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q angle

Li-Chuang Wu, Hai-Bo Zhou, Chao Zhang, Lei Chen, Cai-Long Liu
OBJECTIVE: To study clinical effects of triad operation including reconstruction of medial patellofemoral ligament, release of lateral retinaculum, Fulkerson tibial tubercle osteotomy, medial transfer and advancement under arthroscopy for the treatment of habitual dislocation of patella. METHODS: From March 2010 to May 2016, 35 patients with habitual patellar dislocation were treated with the triad operation, including 14 males, 21 females, ranging in age from 18 to 38 years old, with an average of 25...
November 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
Rong Tang, Jie Hao, Ruijie Zong, Fangxia Wu, Yangyang Zeng, Zhenqing Zhang
In this study, the TEMPO-mediated (TEMPO/NaBr/NaClO) oxidation pattern of curdlan was investigated through comprehensively structural analysis of the corresponding oxidized products. During the structural analysis, infrared spectroscopy (IR), nuclear magnetic resonance (NMR) spectroscopy, gel permeation chromatography tandem multiple angle laser scattering (GPC-MALS) and ultra-high performance liquid chromatography tandem quadrupole time of flight mass spectrometry (UHPLC-Q/TOF-MS) were applied. As a result, the homogenous β1-3 polyglucuronic acids (MW, 49...
April 15, 2018: Carbohydrate Polymers
R Nail-Barthelemy, N Stroumza, Q Qassemyar, M Delage, A Nassif, M Atlan
BACKGROUND: Hidradenitis suppurativa is a very debilitating disease, treated by antibiotics and excision. The reconstruction is usually done by secondary wound healing and/or split-thichness skin graft. The aim of this study was to evaluate the reconstruction of the axilla with local perforator flaps as a single stage surgical treatment. METHODS: This was a monocentric retrospective study conducted between November 2013 and June 2015. We included the patients with a severe axillary localization of the disease...
February 13, 2018: Annales de Chirurgie Plastique et Esthétique
Nino Wili, Gunnar Jeschke
A new ultra-wide band (UWB) pulse EPR method is introduced for observing all nuclear frequencies of a paramagnetic center in a single shot. It is based on burning spectral holes with a high turning angle (HTA) pulse that excites forbidden transitions and subsequent detection of the hole pattern by a chirp echo. We term this method Chirp Echo Epr SpectroscopY (CHEESY)-detected NMR. The approach is a revival of FT EPR-detected NMR. It yields similar spectra and the same type of information as electron-electron double resonance (ELDOR)-detected NMR, but with a multiplex advantage...
February 6, 2018: Journal of Magnetic Resonance
Dafne Musino, Anne-Caroline Genix, Thomas Chaussée, Laurent Guy, Natalia Meissner, Radosław Kozak, Thomas Bizien, Julian Oberdisse
A new method based on the combination of small-angle scattering, reverse Monte Carlo simulations, and an aggregate recognition algorithm is proposed to characterize the structure of nanoparticle suspensions in solvents and polymer nanocomposites, allowing detailed studies of the impact of different nanoparticle surface modifications. Experimental small-angle scattering is reproduced using simulated annealing of configurations of polydisperse particles in a simulation box compatible with the lowest experimental q-vector...
February 14, 2018: Langmuir: the ACS Journal of Surfaces and Colloids
Juan Manuel Montes-de-Oca-Ávalos, Davide Altamura, Roberto Jorge Candal, Francesco Scattarella, Dritan Siliqi, Cinzia Giannini, María Lidia Herrera
Films obtained by casting, starting from conventional emulsions (CE), nanoemulsions (NE) or their gels, which led to different structures, with the aim of explore the relationship between structure and physical properties, were prepared. Sodium caseinate was used as the matrix, glycerol as plasticizer, glucono-delta-lactone as acidulant to form the gels, and TiO2 nanoparticles as reinforcement to improve physical behavior. Structural characterization was performed by SAXS and WAXS (Small and Wide Angle X-ray Scattering, respectively), combined with confocal and scanning electron microscopy...
March 2018: Food Research International
Masaki Akeda, Teruhisa Mihata, Woong Kyo Jeong, Michelle H McGarry, Tetsuya Yamazaki, Thay Q Lee
BACKGROUND: Internal impingement and decreased anterior stability, which result from shoulder capsular loosening, are common shoulder pathologies in throwing athletes. The purpose of this study was to assess the effect of shoulder abduction angle on shoulder internal impingement and anterior shoulder stability during the simulated throwing motion. METHODS: Eight cadaveric shoulders were tested by simulating the late-cocking and acceleration phases of the throwing motion for intact and thrower's shoulder conditions...
February 7, 2018: Journal of Shoulder and Elbow Surgery
Chuan-Qiang Shao, Chang-Chun Chen, Chun-Cheng Zhao, Hong-Mei Yang, Yan-Zhong Kang
OBJECTIVE: To investigate surgical method and clinical curative effects of medial patellofemoral ligament (MPFL) reconstruction with great adductor muscular tendon in treating teenagers' recurrent patellar dislocation. METHODS: From May 2012 to September 2014, 19 patients with recurrent dislocation of patellar, including 6 males and 13 females with an average of 16 years old (ranged from 13 to 17 years), the courses of disease ranged from 3 to 18 months(averaged 6 months)...
