Journal articles: 'Stabilité de genou'

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Gillot, T., M. L’Hermette, and C. Tourny. "Effet de la fatigue musculaire sur la stabilité du genou : particularités de la joueuse de handball." Kinésithérapie, la Revue 17, no. 184 (April 2017): 40–41. http://dx.doi.org/10.1016/j.kine.2017.02.036.

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Gillot, Timothée. "Effet de la fatigue musculaire sur la stabilité du genou : particularités de la joueuse de Handball." Kinésithérapie, la Revue 18, no. 194 (February 2018): 40–41. http://dx.doi.org/10.1016/j.kine.2017.12.004.

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Ankri, Marine, Henrique Goncalves, and Anthony Wajsfisz. "Étude du rôle des différentes structures du point d’angle postéro-latéral dans la stabilité rotatoire du genou." Revue de Chirurgie Orthopédique et Traumatologique 102, no. 8 (December 2016): S287—S288. http://dx.doi.org/10.1016/j.rcot.2016.10.042.

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Yang, Xiong-gang, Jiang-tao Feng, Xin He, Feng Wang, and Yong-cheng Hu. "Influence des attelles de genou sur la fonction et la stabilité du genou après reconstruction du ligament croisé antérieur : revue systématique et méta analyse des études randomisées contrôlées." Revue de Chirurgie Orthopédique et Traumatologique 105, no. 6 (October 2019): 703. http://dx.doi.org/10.1016/j.rcot.2019.06.002.

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Cavaignac, E., J. L. Tricoire, R. Pailhé, J. Murgier, N. Reina, P. Chiron, and J. M. Laffosse. "Dislocation intraprothétique récidivante sur prothèse totale de genou à charnière rotatoire. Influence du design de l’implant sur la stabilité intrinsèque." Revue de Chirurgie Orthopédique et Traumatologique 100, no. 7 (November 2014): 596–98. http://dx.doi.org/10.1016/j.rcot.2014.09.276.

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Pison, A., and D. Saragaglia. "Contrôle de la stabilité rotatoire dans les instabilités antérieures chroniques du genou par la plastie mixte intra et extra articulaire aux ischiojambiers. Étude rétrospective de 100 cas à cinq ans de recul minimum." Revue de Chirurgie Orthopédique et Traumatologique 98, no. 8 (December 2012): S443. http://dx.doi.org/10.1016/j.rcot.2012.10.015.

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Ventura, Alberto, Claudio Legnani, Francesca Boisio, Enrico Borgo, and Giuseppe M. Peretti. "L’ajout d’une ténodèse extra-articulaire au facia lata permet un meilleur contrôle de la stabilité rotatoire par rapport à une plastie isolée aux ischio-jambiers prélevés sur le genou controlatéral pour la chirurgie de révision des ruptures du ligament croisé antérieur." Revue de Chirurgie Orthopédique et Traumatologique 107, no. 2 (April 2021): 243. http://dx.doi.org/10.1016/j.rcot.2020.10.035.

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Samaei, A., A. Bakhtiary, F. Elham, and A. Rezasoltani. "Effects of Genu Varum Deformity on Postural Stability." International Journal of Sports Medicine 33, no. 06 (February 29, 2012): 469–73. http://dx.doi.org/10.1055/s-0031-1301331.

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Hernigou, Philippe, Isaac Guissou, Tarek Nanaa, Matthieu Trousselier, Alexandre Poignard, and Charles Henri Flouzat Lachaniette. "Reprise de prothèse totale de genou par prothèse postéro-stabilisée – avantages et limites." Revue de Chirurgie Orthopédique et Traumatologique 101, no. 7 (November 2015): S192. http://dx.doi.org/10.1016/j.rcot.2015.09.130.

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Dragosloveanu, Calin, Serban Dragosloveanu, Bogdan Cretu, and Ioana Cretu. "ORTHOPAEDIC MANAGEMENT IN EXTREME GENU VALGUM AND RECURVATUM IN A PATIENT WITH RHEUMATOID ARTHRITIS." Romanian Journal of Rheumatology 26, no. 3 (September 30, 2017): 138–41. http://dx.doi.org/10.37897/rjr.2017.3.6.

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A case of acquired severe genu valgum and genu recurvatum in a patient with rheumatoid arthritis (RA) is here reported. The pain and genu valgum progressed because of poor RA control. The patient had no history of major trauma of the knee before or after the onset of RA. The most reasonable hypothesis to explain this patient‘s pathology is that occult genu recurvatum developed after a minor trauma and progressed; poor RA control then worsened the stability, the osteopenia and genu valgum, in the end the patient acquired a severe genu valgum with extreme values of the tibiofemoral axes (TFM), with multiplanar knee laxity and important bone destruction. Total knee arthroplasty (TKA) was successfully performed using a constrained hinged prosthesis. One year after the surgery, the patient exhibited improvement in her Knee Society Score from preoperative scores of 19 to postoperative scores of 91, no early or late signs of infection occurred, no early signs of loosening were noted either. Acquired global ligamentous deficiency with hyperextension instability (genu recurvatum) associated with severe genu valgum in patients with RA is rare. Excellent results were obtained with TKA, but the use of the most constrained prosthesis due to massive bone loss and ligamentous deficiency comes with the disadvantages of early aseptic loosening as a result of increased constrained compared to an unconstrained design.

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Bertoni, Livia, Carmen Attolini, Luisa Tessera, Elena Mucciolo, and Elena Giulotto. "Telomeric and Nontelomeric (TTAGGG)n Sequences in Gene Amplification and Chromosome Stability." Genomics 24, no. 1 (November 1994): 53–62. http://dx.doi.org/10.1006/geno.1994.1581.

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Kikuchi, Hiroaki. "Stable standing waves for the two-dimensional Klein–Gordon–Schrödinger system." Proceedings of the Royal Society of Edinburgh: Section A Mathematics 140, no. 5 (October 2010): 1011–39. http://dx.doi.org/10.1017/s0308210509000602.

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AbstractWe study the orbital stability of standing waves for the Klein–Gordon–Schrödinger system in two spatial dimensions. It is proved that the standing wave is stable if the frequency is sufficiently small. To prove this, we obtain the uniqueness of ground state and investigate the spectrum of the appropriate linearized operator by using the perturbation method developed by Genoud and Stuart and Lin and Wei. Then we apply to our system the general theory of Grillakis, Shatah and Strauss.

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Chung, Eun-Kyo, and Bee-Oh Lim. "The Effects of Foot Position on Dynamic Stability during Squat in Female with Genu Varum." Korean Journal of Sports Medicine 36, no. 4 (2018): 207. http://dx.doi.org/10.5763/kjsm.2018.36.4.207.

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di Napoli, Beatrice, Chiara Calderini, Michela Rossi, Rita Vecchiattini, Francesco Portioli, Lucrezia Cascini, and Carlo Battini. "Structural Behaviour of Masonry Vaulted Staircases Using Limit Analysis: The Case Study of the Bell Tower of Santa Maria Delle Vigne." Key Engineering Materials 817 (August 2019): 621–26. http://dx.doi.org/10.4028/www.scientific.net/kem.817.621.

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The present study concerns the structural analysis of the masonry vaulted stairs of the Santa Maria delle Vigne bell tower in Genoa (Italy). The vaulted staircase systems are fully analysed in terms of technological and constructive details. The 3D geometric models are defined from laser scanner data. The structural analyses were carried out by using both the equilibrium limit analysis and a static incremental FEM analysis. Despite the efficacy of classic equilibrium methods in analysing arched and vaulted structures is largely proved in literature, this study demonstrates that vaulted staircase systems often collapse because of compressive failure of masonry before losing stability.

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CHOU, PEI-HSI, YOU-LI CHOU, FONG-CHING SU, WEI-KENG HUANG, and TING-SHENG LIN. "NORMAL GAIT OF CHILDREN." Biomedical Engineering: Applications, Basis and Communications 15, no. 04 (August 25, 2003): 160–63. http://dx.doi.org/10.4015/s1016237203000249.

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The rapid development of gait analysis and its increasing application to pathological gait in children has created an urgent need for normative data. However, research on maturation of gait in children is just in the beginning stage in Taiwan. In order to care for the welfare of children, more data and knowledge in the field are mandatory. The first goal of this study is to offer some background data and basic studies to any other researchers who are interested in this topic. The second goal was to investigate the corresponding factors to gait parameters, such as body weight, height, angular deformities (genu varum and valgum) and torsional deformities (toe in and out). In this study, twenty-three children (five years old in average) were included and motion analysis and force plate system were applied to investigate the kinematics and kinetics of lower limbs. The results showed that body height and weight are both corresponding factors to gait development. Gait analyses revealed that there were no differences between boys and girls. Children with genu valgum attend to more gait stability using compensatory mechanism.

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Ammar, Ameni, Oussama Abcha, and Mohamed Samir Daghfous. "Iatrogenic injuries of the popliteus tendon during total knee arthroplasty." Orthopaedic Journal of Sports Medicine 9, no. 6_suppl2 (June 1, 2021): 2325967121S0018. http://dx.doi.org/10.1177/2325967121s00189.

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Introduction: The popliteus tendon is known to play a key role in the stability of the posterolateral corner of the knee. Its role in the stability of the replaced knee remains contentious. Objectives: The aim of this study was to determine the impact of an iatrogenic lesion of the popliteus tendon during total knee arthroplasty surgery on the stability and function of the knee Methods: We searched in the operating report registers, patients with complete iatrogenic injury of the popliteus tendon during total knee arthroplasty on genu-varum. We evaluated postoperative varus, mobility and stability and we calculated their International Knee Society scores Results: Among the 423 reports of total knee arthroplasties consulted in the operating report registers, we found seven patients with a complete iatrogenic injury of the popliteus tendon. All patients had preoperative extension deficit. All operated knees were stiff, tight and small. At postoperative follow-up, all the knees had good stability and function. All the patients were satisfied. Conclusion: we concluded that the isolated section of the popliteus tendon does not seem to modify the static stability of the knee. However, it can cause a decrease in long-term functional scores. More work is needed to increase understanding of the impact of this iatrogenic lesion on long-term function.

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Goyal, Amrit, Vikas Gupta, Meenakshi Goyal, Rajesh Chandra, and Vinod K. Sharma. "Genu valgum deformity – correction by a wedgeless implantless femoral “V” osteotomy." Acta Orthopaedica Belgica 87, no. 2 (June 30, 2021): 247–54. http://dx.doi.org/10.52628/87.2.07.

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Coronal malalignment of the knee joint is very common in developing countries especially because of nutritional rickets. Significant valgus deformity needs to be treated surgically to improve appearance, gait and function of the patient. The purpose of this prospective study was to evaluate the results of supracondylar “V” osteotomy as a surgical technique for correction of the valgus knee deformity. This study was conducted in a tertiary level teaching hospital and 30 cases were included in the study. For all the patients deformity was assessed using ana- tomical tibiofemoral angle, mechanical axis deviation and intermalleolar distance preoperatively and post- operatively. The average age of our patients was 13.7 years and the average follow up was3.29 years (1.39-14.22 yrs). Clinically the average value of intermalleolar distance preoperatively was 16cm and 3.2 cm postperatively. Average pre-operative tibiofemoral angle was 23° and the average postoperative angle was 6 0 which was found to be statistically significant using the Paired t test (p<0.005). The average value of preoperative mechanical axis deviation was 3.1 cm which decreased to an average value of 1.1 cm postoperatively. The results with this technique have been encouraging. The advantages of this technique are low morbidity, good stability allowing early ambulation, ability to adjust alignment postoperatively by casting and no need for internal fixation. Few studies have been conducted on osteotomies that do not require internal fixation and are inherently stable. This technique has the advantage of practically no occurrence of any infection or a second surgery to remove hardware in children and adolescents. Since no specialized instrumentation, image intensifier and implants are required, it is cost effective and can be used in any primary care or district level surgical setup in a developing country like ours.

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Nha, Kyung Wook, Yoonwon Ha, Seungmin Oh, Vivek P. Nikumbha, Sae Kwang Kwon, Woo-Jin Shin, Byung Hoon Lee, and Keun Bae Hong. "Surgical Treatment With Closing-Wedge Distal Femoral Osteotomy for Recurrent Patellar Dislocation With Genu Valgum." American Journal of Sports Medicine 46, no. 7 (April 24, 2018): 1632–40. http://dx.doi.org/10.1177/0363546518765479.

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Background: Closing-wedge distal femoral osteotomy (CWDFO)—combined with medial reefing and lateral release, if necessary— has been used to treat recurrent patellar dislocation (RPD) with genu valgum. Purpose: To evaluate the clinical and radiologic outcomes of surgical treatment with CWDFO for treatment of RPD with genu valgum. Study Design: Case series; Level of evidence, 4. Methods: Fourteen consecutive patients (23 knees) with RPD and genu valgum were treated with CWDFO. Patients with a minimum 2-year follow-up period were eligible for this study. Patients with prior failed surgery were also eligible. Radiographic evaluation was performed with mechanical femorotibial and lateral distal femoral angle. The radiographic parameters presenting patellar positions and pathologic abnormalities associated with RPD were evaluated. Chondral lesion changes in second-look arthroscopic examination were examined, and clinical outcomes (eg, occurrence of redislocation, range of motion, and clinical scores) were assessed pre- and postoperatively at a minimum of 2 years. Results: At a mean follow-up of 30.7 months (range, 25-62 months), the mean mechanical femorotibial and mechanical lateral distal femoral angles changed significantly from valgus 5° (range, 2°-11°) to varus 3° (2°-11°; P < .001) and from 83° (range, 78°-86°) to 89° (84°-92°; P < .001), respectively. The mean patellar congruence angle improved from 40° lateral (range, 20°-53° lateral) to 4° medial (23° medial to 21° lateral; P < .001), as did the lateral patellofemoral angle from 26° (range, 8°-62°) to 9° (0°-15°; P < .001). Computed tomography scans showed that the mean distance of patellar lateral shift decreased from 13.5 mm (range, 4-22 mm) to 2.0 mm (–4 to 5 mm; P < .001). The mean tibial tubercle to trochlear groove distance significantly decreased from 20.4 to 13.5 mm ( P < .001), while the Caton-Deschamps ratio did not change significantly after surgery ( P = .984). Chondral lesions of the patella and trochlear groove significantly improved or were maintained. None of the patients experienced subluxation or redislocation after surgery. Patellar instability symptoms also improved, as validated by radiographic and other clinical outcomes. Conclusion: CWDFO combined with medial reefing and lateral release successfully treated RPD with genu valgum for a minimum follow-up of 2 years, with improved patellar alignment and stability.

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Amaricai, Elena. "The necessity of using high quality orthoses in rehabilitation medicine." MATEC Web of Conferences 178 (2018): 05009. http://dx.doi.org/10.1051/matecconf/201817805009.

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In rehabilitation medicine there is increasing need of using high quality orthoses that can provide either good stability of the joint or good correction of the postural defect. The advantages of using orthoses that are in the same time hypoallergenic, lightweight, flexible, resistant and durable over time should be considered when prescribing them in clinical practice. This study presents different types of orthoses and the necessity of proper selection of materials when choosing the best ones. We included 34 patients diagnosed with different musculoskeletal conditions (thoracic and thoraco-lumbar scoliosis, genu valgum deviation and rheumatoid arthritis) that required the use of special orthoses (thoraco-lumbar braces, knee or hand orthoses). Patients were asked to complete a questionnaire regarding the quality of the orthoses that they have been used. The following characteristics of an orthosis should be considered when choosing the right one: easily wearable, comfortable, offering good stability of a joint, high quality, lightweight, hypoallergenic and resistant.

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Yang, G., W. Chen, W. Chen, X. Sun, D. Zhou, S. Chen, and L. Zhang. "Rôle de l’épaisseur du cartilage condylien postérieur dans le calcul de l’offset condylien. Influence sur la mobilité après prothèse totale du genou postéro-stabilisée." Revue de Chirurgie Orthopédique et Traumatologique 102, no. 4 (June 2016): 329. http://dx.doi.org/10.1016/j.rcot.2016.03.015.

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Yulianti, Farida, Hidayatul Arisah, and Dita Agisimanto. "Pengujian Stabilitas Genetik Plantlet Citrumelo Hasil tTCL dari Kultur In Vitro Dengan Menggunakan Teknik Sekuen Berulang." Jurnal Hortikultura 27, no. 2 (February 19, 2018): 165. http://dx.doi.org/10.21082/jhort.v27n2.2017.p165-172.

