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https://www.readbyqxmd.com/read/27909665/autologous-osteophyte-grafting-for-open-wedge-high-tibial-osteotomy
#1
Takenori Akiyama, Ken Okazaki, Taro Mawatari, Satoshi Ikemura, Shunsuke Nakamura
Osteophytes are physiological bony outgrowths that develop at the margins of the articular surfaces during the progression of osteoarthritis; they are associated with active endochondral bone formation processes and expressions of various growth factors. We believe they could be a source of bone grafts as a result of a potentially strong osteoinductive effect. Moreover, osteophytes can be easily harvested by arthroscopy in patients undergoing open-wedge high tibial osteotomy (OW-HTO) for medial unicompartmental knee osteoarthritis...
October 2016: Arthroscopy Techniques
https://www.readbyqxmd.com/read/27909123/comparative-study-of-computer-assisted-total-knee-arthroplasty-after-opening-wedge-osteotomy-versus-after-unicompartmental-arthroplasty
#2
R Pailhé, J Cognault, J Massfelder, A Sharma, R-C Rouchy, B Rubens-Duval, D Saragaglia
AIMS: The role of high tibial osteotomy (HTO) is being questioned by the use of unicompartmental knee arthroplasty (UKA) in the treatment of medial compartment femorotibial osteoarthritis. Our aim was to compare the outcomes of revision HTO or UKA to a total knee arthroplasty (TKA) using computer-assisted surgery in matched groups of patients. PATIENTS AND METHODS: We conducted a retrospective study to compare the clinical and radiological outcome of patients who underwent revision of a HTO to a TKA (group 1) with those who underwent revision of a medial UKA to a TKA (group 2)...
December 2016: Bone & Joint Journal
https://www.readbyqxmd.com/read/27908461/the-vato-project-an-original-methodology-to-study-the-transfer-of-tritium-as-ht-and-hto-in-grassland-ecosystem
#3
D Maro, F Vermorel, M Rozet, C Aulagnier, D Hébert, S Le Dizès, C Voiseux, L Solier, C Cossonnet, C Godinot, B Fiévet, P Laguionie, O Connan, O Cazimajou, M Morillon, M Lamotte
Tritium ((3)H) is mainly released into the environment by nuclear power plants, military nuclear facilities and nuclear reprocessing plants. The construction of new nuclear facilities in the world as well as the evolution of nuclear fuel management might lead to an increase of (3)H discharges from the nuclear industry. The VATO project was set up by IRSN (Institut de Radioprotection et de Sûreté Nucléaire) and EDF (Electricité de France) to reduce the uncertainties in the knowledge about transfers of (3)H from an atmospheric source (currently releasing HT and HTO) to a grassland ecosystem...
November 29, 2016: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/27894175/comparison-of-cable-method-and-miniaci-method-using-picture-archiving-and-communication-system-in-preoperative-planning-for-open-wedge-high-tibial-osteotomy
#4
Seong-Dae Yoon, GuoFeng Zhang, Hee-June Kim, Byoung-Joo Lee, Hee-Soo Kyung
Purpose: The purpose was to compare the accuracy of Miniaci method using picture archiving and communication system (PACS) with a cable method in high tibial osteotomy (HTO). Materials and Methods: This study analyzed 47 patients (52 knees) with varus deformity and medial osteoarthritis. From 2007 to 2013, patients underwent HTO using either a cable method (20 knees) or Miniaci method based on a PACS image (32 knees). In the cable method, the 62.5% point of the mediolateral tibial plateau width was located using an electrocautery cord under fluoroscopy (cable group)...
December 1, 2016: Knee Surgery & related Research
https://www.readbyqxmd.com/read/27894173/open-wedge-high-tibial-osteotomy-and-combined-arthroscopic-surgery-in-severe-medial-osteoarthritis-and-varus-malalignment-minimum-5-year-results
#5
Moon-Jib Yoo, Yong-Eun Shin
Purpose: To evaluate the radiologic and functional outcomes of medial open wedge high tibial osteotomy (HTO) combined with arthroscopic procedure in patients with medial osteoarthritis. Materials and Methods: From June 1996 to March 2010, 26 patients (32 knees) who underwent medial open wedge osteotomy and arthroscopic operation for medial osteoarthritis were retrospectively reviewed. Measurements included hip-knee-ankle (HKA) angle, femorotibial angle, medial proximal tibial angle, posterior tibial slope angle, and Kellgren-Lawrence grade...