June 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
Li-Hua Cui
Patellofemoral pain syndrome (PFPS) is one of the most common diseases that cause pain in the knee joint. At present, there is no specific diagnostic measure. The diagnosis of patellofemoral pain syndrome may be considered when imaging is performed without cartilage, ligament and soft tissue injuries. The etiology includes abnormalities of the patellar motion caused by various anatomical abnormalities, such as abnormal patellar position, increased Q angle, and excessive valgus foot. Dysfunction of the lower extremity muscles such as the imbalance of the four biceps and the dysfunction of the gluteal muscles also play an important role in the development of patellofemoral pain syndrome...
July 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
Salvador Diaz-Miguel, Eva Lopezosa-Reca, Salomon Benhamu-Benhamu, Ana Belen Ortega-Avila, Raquel García-De-La-Peña, Gabriel Gijon-Nogueron
BACKGROUND: Physical activity during childhood can be beneficial in the long term. However, this practice can influence the child's physiological development. The aim of this study was to determine whether the practice of soccer, in moderation, could be a risk factor for the inadequate development of the lower limb. METHODS: The study group was composed of 115 children, of whom 59 (mean age 8.03±0.89years) practised soccer 3 times a week and had a positive Physical Activity Questionnaire for Adolescents (PAQ-A) score, while a further 56 (mean age 7...
November 17, 2017: Foot
L Bai, Y Hou, G-H Lin, X Zhang, G-Q Liu, B Yu
INTRODUCTION: Our aim was to compare the effect of Sinus Tarsi Approach (STA) vs Extensile Lateral Approach(ELA) for Treatment of Closed Displaced Intra-Articular Calcaneal Fractures (DIACF.) is still being debated, MATERIALS AND METHODS: A thorough research was carried out in the MEDLINE, EMBASE, and Cochrane library databases from inception to December 2016. Only prospective or retrospective comparative studies was selected in this meta-analysis. Two independent reviewers conducted literature search, data extraction, and quality assessment...
February 1, 2018: Orthopaedics & Traumatology, Surgery & Research: OTSR
Xingyuan Xu, Jiayang Wu, Thach G Nguyen, Mehrdad Shoeiby, Sai T Chu, Brent E Little, Roberto Morandotti, Arnan Mitchell, David J Moss
We demonstrate advanced transversal radio frequency (RF) and microwave functions based on a Kerr optical comb source generated by an integrated micro-ring resonator. We achieve extremely high performance for an optical true time delay aimed at tunable phased array antenna applications, as well as reconfigurable microwave photonic filters. Our results agree well with theory. We show that our true time delay would yield a phased array antenna with features that include high angular resolution and a wide range of beam steering angles, while the microwave photonic filters feature high Q factors, wideband tunability, and highly reconfigurable filtering shapes...
February 5, 2018: Optics Express
Wei Wang, Xumin Gao, Xiangfei Shen, Zheng Shi, Yongjin Wang
To completely clarify the spectral responses of linear grating filters (LGFs) under full-conical incidence (where the incident plane is parallel to the linear grating bars), a bandstop LGF is implemented on an HfO2-on-silicon platform, and its spectral responses are comprehensively investigated. The measured spectra agree well with the simulated outcomes. For the TM- (or TE-) polarized wave under full-conical incidence, there exists a pair of resonance bands, whose spectral features differ significantly from each other...
February 1, 2018: Optics Letters
C J Liu, Z Q Zhu, S Duan, K F Wang, W W Xia, S Xu, H Y Liu
Objective: To review and compare radiological parameters between degenerative lumbar kyphoscoliosis (DLKS) and degenerative lumbar kyphosis (DLK), and analyze the relationships between coronal and sagittal deformities and compensatory mechanisms of sagittal balance. Methods: A total of 82 patients with lumbar degenerative deformities were enrolled for our radiographic study at Department of Spinal Surgery, Peking University People's Hospital from January 2016 to May 2017. These patients were divided into two groups: DLKS group (39 patients) with lumbar coronal and sagittal deformities, and DLK group (43 patients) just with lumbar sagittal deformity...
February 1, 2018: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
Alireza F Behbahani, S Mehdi Vaez Allaei, Ghodratollah H Motlagh, Hossein Eslami, Vagelis A Harmandaris
Poly(methyl-methacrylate), PMMA, is a disubstituted vinyl polymer whose properties depend significantly on its tacticity. Here we present a detailed study of the structure, conformation, and dynamics of syndiotactic, atactic, and isotactic PMMA melts at various temperatures (580, 550, 520, and 490 K) via all-atom molecular dynamics simulations. The calculated volumetric properties are close to experimental data. The Tg and chain dimensions of PMMA model systems are found to depend strongly on tacticity in agreement with experimental findings...
February 2, 2018: Soft Matter
Z Y Zou, H Q Liu, W X Ding, J Chen, D L Brower, H Lian, S X Wang, W M Li, Y Yao, L Zeng, Y X Jie
A double-pass radially view 11 chords polarimeter-interferometer system has been operated on the experimental advanced superconducting tokamak and provides important current profile information for plasma control. Stray light originating from spurious reflections along the optical path (unwanted reflections from various optical components/mounts and transmissive optical elements such as windows, waveplates, and lens as well as the detectors) and also direct feedback from the retro-reflector used to realize the double-pass configuration can both contribute to contamination of the Faraday rotation measurement accuracy...
January 2018: Review of Scientific Instruments
Jon R Davids, Nina Q Cung, Robin Pomeroy, Brooke Schultz, Leslie Torburn, Vedant A Kulkarni, Sean Brown, Anita M Bagley
BACKGROUND: Abnormal hip rotation is a common deviation in children with cerebral palsy (CP). Clinicians typically assess hip rotation during gait by observing the direction that the patella points relative to the path of walking, which is referred to as the knee progression angle (KPA). Two kinematic methods for calculating the KPA are compared with each other. