxmd.com/read/28166705/high-tibial-osteotomy-combined-with-cancellous-bone-graft-and-osteochondral-autograft-transplantation-in-a-patient-with-massive-osteochondral-defects-in-the-medial-femoral-condyle
#11
Takehiko Matsushita, Shu Watanabe, Daisuke Araki, Tomoyuki Matsumoto, Koji Takayama, Masahiro Kurosaka, Ryosuke Kuroda
Treatment of massive osteochondral defects of the medial femoral condyle is challenging. A 46-year-old man who had a medial femoral condyle fracture on his left knee underwent osteosynthesis in a hospital, but the pain remained and the patient was referred to our hospital 8 months after the surgery. Radiographs showed a varus alignment of the leg, and magnetic resonance image showed a massive necrotic area in the medial femoral condyle. The patient received high tibial osteotomy (HTO) combined with iliac cancellous bone graft and an osteochondral autograft transplantation...
January 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28160013/high-tibial-osteotomy-accelerates-lateral-compartment-osteoarthritis-in-discoid-meniscus-patients
#12
Jatin Prakash, Eun-Kyoo Song, Hong An Lim, Young Joo Shin, Cheng Jin, Jong-Keun Seon
PURPOSE: The valgus high tibial osteotomy (HTO) in patients with medial osteoarthritis and discoid lateral meniscus can result in increased load on the lateral compartment and hence a higher chances of tear. This may accelerate the progression of osteoarthritis on lateral compartment. We, therefore, carried out the case control study with a hypothesis that an HTO would accelerate the progression of osteoarthritis (OA) on lateral compartment in patients with complete discoid meniscus. METHODS: The records of all patients with open wedge HTO from 2008 to 2012 were evaluated for complete lateral discoid meniscus...
February 3, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28142346/preoperative-planning-using-the-picture-archiving-and-communication-system-technique-in-high-tibial-osteotomy
#13
Hee-June Kim, Hyun-Joo Lee, Ji-Yeon Shin, Kyeong-Hyeon Park, Seung-Gi Min, Hee-Soo Kyung
PURPOSE: This study aimed to evaluate the accuracy of the picture archiving and communication system (PACS) method in order to select the correction angle and gap in open-wedge high tibial osteotomy (HTO) and clinical results of the patients. MATERIAL AND METHODS: This retrospective study analyzed 27 consecutive patients (30 knees) underwent open-wedge HTO using the PACS method between April 2013 and March 2015. Full-length lower limb radiographs obtained preoperatively and at the final follow-up were used to the percentages of crossing points of the weight-bearing line and tibial plateau with respect to the medial border and mechanical femur-tibia angle...
January 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28137553/can-three-dimensional-patient-specific-cutting-guides-be-used-to-achieve-optimal-correction-for-high-tibial-osteotomy-pilot-study
#14
M Munier, M Donnez, M Ollivier, X Flecher, P Chabrand, J-N Argenson, S Parratte
INTRODUCTION: Treatment of medial tibiofemoral osteoarthritis with a high-tibial osteotomy (HTO) is most effective when the optimal angular correction is achieved. However, conventional instrumentation is limited when multiplanar correction is needed. HYPOTHESIS: Use of patient-specific cutting guides (PSCGs) for HTO provides an accurate correction (difference<2°) relative to the preoperative planning. MATERIALS AND METHODS: Between February 2014 and February 2015, 10 patients (mean age: 46 years [range: 31-59]; grade 1 or 2 osteoarthritis in Ahlbäck's classification) were included prospectively in this reliability and safety study...
January 27, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28100411/comparison-of-mid-term-results-between-conversion-total-knee-arthroplasties-following-closed-wedge-high-tibial-osteotomy-and-primary-total-knee-arthroplasties-a-matched-pair-study-including-patellar-symptom-and-position
#15
Dae Kyung Bae, Sang Jun Song, Cheol Hee Park, Hu Liang, Jung Kwon Bae
BACKGROUND: The purpose of this study was to compare mid-term clinical and radiographic results of conversion total knee arthroplasties (TKA) following a closed-wedge high tibial osteotomy (HTO) and primary TKAs. METHODS: A total of 32 conversion TKAs (29 patients) were compared with a matched control group of patients who had undergone primary TKA. The clinical results were evaluated using the Knee Society Knee and Function score, the Western Ontario and McMaster Universities score, patella score, and range of motion (ROM)...
January 16, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28088850/importance-of-interlayer-equivalent-pores-for-anion-diffusion-in-clay-rich-sedimentary-rocks
#16
Cornelia Wigger, Luc R Van Loon
The anion exclusion behavior in two different clay stones, Opalinus Clay (OPA) and Helvetic Marl (HM), was studied using a well-established experimental through-diffusion technique. The ionic strength of the pore water was varied between 0.01 and 5 M to evaluate its effect on the diffusion of HTO and (36)Cl(-). The total porosity determined by HTO-diffusion was independent of the ionic strength, while the anion accessible porosity varies with the ionic strength of the pore water. In the case of Opalinus Clay, the anion accessible porosity increases from 3% at low ionic strength (0...
February 2, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28063371/individual-dose-due-to-radioactivity-accidental-release-from-fusion-reactor
#17
Baojie Nie, Muyi Ni, Shiping Wei
As an important index shaping the design of fusion safety system, evaluation of public radiation consequences have risen as a hot topic on the way to develop fusion energy. In this work, the comprehensive public early dose was evaluated due to unit gram tritium (HT/HTO), activated dust, activated corrosion products (ACPs) and activated gases accidental release from ITER like fusion reactor. Meanwhile, considering that we cannot completely eliminate the occurrence likelihood of multi-failure of vacuum vessel and tokamak building, we conservatively evaluated the public radiation consequences and environment restoration after the worst hypothetical accident preliminarily...
December 11, 2016: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28053258/ankle-joint-pressure-changes-in-high-tibial-and-distal-femoral-osteotomies-a-cadaver-study
#18
F Krause, A Barandun, G Klammer, I Zderic, B Gueorguiev, T Schmid
AIMS: To assess the effect of high tibial and distal femoral osteotomies (HTO and DFO) on the pressure characteristics of the ankle joint. MATERIALS AND METHODS: Varus and valgus malalignment of the knee was simulated in human cadaver full-length legs. Testing included four measurements: baseline malalignment, 5° and 10° re-aligning osteotomy, and control baseline malalignment. For HTO, testing was rerun with the subtalar joint fixed. In order to represent half body weight, a 300 N force was applied onto the femoral head...
January 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28043753/medial-open-wedge-high-tibial-osteotomy-may-adversely-affect-the-patellofemoral-joint
#19
Kang-Il Kim, Dong-Kyoon Kim, Sang-Jun Song, Sang-Hak Lee, Dae-Kyung Bae
PURPOSE: To evaluate 2-stage arthroscopic findings of the patellofemoral joint before and after medial open-wedge high tibial osteotomy (HTO) and verify whether the patellofemoral joint would be influenced by medial open-wedge HTO. METHODS: We prospectively reviewed 114 cases of medial open-wedge HTO for the treatment of osteoarthritis with a varus knee. First-look arthroscopy was performed during HTO. The mean age at the time of HTO was 56.34 ± 5.4 years (range, 40-69 years)...
December 30, 2016: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28043299/-mechanism-of-protective-effects-of-tumor-necrosis-factor-receptor-associated-protein-1-on-hypoxic-cardiomyocytes-of-rats
#20
F Xiang, D X Zhang, S Y Ma, Y S Huang
Objective: To investigate the mechanism of protective effects of tumor necrosis factor receptor associated protein 1 (TRAP1) on hypoxic cardiomyocytes of rats. Methods: Primary cultured cardiomyocytes were obtained from neonatal Sprague-Dawley rats (aged 1 to 3 days) and then used in the following experiments. (1) Cells were divided into group TRAP1 and control group according to the random number table (the same grouping method below), and then the total protein of cells was extracted. Total protein of cells in group TRAP1 was added with mouse anti-rat TRAP1 monoclonal antibody, while that in control group was added with the same type of IgG from mouse...
December 20, 2016: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
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