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Protokol organogenesis untuk perbanyakan plantlet Citrumelo menggunakan metode transverse thin cell layer (tTCL) batang telah berhasil dikembangkan. Identifikasi stabilitas genetik tanaman hasil kultur jaringan mutlak diperlukan untuk menguji keberadaan off-type. Tujuan penelitian adalah untuk mengetahui potensi primer retrotransposon dan inter simple sequence repeat (ISSR) dalam mendeteksi stabilitas genetik tanaman Citrumelo dari periode kultur yang panjang. Penelitian dilaksanakan pada bulan Juni 2013 sampai dengan Oktober 2015 di Laboratorium Pemuliaan Tanaman, Balai Penelitian Tanaman Jeruk dan Buah Subtropika, Tlekung. Sebanyak empat penanda dengan urutan basa berulang, yaitu retrotransposon dan ISSR digunakan untuk menguji stabilitas genetik plantlet in vitro yang berumur 22 bulan dan untuk mengonfirmasi metode yang dapat diandalkan untuk perbanyakan jeruk Citrumelo yang true-to-type pada masa mendatang. Daun plantlet diseleksi dan diisolasi secara bulk. Amplifikasi dilakukan terhadap DNA dengan sistem bulk segregant analysis (BSA), dan kemudian dipisahkan menggunakan gel agarose. Tanaman in vitro yang sama secara morfologi dapat dibedakan oleh penanda INT-retrotransposon yang mendeteksi adanya kehilangan pita pada grup sampel dengan ukuran 550 bp. Keberadaan retrotransposon dalam genom berlimpah dan aktivasinya diinduksi oleh stres. Kondisi kultur jaringan berpotensi menginduksi aktivasi retrotransposon. Keragaman genetik diperoleh sebesar 2,6%, tetapi masih dapat diterima untuk plantlet yang dihasilkan dari kultur jangka panjang. Plantlet yang digunakan dalam penelitian ini adalah plantlet yang dikulturkan sejak awal tahun 2014 dan telah digunakan untuk mempelajari faktor media dan lingkungan kultur yang efisien pada Citrumelo selama periode 2014–2015. Aktivitas pengkajian variabilitas genetik plantlet yang dihasilkan melalui tTCL batang masih terus dilakukan. Kombinasi protokol dan deteksi berbasis penanda PCR menjadi sarana yang efektif untuk perbanyakan massa benih berkualitas hasil kultur jaringan untuk mendukung progam pemuliaan maupun perbenihan.Assessment of genetic stability of long-term cultivation of plantlet derived tTCL Citrumelo using repetitive sequence primers. Regeneration of plantlet from organogenesis of stem transverse thin cell layer (tTCL) was achieved for Citrumelo, a valuable rootstock. Identification of the genetic stability of plant tissue culture is absolutely necessary. The aim of this study was to assess the potential retrotransposons and inter simple sequence repeat (ISSR) primers in detecting the genetic stability of the Citrumelo plantlet derived from tTCL technique. The research was conducted from Juni 2013 until October 2015 in Breeding Laboratory of Indonesian Citrus and Subtropical Fruits Research Institute. A four repetitive based sequences retrotransposon and ISSR marker assays were used to evaluate genetic stability of a group of 22 months old in vitro plantlets and to confirm the most reliable method for true-to-type propagation of Citrumelo. Leaves of plantlets were selected and isolated in bulk. Groups of DNA in bulk segregant analysis (BSA) were amplified and separated using agarose gel. Vitroplants that morphologically similar have been effectively distinguished by a selected primer INT- retrotransposon that detect an deletion band at 550 bp on a line a group of sample. Retrotransposon is abundance through the genome and its activation induced by stress condition. Tissue culture condition was reported potential to induce retrotransposon activation. The genetic variation of 2.6% was acceptable for the culture that produced from long-term. Plantlets used in this study were selected from population induced from early 2014, and employed for studying media as well as environment factors for efficiently organogenesis of citrumelo in period of 2014-2015. However, additional study is on going for evaluating genetic variability from a cycle plantlet production through tTCL of stems. This combination protocol of organogenesis and PCR based markers detection would be powerful tools for mass propagation of high quality seedling derived tissue culture for breeding or cultivation programs.

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Boudjahem, Abdel-Ghani, Mouhssin Boulbazine, and Meryem Derdare. "A theoretical study of the stability and electronic properties of GenRu (n = 2–10) clusters and their sensitivity toward SO2 adsorption." Structural Chemistry 31, no. 6 (July 16, 2020): 2341–53. http://dx.doi.org/10.1007/s11224-020-01592-y.

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Huang, Yen-Chun, Kuan-Jung Chen, Kuan-Yu Lin, Oscar Kuang-Sheng Lee, and Jesse Chieh-Szu Yang. "Patient-Specific Instrument Guided Double Chevron-Cut Distal Femur Osteotomy." Journal of Personalized Medicine 11, no. 10 (September 26, 2021): 959. http://dx.doi.org/10.3390/jpm11100959.

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The risk of non-union and prolonged periods of protected weight-bearing still remain unsolved issues after distal femur osteotomy (DFO). To improve the stability, we developed the double chevron-cut technique, which is a modified medial closing-wedge DFO guided by a patient-specific instrument. The purpose of this study was to investigate the feasibility and outcome of this operative approach. Twenty-five knees in twenty-three consecutive patients with genu valgum and lateral compartment osteoarthritis that received double chevron-cut DFO were included. The target of correction was 50% on the weight-bearing line (WBL) ratio. Patient-reported outcomes included the Oxford Knee Score (OKS) and the 2011 Knee Society Score (KSS). The mean of the WBL ratio was corrected from 78.7% ± 12.0% to 48.7% ± 2.9% postoperatively. The mean time to full weight bearing was 3.7 ± 1.4 weeks. Union of the osteotomy was achieved at 11.3 ± 2.8 weeks. At a mean follow-up of 17 months, the OKS improved from a mean of 27.6 ± 11.7 to 39.1 ± 7.5 (p = 0.03), and the KSS from a mean of 92.1 ± 13.0 to 143.9 ± 10.2 (p < 0.001). Three patients developed complications, including one case of peri-implant fracture, one of loss of fixation, and one of non-union. The double chevron-cut DFO followed by immediate weight-bearing as tolerated is effective in treating genu valgum deformity and associated lateral compartment osteoarthritis.

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Guarnieri, Antonio, Sina Saremi, Andrea Pedroncini, Jacob H. Jensen, Silvia Torretta, Marco Vaccari, and Caterina Vincenzi. "Effects of marine traffic on sediment erosion and accumulation in ports: a new model-based methodology." Ocean Science 17, no. 2 (March 9, 2021): 411–30. http://dx.doi.org/10.5194/os-17-411-2021.

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Abstract. The action of propeller-induced jets on the seabed of ports can cause erosion and the deposition of sediment around the port basin, potentially significantly impacting the bottom topography over the medium and long term. If such dynamics are constantly repeated for long periods, a drastic reduction in ships' clearance can result through accretion, or the stability and duration of structures can be threatened through erosion. These sediment-related processes present port management authorities with problems, both in terms of navigational safety and the optimization of management and maintenance activities of the port's bottom and infrastructure. In this study, which is based on integrated numerical modeling, we examine the hydrodynamics and the related bottom sediment erosion and accumulation patterns induced by the action of vessel propellers in the passenger port of Genoa, Italy. The proposed new methodology offers a state-of-the-art science-based tool that can be used to optimize and efficiently plan port management and seabed maintenance.

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Arliani, Gustavo Gonçalves, Gabriel Peixoto Leão Almeida, Ciro Veronese dos Santos, André Manrique Venturini, Diego da Costa Astur, and Moises Cohen. "O efeito do esforço na estabilidade postural em jovens jogadores de futebol." Acta Ortopédica Brasileira 21, no. 3 (June 2013): 155–58. http://dx.doi.org/10.1590/s1413-78522013000300005.

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OBJETIVO: Analisar os efeitos do esforço físico de partida de futebol na capacidade funcional e estabilidade dos membros inferiores em jovens jogadores de futebol. MÉTODOS: Foram analisados 10 atletas jogadores de futebol submetidos a avaliação da capacidade funcional dos membros inferiores através de um protocolo de Hop Test e avaliação do nível de estabilidade postural através do Biodex Stability System (Biodex, Inc., Shirley, Nova Iorque), antes e imediatamente após um tempo de jogo amistoso de futebol de campo com duração de 45 minutos. RESULTADOS: Após a partida, ocorreu uma diminuição no índice de estabilidade global (F(1,23) = 7,29 P = .024) e índice anteroposterior (APSI) (F(1,23) = 5,53 P = .043). A fadiga no membro dominante foi a responsável pelo déficit significativo no OSI (F(1,23) = 3.16, P = .047) e APSI (F(1,23) = 3.49, P = .029), enquanto o membro não-dominante não gerou qualquer alteração na condição pré e pós- jogo. CONCLUSÃO: Uma partida de futebol pode causar diminuição da estabilidade e capacidade funcional dos membros inferiores em jovens jogadores. Nível de evidência iii, pré-teste e pós-teste (caso-controle).

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Narang, Jagriti, Annu Mishra, Roberto Pilloton, Alekhya VV, Shikha Wadhwa, Chandra Shekhar Pundir, and Manika Khanuja. "Development of MoSe2 Nano-Urchins as a Sensing Platform for a Selective Bio-Capturing of Escherichia. coli Shiga Toxin DNA." Biosensors 8, no. 3 (August 14, 2018): 77. http://dx.doi.org/10.3390/bios8030077.