December 1, 2016: Knee Surgery & related Research
https://www.readbyqxmd.com/read/27890126/hto-a-complementary-ergonomics-approach
#6
Anette Karltun, Johan Karltun, Martina Berglund, Jörgen Eklund
The field of human factors and ergonomics constitutes a strong potential in systems analysis, design and improvement. However, it is difficult to communicate its potential value. This paper addresses how the human-technology-organization (HTO) concept can be defined and supports the understanding, communication and development of the systems' character and potential of human factors and ergonomics. Empirical examples from the authors' experiences of working with the HTO concept in R&D and teaching are illustrated, including its usefulness as: 1) a conceptual model; 2) an analysis framework; 3) a meta methodology; 4) a pedagogical tool; and 5) a design tool...
March 2017: Applied Ergonomics
https://www.readbyqxmd.com/read/27876267/open-wedge-high-tibial-osteotomy-using-three-dimensional-printed-models-experimental-analysis-using-porcine-bone
#7
Jun-Dae Kwun, Hee-June Kim, Jaeyoung Park, Il-Hyung Park, Hee-Soo Kyung
BACKGROUND: The purpose of this study was to evaluate the usefulness of three-dimensional (3D) printed models for open wedge high tibial osteotomy (HTO) in porcine bone. METHODS: Computed tomography (CT) images were obtained from 10 porcine knees and 3D imaging was planned using the 3D-Slicer program. The osteotomy line was drawn from the three centimeters below the medial tibial plateau to the proximal end of the fibular head. Then the osteotomy gap was opened until the mechanical axis line was 62...
November 18, 2016: Knee
https://www.readbyqxmd.com/read/27857502/comparison-of-closing-wedge-and-opening-wedge-high-tibial-osteotomies-for-medial-compartment-osteoarthritis-of-knee-in-asian-population-mid-term-follow-up
#8
Sanjay Agarwala, Anshul Sobti, Siddhant Naik, Sameer Chaudhari
BACKGROUND: Valgus high tibial osteotomy (HTO) is a well-established treatment option for patients with early osteoarthritis of the medial compartment of the knee. It is achievable with either open-wedge or closed-wedge technique. The aim of the study was to compare the radiological and clinical outcomes following HTO done with open- and closed-wedge techniques. MATERIAL AND METHODS: Two groups of patients undergoing HTO and fixation with locking plates were compared...
October 2016: Journal of Clinical Orthopaedics and Trauma
https://www.readbyqxmd.com/read/27857501/prospective-study-of-the-anterior-cruciate-ligament-reconstruction-associated-with-high-tibial-opening-wedge-osteotomy-in-knee-arthritis-associated-with-instability
#9
Raju Vaishya, Vipul Vijay, Gyanendra Kumar Jha, Amit Kumar Agarwal
INTRODUCTION: Chronic ACL insufficiency with associated varus malalignment due to knee osteoarthritis (OA) is challenging to treat surgically. A combined ACL reconstruction (ACLR) with medial open wedge high tibial osteotomy (HTO) without using any metallic implant for HTO is an effective technique. MATERIALS AND METHOD: All the patients attending the outpatient department ACL injury and with associated medial compartment OA (Kellegren's grade 2 and grade 3) were considered for inclusion in the study...
October 2016: Journal of Clinical Orthopaedics and Trauma
https://www.readbyqxmd.com/read/27847841/unicompartmental-knee-osteoarthritis-ukoa-unicompartmental-knee-arthroplasty-uka-or-high-tibial-osteotomy-hto
#10
REVIEW
E Carlos Rodriguez-Merchan
The aim of this review article is to analyze the results of high tibial osteotomy compared to unicompartmental knee arthroplasty in patients with unicompartmental knee osteoarthritis. The search engine used was PubMed. The keywords were: "high tibial osteotomy versus unicompartmental knee arthroplasty". Twenty-one articles were found on 28 February 2015, but only eighteen were selected and reviewed because they strictly focused on the topic. In a meta-analysis the ratio for an excellent outcome was higher in unicompartmental knee arthroplasty than high tibial osteotomy and the risks of revision and complications were lower in the former...
October 2016: Archives of Bone and Joint Surgery
https://www.readbyqxmd.com/read/27816047/changes-in-hto-and-obt-activity-concentrations-in-the-perch-lake-aquatic-ecosystem
#11
S B Kim, F Farrow, M Bredlaw, M Stuart
Perch Lake, a small shallow shield lake located on the Chalk River Laboratories (CRL) site, contains elevated levels of tritium due to inputs from a nearby nuclear waste management area. The releases have been going on for many years but tritium levels in Perch Lake have been gradually decreasing since about year 2000. Lake water, sediments, aquatic plants, clams and fish were collected during the summer and fall of 2003 and 2013 at three locations in the lake. HTO activity concentrations were measured in all samples and OBT activity concentrations were measured in sediments, plants, clams and fish...
December 2016: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/27810432/total-knee-arthroplasty-conversion-after-open-wedge-high-tibial-osteotomy-a-report-of-three-cases
#12
Hee-June Kim, Young-Gun Kim, Seung-Gi Min, Hee-Soo Kyung
BACKGROUND: The changes in the anatomy that occur due to a high tibial osteotomy (HTO), including the ligament release, can affect the clinical results after a subsequent total knee arthroplasty (TKA). We present three cases in which patients underwent conversion to a TKA after an open-wedge HTO. Of particular interest is the medial instability that was noted during the TKA procedures. METHODS: Three patients underwent conversion to a TKA after an open-wedge HTO...
October 31, 2016: Knee
https://www.readbyqxmd.com/read/27776793/how-accurately-does-high-tibial-osteotomy-correct-the-mechanical-axis-of-an-arthritic-varus-knee-a-systematic-review
#13
Maxim Van den Bempt, Wouter Van Genechten, Toon Claes, Steven Claes
BACKGROUND: The aim of this study was to give an overview of the accuracy of coronal limb alignment correction after high tibial osteotomy (HTO) for the arthritic varus knee by performing a systematic review of the literature. METHODS: The databases PubMed, MEDLINE and Cochrane Library were screened for relevant articles. Only prospective clinical studies with the accuracy of alignment correction by performing HTO as primary or secondary objective were included...
October 21, 2016: Knee
https://www.readbyqxmd.com/read/27773639/analysis-of-outcomes-for-high-tibial-osteotomies-performed-with-cartilage-restoration-techniques
#14
Cynthia A Kahlenberg, Benedict U Nwachukwu, Kamran S Hamid, Michael E Steinhaus, Riley J Williams
PURPOSE: To evaluate reported medium- to long-term outcomes after high tibial osteotomy (HTO) with associated cartilage restoration procedures. METHODS: A review of the MEDLINE database was performed. The inclusion criteria were English language, clinical outcome study with HTO as the primary procedure, use of a form of cartilage repair included, and the mean follow-up period of at least 2 years. Each identified study was reviewed for study design, patient demographics, type of procedures performed, clinical outcomes, progression to total knee arthroplasty, and complications...
October 20, 2016: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/27761624/comparison-of-the-efficiency-of-an-extra-articular-absorber-system-and-high-tibial-osteotomy-for-unloading-the-medial-knee-compartment-an-in-vitro-study
#15
Gerrit Bode, Ferdinand Kloos, Matthias J Feucht, Benjamin Fleischer, Norbert Südkamp, Philipp Niemeyer, Christoph Becher
PURPOSE: The unloading effect of an extra-articular absorber system on the knee joint medial compartment was compared with high tibial osteotomy (HTO) under physiological conditions in vitro. METHODS: Seven fresh-frozen cadaveric knees were used to test isokinetic flexion-extension motions under physiological loading using a biomechanical knee simulator. Tibiofemoral area contact and peak contact pressures were measured using pressure-sensitive film in the untreated medial compartment...
October 19, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/27737301/modern-indications-results-and-global-trends-in-the-use-of-unicompartmental-knee-arthroplasty-and-high-tibial-osteotomy-in-the-treatment-of-isolated-medial-compartment-osteoarthritis
#16
Hendrik A Zuiderbaan, Jelle P van der List, Laura J Kleeblad, Pauline Appelboom, Nanne P Kort, Andrew D Pearle, Maarten V Rademakers
In this review, we evaluate the modern indications, subjective outcome scores, and survivorship results of unicompartmental knee arthroplasty (UKA) and high tibial osteotomy (HTO) in the treatment of isolated medial compartment degeneration of the knee. In addition, in a thorough review of the literature, we evaluate global trends in the use of both methods. In our evaluation of articles, we note that inclusion criteria are relatively broader for UKA than for HTO, where age and body mass index should be considered before HTO surgery in order to optimize clinical outcome and survivorship results...
September 2016: American Journal of Orthopedics
https://www.readbyqxmd.com/read/27724861/morphologic-analysis-of-the-proximal-tibia-after-open-wedge-high-tibial-osteotomy-for-proper-plate-fitting
#17
Oui Sik Yoo, Yong Seuk Lee, Myung Chul Lee, Jae Hong Park, Jae Won Kim, Doo Hoon Sun
BACKGROUND: After open wedge high tibial osteotomy (OWHTO), the proximal fragment resembles the anatomy of the proximal tibia that is aligned in the anterior-posterior direction and the distal fragment resembles the anatomy of the mid shaft that is aligned in the proximal-distal direction. In addition, the medial portion of the proximal fragment becomes aligned medially and the medial portion of the distal fragment, laterally, depending on the magnitude of the posterior opening gap. Therefore, there would be a mismatch between the post-correction bony surface and the previous pre-contoured plate geometry...
October 10, 2016: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/27711710/surface-functionalized-h2ti3o7-nanowires-engineered-for-visible-light-photoswitching-electrochemical-water-splitting-and-photocatalysis
#18
Ayan Sarkar, Keshab Karmakar, Ashutosh K Singh, Kalyan Mandal, Gobinda Gopal Khan
This article demonstrates comprehensive studies on different visible-light driven photoelectrochemical and photocatalytic aspects of a hydrothermally synthesized n-type H2Ti3O7 (HTO) nanowire mesh and its carbon and nitrogen functionalized counterparts, namely C-HTO and N-HTO. It was found that the presence of various defect states within the band gap of HTO, C-HTO and N-HTO nanowires, make them photoactive under visible-light. The photo-conversion efficiencies of HTO, C-HTO, and N-HTO nanowire electrodes are about 0...
September 29, 2016: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/27692866/coronal-alignment-on-the-single-limb-stance-radiograph-in-posterolateral-rotatory-instability-osteoarthritis-and-healthy-knees
#19
Young Gon Na, Moon Jong Chang, Sang Hwa Eom, Seok Jin Kim, Seong Cheol Park, Tae Kyun Kim
BACKGROUND: We aimed to determine whether coronal alignment measured on the single-limb stance (SLS) radiographs differs from those on the double-limb stance (DLS) images. We also investigated whether the size of such differences was affected by the knee pathology, lower limb alignment, and geometry of the tibia or femur. METHODS: We measured coronal alignment with mechanical tibiofemoral angle (MTFA) on the DLS and SLS radiographs in patients with posterolateral rotatory instability (PLRI, 30 knees), osteoarthritis (OA) with varus deformity who were scheduled for high tibial osteotomy (HTO) (60 knees), and in normal control (60 knees)...
September 28, 2016: Knee
https://www.readbyqxmd.com/read/27668223/history-of-previous-knee-surgery-does-not-affect-the-clinical-outcomes-of-primary-total-knee-arthroplasty-in-an-asian-population
#20
Jason Beng Teck Lim, Bryan Loh, Hwei Chi Chong, Andrew Hwee Chye Tan
BACKGROUND: Patients with a history of previous knee surgeries, such as anterior cruciate ligament reconstruction (ACLR) and high tibial osteotomy (HTO), often have a higher likelihood of requiring a subsequent total knee arthroplasty (TKA). However, there is relatively limited data, especially in the Asian population, on how previous knee surgery could affect the clinical outcomes of TKA. Therefore, this study aims to evaluate the impact of previous knee surgeries on the clinical outcomes of future TKA...
August 2016: Annals of Translational Medicine
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