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The present study was aimed to develop “fluorine doped” tin oxide glass electrode with a MoSe2 nano-urchin based electrochemical biosensor for detection of Escherichia. coli Shiga toxin DNA. The study comprises two conductive electrodes, and the working electrodes were drop deposited using MoSe2 nano-urchin, and DNA sequences specific to Shiga toxin Escherichia. coli. Morphological characterizations were performed using Fourier transforms infrared spectrophotometer; X-ray diffraction technique and scanning electron microscopy. All measurements were done using methylene blue as an electrochemical indicator. The proposed electrochemical geno-sensor showed good linear detection range of 1 fM–100 μM with a low detection limit of 1 fM where the current response increased linearly with Escherichia. coli Shiga toxin dsDNA concentration with R2 = 0.99. Additionally, the real sample was spiked with the dsDNA that shows insignificant interference. The results revealed that the developed sensing platform significantly improved the sensitivity and can provide a promising platform for effective detection of biomolecules using minute samples due to its stability and sensitivity.

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Bovolenta, Rossella, Alessandro Iacopino, Roberto Passalacqua, and Bianca Federici. "Field Measurements of Soil Water Content at Shallow Depths for Landslide Monitoring." Geosciences 10, no. 10 (October 13, 2020): 409. http://dx.doi.org/10.3390/geosciences10100409.

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Monitoring changes in soil saturation is important for slope stability analyses. Soil moisture capacitive sensors have recently been developed; their response time is extremely fast, they require little maintenance, and they are relatively inexpensive. The use of low-cost sensors in landslide areas can allow the monitoring of large territories, but appropriate calibration is required. Installation in the field and the setting up of the monitoring network also require attention. In the ALCOTRA AD-VITAM project, the University of Genoa is involved in the development of a system, called LAMP, for the monitoring, analysis and forecasting of slides triggered by rainfalls. Multiple installations (along vertical alignments) of WaterScout sensors are placed in the nodes of the monitoring network. They provide real-time water content profiles in the shallow layers (typically in the upper meter) of a slope. With particular reference to these measurements, the present paper describes the reliability analysis of the instruments, the operations related to the sensor calibration and the installation phases for the monitoring networks. Finally, some of the data coming from a node, belonging to one of the five monitoring networks, are reported.

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Lapie, N., J. F. Potel, M. Boussaton, X. Cassard, and J. M. Laffosse. "14 Résultats à 4 ans des mosaic-plasty dans le traitement des ostéochondrites dissécantes et des fractures ostéo-chondrales sur genoux stables ou stabilisés." Revue de Chirurgie Orthopédique et Réparatrice de l'Appareil Moteur 90, no. 8 (December 2004): 81–82. http://dx.doi.org/10.1016/s0035-1040(04)70809-0.

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Albuquerque, Pedro Paulo Albuquerque Cavalcanti de, Marina Barreto Pereira Moreno, Alexander Cassandri Nishida, Ezequias Costa Rodrigues Junior, and Carlos Eduardo Francci. "Microhardness, Color Stability and Microstructural Analysis of Prefabricated Composite Resin Veneers." Journal of Health Sciences 21, no. 3 (September 24, 2019): 284. http://dx.doi.org/10.17921/2447-8938.2019v21n3p284-289.

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AbstractThe aim of the work was to determine Knoop microhardness (KH), color stability (ΔE00) and microstructure of prefabricated composite resin veneers (PCRVs). Two PCRVs systems (Componeer Brilliant New Generation, Coltene, Altstätten, Switzerland; and Direct Veneer, Edelweiss, Wolfurt, Austria) were tested. KH was measured at the buccal surface of the PCRVs. Color analyze was evaluated by a spectrophotometer and ΔE00 calculated using CIEDE2000 formula. Microstructure of the PCRVs was characterized using scanning electron microscopy (SEM). Data of KH and ΔE00 were subjected to One-way ANOVA followed by Tukey post hoc test (α=0.05). Componeer (KH = 46) and Edelweiss (KH = 43) presented statistical similar hardness results (p>0.05). Componeer (ΔE00water= 0.1 and ΔE00coffee= 13.4) showed lower ΔE00 than Edelweiss (ΔE00water= 0.5 and ΔE00coffee= 18.7). SEM-images indicated similar microstructures of the PCRVs tested. Although PCRVs present similar microhardness and microstructure, Componeer showed higher color stability and lower extrinsic pigmentation to coffee in comparison to Edelweiss. Direct composite resin veneer treatment might be simplified with PCRVs. However, the high pigmentation observed in the PCRVs could generate aesthetic failures over the time.Keywords: Microscopy, Electron, Scanning. Color. Dental Veneers.ResumoO objetivo do trabalho foi determinar a microdureza Knoop (KH), estabilidade de cor (ΔE00) e a microestrutura de facetas de resina composta pré-fabricadas. Os sistemas de facetas Componeer e Edelweiss foram testados. Para cada sistema, a microdureza foi avaliada na superfície vestibular das facetas. A análise da estabilidade de cor foi feita mediante o emprego de um espectrofotômetro e a alteração de cor foi calculada seguindo a fórmula determinada pelo CIEDE2000. A microestrutura dos sistemas foi observada e caracterizada a partir de um microscópio eletrônico de varredura. Os resultados de microdureza e alteração de cor foram submetidos a análise de variância de um fator complementados pelo teste de Tukey (α=0,05). Os sistemas de facetas pré-fabricadas de resina composta apresentaram valores estatisticamente similares de microdureza (p>0,05). O grupo Componeer apresentou uma alteração de cor inferior em relação ao grupo Edelweiss. Os dois sistemas apresentaram uma elevada pigmentação após imersão em solução com café. A microestrutura dos sistemas se mostrou similar em função da avaliação das imagens em microscopia. Apesar dos sistemas apresentarem microdureza e microestrutura similares, o sistema Componeer gerou menor alteração de cor com menor pigmentação a bebida corante empregada em comparação ao sistema Edelweiss. A técnica de facetas dentárias pode ser simplificada utilizando um sistema de facetas pré-fabricadas de resina composta. Todavia, a elevada pigmentação observada no presente estudo deve ser levada em consideração já que o tratamento com esse tipo faceta tende a ser um procedimento estético com durabilidade elevada.Palavras-chaves: Microscopia Eletrônica de Varredura. Cor. Facetas Dentárias.

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Löfstedt, Arne. "Det första nationella provet i samhällskunskap - en studie i bedömarsamstämmighet." Acta Didactica Norge 12, no. 4 (December 12, 2018): 13. http://dx.doi.org/10.5617/adno.6283.

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Skolämnet samhällskunskap som eget ämne existerar i princip enbart i de nordiska länderna. I många andra länder delar flera skolämnen på ämnesinnehållet, till exempel geografi och civics. Ämnesinnehållet är stort och genomgår ständig förändring. År 2013 genomfördes de första nationella proven i samhällskunskap i Sverige för årskurs 9. Med tanke på ämnets karaktär kan det vara speciellt viktigt att undersöka om dessa prov är ”rättvisa.” Avsikten med denna studie är att undersöka en aspekt av denna ”rättvisa”, nämligen interbedömarstabilitet, dvs om samma elevsvar ger upphov till samma bedömning oavsett bedömare. Skolverket i Sverige genomförde 2009 en större studie av de ämnen som då genomförde nationella prov och föreliggande studie försöker dels efterlikna och dels bygga ut upplägget från Skolverket. Studien genomfördes på de första nationella proven i samhällskunskap 2013. Genom att pröva olika reliabilitetsmått inom kategorierna ”consensus estimates”, och ”consistency estimates” analyseras resultaten, bland annat diskuteras måttet intraclass correlation. Syftet är också, då detta var de första proven, att skapa en ram för återkommande studier av Interbedömarreliabilitet. Upplägget med en större mängd lärare som genomför totalt tre bedömningar av de utvalda hela proven försöker också efterlikna bedömningssituationen ute på skolorna såtillvida att det var relativt många lärare med i studien, och de kom från olika skolor spridda över Sverige. Genom detta testas också bedömningsanvisningarnas stabilitet. Själva genomförandet var omfattande och tog två hela dagar. Resultaten pekar på en god överensstämmelse för provbetyget, det sammanfattande omdöme eleverna får. Studien avses att återupprepas under kommande år.Nyckelord: Samhällskunskap, nationella prov, interbedömarreliabilitet, intraclass correlationThe first national test in samhällskunskap – a study of interrater reliabilityAbstractThe Swedish school subject Samhällskunskap (Societal knowledge) exists basically only in the Nordic countries. In other countries a number of different subjects, such as geography and civics, share the content. The content of the subject is constantly changing, depending on how society is changing. The first national tests in Samhällskunskap for all Swedish ninth graders took place in 2013. A large part of the test contains constructed responses. Given the characteristics of the subject we consider it especially important to investigate whether these tests are “fair” or not. The intent of this study is to investigate one aspect of “fairness”, interrater reliability, meaning the degree to which the same student responses are scored equally by different raters. In 2009, the National Agency of Education in Sweden conducted a large study of the subjects Swedish, English and Mathematics. Our study aims to mimic and further develop the design of the study from 2009. Our study was carried out on the first national tests in 2013. The results were analyzed by exploring different reliability measures within the categories consensus estimates, and consistency estimates. As the 2013 tests were the first tests of its kind in Sweden the purpose was also to create a framework for regular studies of interrater reliability. The rater design with a relatively large number of teachers from all over the country, each assessing a total of three complete student test responses aimed at mimicking the way the tests are assessed in schools. This also allowed us to study the stability of our assessment rubrics. The study itself was extensive and took two days to perform. The results indicate a large compliance when it comes to the final grade of the test. The study is meant to be repeated in the coming years.Keywords: Social science, civics, national testing, interrater reliability, intraclass correlation

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Battini, C., and R. Vecchiattini. "SURVEY AND RESTORATION: NEW WAYS OF INTERACTION." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-5/W1 (May 17, 2017): 655–62. http://dx.doi.org/10.5194/isprs-archives-xlii-5-w1-655-2017.

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The present paper analyses two cases exemplifying a possible use of survey and its elaborations in the field of conservation: the bell tower of the Basilica Santa Maria delle Vigne and the Chiesa di San Matteo, both situated in Genoa. In the first case, the threedimensional survey was used as a basis to build a model for the structural analysis. The need for an accurate database created with the three-dimensional survey allowed the research team to determine and highlight the critical points of the structure as the thickness of vaults and floors, the location of loads and the inclination of the walls. The data collected was used to create an accurate 3D model to be tested with simulations, in order to verify the stability of the bell tower when applying stress and limitations. In the second case, the three-dimensional survey was used as the basis for the collection, management and representation of the data derived from the survey on rising damp. The purpose was to test a dynamic data processing system that could be used as a tool to collect data on site as well as to access data remotely. By using software for three-dimensional representation and a node programming language, it was possible to define a system that offered dynamic viewing and was easy to use, through the use of chromatic scales and level curves, which can be generated starting from tables containing numerical data. Surveying, diagnostics, modelling and representation allow one to experiment with new ways of interaction within the common goal of conservation.

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Faccini, F., A. Robbiano, and A. Sacchini. "Geomorphic hazards and intense rainfall: the case study of the Recco Stream catchment (Eastern Liguria, Italy)." Natural Hazards and Earth System Sciences 12, no. 4 (April 11, 2012): 893–903. http://dx.doi.org/10.5194/nhess-12-893-2012.

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Abstract. A critical pluviometric event occurred in the central-eastern Ligurian Riviera, 15 km from Genoa, on 1 June 2007. This event caused landslides and hydraulic problems between Sori and Camogli and in the inland area of the Recco Valley. An analysis of the heavy rainfall was conducted. Hourly precipitation data revealed a critical event between 04:00 a.m. and 07:00 a.m. local time, with more than 220 mm of precipitation over three hours. Slope movements were mainly debris flows that detached from the lateral valleys of the Recco Stream catchment and from well-maintained, wooded slopes that were also characterised by cultivated terraces. Numerous slide planes corresponded to the interface between the surface cover and the underlying bedrock, which presents an unfavourable geologic structure in terms of stability assessment. In most cases, the displaced material had a limited thickness. Debris cover was rapidly channelled along small valleys, which controlled the critical hydraulic conditions in the secondary drainage network. Man-made drainage systems were partially or totally blocked in a very short time and, like the natural watercourses, accumulated thick and extensive alluvial fans. Most of the instability phenomena occurred in areas that had been designated medium or low-risk areas during land planning, and in sectors that were defined as stable, because they lacked geomorphic indicators connected to landslide risks. The above considerations highlight some gaps of the Recco Stream Master Plan. Therefore, to update this land planning tool, it is necessary to extensively investigate local geomorphological characteristics and to adopt a different method for assigning weights to the geohazard maps.

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McTaggart-Cowan, Ron, Thomas J. Galarneau, Lance F. Bosart, and Jason A. Milbrandt. "Development and Tropical Transition of an Alpine Lee Cyclone. Part I: Case Analysis and Evaluation of Numerical Guidance." Monthly Weather Review 138, no. 6 (June 1, 2010): 2281–307. http://dx.doi.org/10.1175/2009mwr3147.1.

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Abstract The development and tropical transition (TT) of a subsynoptic-scale cyclone in the Gulf of Genoa during the Mesoscale Alpine Project (MAP) demonstration of probabilistic hydrological and atmospheric simulation of flood events in the alpine region (D-PHASE) project is investigated using analyses and model simulations. Cyclogenesis occurs in association with the passage of a synoptic-scale trough and attendant surface cold front across the Alps on 15 November 2007. An embedded coherent tropopause disturbance (CTD) plays an important role in promoting the initial development of the lower-level vortex by simultaneously providing quasigeostrophic forcing for ascent and reducing the bulk column stability over warm Mediterranean waters. Persistent convection thereafter erodes the CTD as the storm transitions into a hurricane-like vortex. In addition to this upper-level forcing, a pair of diabatically generated lower-level cyclonic potential vorticity (PV) features associated with distinct flow regimes is potentially important to the cyclogenetic process in this case. The first, a warm surface potential temperature anomaly, is generated during cross-barrier flow by prefrontal upslope precipitation on the Alpine northside, followed by parcel descent in the lee. The second PV feature is a mountain-scale PV banner that extends southward from the southwestern tip of the Alps as the flow is deflected around the mountain chain. Numerical guidance for this case is evaluated on its ability to accurately depict the development and evolution of the cyclone. Comparison of a triply nested integration (grid spacings of 33, 10, and 2.5 km) with observations and analyses demonstrates that the model is capable of simulating the salient features of the event. Combining reliable guidance from high-resolution modeling systems with the paradigms of lee cyclone development and the emerging concepts of TT promotes an improved understanding of these potentially high-impact events.

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Dickason, Celeste Quitiquit, Thomas Jinguji, susan shenoi, Mahesh Thapa, Michael Saper, Viviana Bompadre, Gregory Schmale, and Andrew Hinkle. "INCREASED PREVALENCE OF JUVENILE OSTEOCHONDRITIS DISSECANS IN PATIENTS WITH JUVENILE IDIOPATHIC ARTHRITIS." Orthopaedic Journal of Sports Medicine 8, no. 7_suppl6 (July 1, 2020): 2325967120S0049. http://dx.doi.org/10.1177/2325967120s00498.

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Objectives: To determine the prevalence and severity of OCD in patients with JIA. Methods: This was a retrospective review of patients with JIA and OCD treated between January 2008 and March 2019 at one children’s hospital. We queried Department of Rheumatology records for JIA patients treated during this interval as well as Departments of Orthopedics and Radiology records for patients with OCD. Demographic information, classification of the stability of OCD lesions by review of magnetic resonance imaging, and clinical details of treatment were recorded. Results: 2,021 JIA patients were identified, 20 of whom (19 girls, 1 boy) had OCD of the knee and/or talus for a prevalence of 1/100 or 1000/100,000, or approximately 30-200x that of the general population. These 20 patients had a total of 28 OCD lesions: 43% (9 femur, 3 talus) were radiographically stable over time, 50% (10 femur, 2 patella, and 2 talus) were unstable at initial diagnosis, and 7% (femur) were initially stable but progressed to unstable lesions despite drilling. Eleven patients (55%) underwent surgery: 5 with stable femoral lesions for persistent symptoms despite prolonged non-operative treatment, and 6 for treatment of their unstable lesions (femur and patella). Of these 11 patients, 3 underwent two or more surgeries for OCDs, and 3 were treated with hemiepiphysiodesis for concomitant genu valgum. Conclusion: OCD lesions are 30-200x more prevalent in JIA compared to the general population. In JIA, OCD often presents at an advanced stage requiring surgery for stabilization. Patients with JIA may benefit by early screening, to potentially allow for treatment of an OCD lesion prior to the progression to instability.

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Hinkle, Andrew, Celeste Quitiquit Dickason, Thomas Jinguji, Susan Shenoi, Mahesh Thapa, Mahesh Thapa, Michael G. Saper, Viviana Bompadre, and Gregory A. Schmale. "INCREASED PREVALENCE OF JUVENILE OSTEOCHONDRITIS DISSECANS IN PATIENTS WITH JUVENILE IDIOPATHIC ARTHRITIS." Orthopaedic Journal of Sports Medicine 8, no. 4_suppl3 (April 1, 2020): 2325967120S0022. http://dx.doi.org/10.1177/2325967120s00220.

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Background: Juvenile Idiopathic Arthritis (JIA) is an autoimmune disorder presenting with chronic arthritis with prevalence of 5-20/100,000. Juvenile osteochondritis dissecans (OCD) is an idiopathic disease of articular cartilage and subchondral bone, has onset at 10-16 years, often affects the knee and ankle with prevalence of 5-30/100,000. Hypothesis/Purpose: We hypothesize that OCD is more prevalent in JIA, and when diagnosed in JIA, OCD is advanced, often requiring surgery. Methods: This was a retrospective review of patients with JIA and OCD treated between January 2008 and March 2019 at one children’s hospital. We queried Department of Rheumatology records for JIA patients treated during this interval as well as Departments of Orthopedics and Radiology records for patients with OCD. Demographic information, classification of the stability of OCD lesions by review of magnetic resonance imaging, and clinical details of treatment were recorded. Results: 2,021 JIA patients were identified, 20 of whom (19 girls, 1 boy) had OCD of the knee and/or talus for a prevalence of 1/100 or 1000/100,000, or approximately 30-200x that of the general population. These 20 patients had a total of 28 OCD lesions: 43% (9 femur, 3 talus) were radiographically stable over time, 50% (10 femur, 2 patella, and 2 talus) were unstable at initial diagnosis, and 7% (femur) were initially stable but progressed to unstable lesions despite drilling. Eleven patients (55%) underwent surgery: 5 with stable femoral lesions for persistent symptoms despite prolonged non-operative treatment, and 6 for treatment of their unstable lesions (femur and patella). Of these 11 patients, 3 underwent two or more surgeries for OCDs, and 3 were treated with hemiepiphysiodesis for concomitant genu valgum. Conclusion: OCD lesions are 30-200x more prevalent in JIA compared to the general population. In JIA, OCD often presents at an advanced stage requiring surgery for stabilization. Patients with JIA may benefit by early screening, to potentially allow for treatment of an OCD lesion prior to the progression to instability.

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Ambarwati, Alberta Dinar, Tri Joko Santoso, Edy Listanto, Toto Hadiarto, Eny Ida Riyanti, Kusmana Kusmana, Bambang Sugiharto, Netty Ermawati, and Sukardiman Sukardiman. "Pemuliaan Kentang Produk Rekayasa Genetik Tahan terhadap Penyakit Busuk Daun (Phytophthora infestans) dan Aman Pangan di Indonesia." Jurnal AgroBiogen 13, no. 1 (March 7, 2018): 67. http://dx.doi.org/10.21082/jbio.v13n1.2017.p67-74.

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Pemanfaatan tanaman kentang produk rekayasa genetik (PRG) dalam pemuliaan tanaman melalui persilangan dengan Atlantic dan Granola telah menghasilkan enam galur PRG hasil silangan yang terseleksi. Sebelum komersialisasi, kentang PRG harus dikaji keamanan pangan dan lingkungannya. Penulisan bertujuan memberikan informasi mengenai tanaman kentang PRG di Indonesia yang tahan terhadap penyakit busuk daun Phytophthora infestans dan telah dinyatakan aman untuk di-konsumsi oleh manusia. Analisis stabilitas menunjukkan bahwa gen RB stabil terintegrasi selama empat generasi klonal ber-urutan dalam genom tanaman kentang PRG dengan satu sisipan gen. Hasil studi komposisi dan nutrisi, glikoalkaloid total, dan anti nutrisi pada kentang PRG Katahdin SP951 dan galur-galur silangannya bersifat sepadan dengan Katahdin non-PRG. Studi toksisitas menunjukkan bahwa pemberian pakan suspensi umbi kentang dan suspensi tepung kentang Katahdin SP951 dan galur-galur silangan tidak berdampak terhadap mortalitas, bobot badan, dan tanda-tanda klinis pada mencit. Protein RB tidak memiliki homologi yang tinggi dengan protein toksin sehingga tidak bersifat toksik. Studi alergenisitas dengan Simulated Gastric Fluid dan Simulated Intestinal Fluid menunjukkan bahwa protein umbi kentang Katahdin SP951 dan galur-galur silangan terdegradasi kurang dari 5 menit inkubasi setelah perlakuan enzim pepsin atau tripsin. Protein RB tidak mempunyai sekuen asam amino yang homolog dengan protein alergen, sehingga tidak berpotensi menimbulkan alergi. Kentang Katahdin SP951 telah dinyatakan aman untuk dikonsumsi melalui Keputusan Kepala Badan Pengawas Obat dan Makanan tahun 2016. Tanaman kentang PRG tahan P. infestans yang dapat mengurangi 50% aplikasi fungisida, dan telah mendapat sertifikat aman pangan dan aman lingkungan diharapkan dapat menjadi pilihan untuk dimanfaatkan petani.

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LaPrade, Robert F., Nicholas N. DePhillipo, Tyler Cram, Mark Cinque, Mitchell Kennedy, Grant Dornan, and Luke O’Brien. "Non-Weight Bearing versus Partial Controlled Early Weight Bearing after Reconstruction of the Fibular Collateral Ligament: A Randomized Control Trial." Orthopaedic Journal of Sports Medicine 6, no. 7_suppl4 (July 1, 2018): 2325967118S0006. http://dx.doi.org/10.1177/2325967118s00065.

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Objectives: To 1) determine if early protected weight bearing after an FCL reconstruction was safe based upon an objective difference in laxity on varus stress radiographs at six months postoperatively between patients who were non-weight bearing versus partial controlled weight bearing during the first six weeks of postoperative rehabilitation and 2) determine if there was a difference in pain, edema, and range-of-motion between these two groups at three different time points. Methods: Patients were prospectively enrolled from January 2014 to April 2017. Patients were included in the study if they were undergoing an isolated FCL reconstruction or combined ACL and FCL reconstructions. Patients were randomly assigned to either a control group, which was non-weight bearing for 6 weeks, or a treatment group with partial controlled weight bearing at 40% body weight with crutches for 6 weeks. Patients were excluded if they were less than 18 years of age, pregnant, undergoing a revision FCL reconstruction, concurrent medial collateral and/or posterior cruciate ligament reconstruction, radial or root meniscal repairs, genu varus alignment in patients with chronic FCL tears, or had a body mass index ≥ 35 kg/m2. Results: Thirty-nine patients were enrolled in the study, with 6 month follow-up obtained in 36 patients (92%). Twenty-five patients (69.4%) had an acute injury (≤ 6 weeks) and 11 patients (30.6%) had a chronic injury (> 6 weeks). The mean time from injury to surgery was 2.3 ± 1.9 weeks and 41.5 ± 37.4 weeks for acute and chronic patients, respectively. There were no significant differences in patient age (p = .157) or BMI (p = .534) between the control and treatment groups. Postoperatively (0-6 months), there were no complications reported and no surgical re-interventions for ligamentous reconstruction failure or arthrofibrosis in either group. There was a significant difference between the preoperative side-to-side difference (SSD) (2.4 ± 1.0) and postoperative SSD (0.2 ± 1.0) for lateral compartment gapping on varus stress radiographs in all patients (p< .001). For the control group, the lateral compartment SSD on varus stress radiographs was reduced from 2.4 ± 1.1 to 0.1 ± 1.1 from preoperative to 6 months postoperative (p < .001). For the treatment group, the SSD on varus stress radiographs reduced from 2.3 ± 0.8 to 0.2 ± 0.8 from preoperative to 6 months postoperative respectively (p < .001). There were no significant differences between the preoperative SSD and postoperative SSD on varus stress radiographs between the control and treatment groups. All patients demonstrated significant improvements in subjective outcome scores (IKDC, WOMAC pain, WOMAC stiffness, WOMAC physical function, WOMAC total, Lysholm, and Tegner scores) between the preoperative and 6 months postoperative conditions (p < .001). There were no significant differences for the outcome measures of pain, edema, and knee range of motion between control and treatment groups at any time points. Conclusion: There were no significant differences between patients who were non-weight bearing compared to early weight bearing at 6 months postoperatively regarding knee stability, pain, swelling, and range-of-motion. We recommend early partial weight bearing following an isolated FCL reconstruction or when combined with an ACL reconstruction because our study found it did not compromise the integrity of the FCL reconstruction graft.

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Zhang, ZhiJun, Hui Zhang, GuanYang Song, XueSong Wang, Jin Zhang, Tong Zheng, QianKun Ni, and Hua Feng. "A High-Grade J Sign Is More Likely to Yield Higher Postoperative Patellar Laxity and Residual Maltracking in Patients With Recurrent Patellar Dislocation Treated With Derotational Distal Femoral Osteotomy." American Journal of Sports Medicine 48, no. 1 (November 25, 2019): 117–27. http://dx.doi.org/10.1177/0363546519884669.

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Background: It has been speculated that the patellar J sign may have a negative effect on the clinical outcomes of patients with recurrent patellar dislocation (RPD). Purpose: To (1) evaluate clinical outcomes, postoperative patellar stability, and patellar maltracking correction in patients with RPD treated with derotational distal femoral osteotomy (DDFO) and combined procedures and (2) investigate the influence of J sign severity on the clinical outcomes. Study Design: Cohort study; Level of evidence, 3. Methods: Between January 2015 and December 2016, a total of 78 patients (81 knees) with RPD, a positive J sign, and an excessive femoral anteversion angle (FAA; ≥30°) were surgically treated with DDFO and combined procedures. J sign severity was graded according to a previously described classification system (grades 1-3). Routine radiography and computed tomography were performed on every patient to evaluate the patellar height, trochlear dysplasia, genu valgum, tibial tuberosity–trochlear groove distance, patellar lateral tilt angle, and patella–trochlear groove distance. The patellar lateral shift distance during stress radiography was measured preoperatively and postoperatively to quantify medial patellofemoral ligament (MPFL) graft laxity under anesthesia, and “MPFL residual graft laxity” was defined as the patellar ridge surpassing the apex of the lateral femoral trochlea. Patients were evaluated using the Kujala, International Knee Documentation Committee (IKDC), and Lysholm scores preoperatively and postoperatively. Patients were allocated into 3 subgroups in terms of the severity of the J sign: low-grade group 1 (grade 1; n = 19), low-grade group 2 (grade 2; n = 16), and high-grade group (grade 3; n = 12). Subgroup analyses were performed to investigate the influence of a high-grade J sign on the clinical outcomes. Results: Among the 78 patients (81 knees), 47 patients (47 knees) met the inclusion criteria. The mean follow-up time was 26.1 ± 1.7 months. The mean preoperative and postoperative FAAs were 36.2°± 5.3° and 10.0°± 2.1°, respectively, with a mean correction angle of 26.2°± 5.9°. At the final follow-up, all patient-reported outcomes improved significantly, and subgroup analyses showed that the high-grade group had significantly lower Kujala scores (75.6 vs 85.3 for low-grade group 1 [ P < .001] and 83.4 for low-grade group 2 [ P = .001]), Lysholm scores (77.6 vs 84.6 for low-grade group 1 [ P = .003]), and IKDC scores (78.6 vs 87.3 for low-grade group 1 [ P = .001] and 84.3 for low-grade group 2 [ P = .033]) than the low-grade groups. The total rate of MPFL residual graft laxity was 8.5% (4/47), and the prevalence of the postoperative residual J sign was 38.3% (18/47). Subgroup analyses showed significant differences between the high-grade group and the 2 low-grade groups with regard to the MPFL residual graft laxity rate (33.3% vs 0.0% for low-grade group 1 [ P = .016] and 0.0% for low-grade group 2 [ P = .024]), residual J sign rate (91.7% vs 15.8% for low-grade group 1 [ P < .001] and 25.0% for low-grade group 2 [ P < .001]), and patellar lateral shift distance (14.2 vs 8.1 mm for low-grade group 1 [ P = .002] and 8.7 mm for low-grade group 2 [ P = .007]). Conclusion: In a group of patients treated for RPD with a positive preoperative J sign and increased FAA (≥30°), patients with a preoperative high-grade J sign had inferior clinical outcomes, more MPFL residual graft laxity, and greater residual patellar maltracking.

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"Dans l’ostéochondrite disséquante du genou, l’IRM renseigne sur la stabilité du séquestre." Revue de Chirurgie Orthopédique et Réparatrice de l'Appareil Moteur 90, no. 4 (June 2004): 386. http://dx.doi.org/10.1016/s0035-1040(04)70153-1.

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Mersha, Angelin, Venkatachalam K, Arun Kumar C, and Vibishek Raj P. "GENU VALGUM." INTERNATIONAL JOURNAL OF SCIENTIFIC RESEARCH, October 1, 2020, 1–2. http://dx.doi.org/10.36106/ijsr/5018485.

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Genu valgum or "knock knees" are deformities of the lower limb that occur in the coronal plane.[1] Though most patients are asymptomatic and are fully functional, these conditions are sometimes indicated by a flat feet and medial aspect of foot and knee pain. The normal alignment of the knee joint is at a minimal valgus position ,attained at around 7 years of age, giving the knee the stability required for mobilization. However, in the paediatric age group, the alignment of the knee joint changes from physiological genu valgum by 2 years to varus at about 7 years of age.[2]

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Li, Ye-Ran, Yu-Hang Gao, Chen Yang, Lu Ding, Xuebo Zhang, Hanzhe Chen, Jianguo Liu, and Xin Qi. "Finite-element analysis of the proximal tibial sclerotic bone and different alignment in total knee arthroplasty." BMC Musculoskeletal Disorders 20, no. 1 (December 2019). http://dx.doi.org/10.1186/s12891-019-3008-z.

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Abstract Background Despite potential for improving patient outcomes, studies using three-dimensional measurements to quantify proximal tibial sclerotic bone and its effects on prosthesis stability after total knee arthroplasty (TKA) are lacking. Therefore, this study aimed to determine: (1) the distribution range of tibial sclerotic bone in patients with severe genu varum using three-dimensional measurements, (2) the effect of the proximal tibial sclerotic bone thickness on prosthesis stability according to finite-element modelling of TKA with kinematic alignment (KA), mechanical alignment (MA), and 3° valgus alignment, and (3) the effect of short extension stem augment utilization on prosthesis stability. Methods The sclerotic bone in the medial tibial plateau of 116 patients with severe genu varum was measured and classified according to its position and thickness. Based on these cases, finite-element models were established to simulate 3 different tibial cut alignments with 4 different thicknesses of the sclerotic bone to measure the stress distribution of the tibia and tibial prosthesis, the relative micromotion beneath the stem, and the influence of the short extension stem on stability. Results The distribution range of proximal tibial sclerotic bone was at the anteromedial tibial plateau. The models were divided into four types according to the thickness of the sclerotic bone: 15 mm, 10 mm, 5 mm, and 0 mm. The relative micromotion under maximum stress was smallest after MA with no sclerotic bone (3241 μm) and largest after KA with 15 mm sclerotic bone (4467 μm). Relative micromotion was largest with KA and smallest with MA in sclerotic models with the same thickness. Relative micromotion increased as thickness of the sclerotic bone increased with KA and MA (R = 0.937, P = 0.03 and R = 0.756, P = 0.07, respectively). Relative micromotion decreased with short extension stem augment in the KA model when there was proximal tibial sclerotic bone. Conclusions The influence of proximal tibial sclerotic bone on prosthesis’s stability is significant, especially with KA tibial cut. Tibial component’s short extension stem augment can improve stability.

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Suleiman Ali Mansi. "Risk Factors for Anterior Cruciate Ligament Injury: literature Review: مخاطر الإصابة بالرباط الصليبي الأمامي: مراجعة أدبية." Journal of medical and pharmaceutical sciences 3, no. 1 (March 30, 2019). http://dx.doi.org/10.26389/ajsrp.z181218.

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The Anterior cruciate ligament (ACL) plays an important role in maintaining knee-joint stability. Most ACL injures (approximately 65%) are due to a non-contact mechanism during physical activities, particularly in sports involving a landing from a jump, pivoting on the leg, rapid deceleration and cutting maneuvers. The average injury of ACL rates is still high for both professional and recreational athletes in particular between the group ages of 15 to 25 year old. The purpose of this article was to review and analysis the causes and potential risk factors for the ACL injury. Several anatomic and neuromuscular risk factors are associated with increased risk of suffering ACL injury, such as shoe-surface interaction, quadriceps angle, knee-joint laxity, genu varum of knee, and body composition. These risk factors most likely act in combination to influence the risk of ACL injury. Therefore, these factors should be considered when designing training programs, competitions, and implementing ACL injury prevention programs.

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Musielak, Bartosz Jan, Pirunthi Premakumaran, Piotr Janusz, Magda Dziurda, Aleksander Koch, and Michał Walczak. "Good outcomes of modified Grammont and Langenskiöld technique in children with habitual patellar dislocation." Knee Surgery, Sports Traumatology, Arthroscopy, September 26, 2020. http://dx.doi.org/10.1007/s00167-020-06284-y.

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Abstract Purpose In this study, the functional mid-term outcomes of the modified Grammont and Langenskiöld technique was assessed in skeletally immature patients with habitual patellar dislocation, with emphasis on knee function, pain, and other possible post-surgical complications. This is the first study concerning the application of the modified Grammont and Langenskiöld technique in habitual patellar dislocations. Methods This retrospective cohort study considered 10 patients (15 knees), ranging from 7 to 11 years old, who underwent the modified Grammont and Langenskiold procedure between 2015 and 2018. History of dislocation, patellar stability and range of motion (ROM) were analysed. To assess functional improvement and knee pain, the Kujala Anterior Knee Pain Scale and KOOS-Child Knee Survey were used before and after surgical treatment. Results No history of dislocation was noted after surgical treatment. All 15 knees showed full ROM. There were no signs of genu recurvatum and no length discrepancies were found. The subjective assessment revealed significant improvement in the scores of the KOOS-Child questionnaire in all five sections (p < 0.001), as well as in The Kujala Anterior Knee Pain Scale (p = 0.001). Conclusion The modified Grammont and Langenskiöld technique yields remarkable results in terms of knee stability and knee function, while decreasing recurrence risk and intensity of pain in patients with challenging cases of patellofemoral joint dislocation. This surgical technique is most effective in cases where the patella remains dislocated continuously; however, it may also be used in immature patients with recurrent instability. Level of evidence IV.

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Figari, Massimo, Luca Martinelli, Benedetto Piaggio, Lucia Enoizi, Michele Viviani, and Diego Villa. "An All-Round Design-to-Simulation Approach of a New Z-Drive Escort Tug Class." Journal of Offshore Mechanics and Arctic Engineering 142, no. 3 (February 6, 2020). http://dx.doi.org/10.1115/1.4045440.

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Abstract An industrial-academic collaboration between Rosetti Marino shipyard and University of Genoa presided over a deep theoretical and experimental insight into the maneuvering performances of a new escort tug family. The presented z-drive azimuthal stern drive class is characterized by high intact/damage stability margins, good maneuvering capability, and stable behavior during escort indirect assistance. The project addresses three main research areas: hydrodynamic design of the hull with escort capability, simulation of the escort capabilities in different operational scenario, and development of control logics that will allow autonomous or unmanned operations. The tug design concept is supported by a customized simulation tool that enables the evaluation of the free-sailing and towing maneuvering characteristics for Azimuth Stern Drive (ASD) tugs at high–speed (Escort) and low speed (Harbor Assistance) in a real-time environment. The paper describes the methodological approach adopted for the design and maneuvering characterization of such a class, across some preliminary results. Computational fluid dynamics (CFD) calculations and towing tank tests have been performed onto a prototype tug hull in order to assess the hull design and to infer simulation models able to describe the behavior of a family of vessels. In particular, the propulsion and maneuverability aspects in escort operations are deeply investigated.

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Larosa, Luca, Alberto Traverso, Mario L. Ferrari, and Valentina Zaccaria. "Pressurized SOFC Hybrid Systems: Control System Study and Experimental Verification." Journal of Engineering for Gas Turbines and Power 137, no. 3 (October 7, 2014). http://dx.doi.org/10.1115/1.4028447.

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In this paper, two different advanced control approaches for a pressurized solid oxide fuel cell (SOFC) hybrid system are investigated and compared against traditional proportional integral derivative (PID). Both advanced control methods use model predictive control (MPC): in the first case, the MPC has direct access to the plant manipulated variables, in the second case, the MPC operates on the setpoints of PIDs which control the plant. In the second approach, the idea is to use MPC at the highest level of the plant control system to optimize the performance of bottoming PIDs, retaining system stability and operator confidence. Two MIMO (multi-input multi-output) controllers were obtained: fuel cell power and cathode inlet temperature are the controlled variables; fuel cell bypass flow, current and fuel mass flow rate (the utilization factor kept constant) are the manipulated variables. The two advanced control methods were tested and compared against the conventional PID approach using a SOFC hybrid system model. Then, the MPC controller was implemented in the hybrid system emulator test rig developed by the thermochemical power group (TPG) at the University of Genoa. Experimental tests were carried out to compare MPC against classic PID method: load following tests were carried out. Ramping the fuel cell load from 100% to 80% and back, keeping constant the target of the cathode inlet temperature, the MPC controller was able to reduce the mismatch between the actual and the target values of the cathode inlet temperature from 7 K maximum of the PID controller to 3 K maximum, showing more stable behavior in general.

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Joseph, Leopold, Guillaume Demey, Thomas Chamu, Axel Schmidt, Alexandre Germain, Floris van Rooij, Mo Saffarini, and David Dejour. "Adding a modified Lemaire procedure to ACLR in knees with severe rotational knee instability does not compromise isokinetic muscle recovery at the time of return-to-play." Journal of Experimental Orthopaedics 7, no. 1 (October 30, 2020). http://dx.doi.org/10.1186/s40634-020-00302-1.

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Abstract Purpose To determine whether isokinetic muscle recovery following ACLR using a hamstring tendon (HT) would be equivalent (non-inferior) in knees that had high-grade pivot-shift and adjuvant modified Lemaire procedure versus knees that had minimal pivot-shift and no adjuvant modified Lemaire procedure. Methods We evaluated 96 consecutive patients that underwent primary ACLR. Nine were excluded because of contralateral knee injury, and of the remaining 87, ACLR was performed stand-alone in 52 (Reference group), and with a Lemaire procedure in 35 (Lemaire group) who had high-grade pivot-shift, age < 18, or genu recurvatum > 20°. At 6 months, isokinetic tests were performed at 240°/s and 90°/s to calculate strength deficits of hamstrings (H) and quadriceps (Q). At 8 months, patients were evaluated using IKDC, Lysholm, and Tegner scores. Results Compared to the Reference group, the Lemaire group were younger (23.0 ± 2.5 vs 34.2 ± 10.5, p = 0.021) with a greater proportion of males (80% vs 56%, p < 0.001). The Lemaire group had no complications, but the Reference group had one graft failure and one cyclops syndrome. Strength deficits at 240°/s and at 90°/s were similar in both groups, but mixed H/Q ratios were lower for the Lemaire group (1.02 ± 0.19 vs 1.14 ± 0.24, p = 0.011). IKDC and Lysholm scores were similar in both groups, but Tegner scores were higher in the Lemaire group (median, 6.5 vs 6.0, p = 0.024). Conclusions ACLR with a modified Lemaire procedure for knees with rotational instability grants equivalent isokinetic muscle recovery as stand-alone ACLR in knees with no rotational instability. For ACL-deficient knees with high-grade pivot-shift, a Lemaire procedure restores rotational stability without compromising isokinetic muscle recovery. Study design Level III, comparative study.

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Kumar C, Arun, Ashwanth Narayan B, Rahul Vijay Gussain, Venkatachalam K, and Harshiga Balasubramaniam. "A STUDY OF THE OUTCOME OF “LIGAMENT CROISE ANTERIEUR" (ACL) RECONSTRUCTION USING AUTOLOGOUS HAMSTRING GRAFT." INTERNATIONAL JOURNAL OF SCIENTIFIC RESEARCH, March 1, 2021, 38–44. http://dx.doi.org/10.36106/4824801.

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ACL injury is a widely recognized injury affecting the Genu-Joint Male to female ratio of “L ” injuries are, igament Croise Anterieur (ACL) as high as 9 :1 igament Croise Anterieur (ACL) . “L ” reconstruction with Hamstring grafts, is currently one of the most commonly used method nowadays. This Prospective study of 30 subjects treated by surgicalarthroscopic technique, wherein, Quadrupled Graft of Hamstring was used,for the femoral xation, an endo-button was used, and for the tibial xation, screw of the interference variety was used. Patients were on routine follow up,for at least a period of one year. All the subjects were subjected to post-operative AP and LAT X-rays, to ear mark the placement of the tunnel and positioning of the endo-button in the femoral sector and the interference screw in the tibial sector. Subjects were,upon a follow-up program, at 1,2,3months and there again at the end of 6 months and later on twice in a year. All subjects were evaluated with Tegner and Lysholm Knee Scoring Scale. The major Goal of “L ” recon, is towards re-establishing the stability of the knee. Succe igament Croise Anterieur (ACL) ssful functional outcomes following “L ” reconstruction,with a Semi-tendinosus Gracilis Graft, ha igament Croise Anterieur (ACL) s been reported in the literature. The optimal xation methodology for “L ” reconstruction is still evolving and the e igament Croise Anterieur (ACL) xisting xation devices which has been extensively used are the Endo-button and the “Biological Interference Screws, which has led to a better rehabilitation program postoperatively. In our study, all subjects were ordained to a proper rehabilitation protocol. 10% (n=3) subjects in the present study, had excellent results, 80% (n=24) of the subjects had good results and 10% (n=3) of the subjects had fair results. No subjects were reported to be, in the poor outcome category. Treatment of “L ” njuries necessitates, cautious pre-operati igament Croise Anterieur (ACL) i ve planning, selection of patients, radiological evaluation, selection of graft thickness, planning of timing of surgery, careful intra-operative care, good technique and post-operative rehabilitation, including thorough counselling for a good functional outcome.

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Journal articles on the topic 'Stabilité de genou'

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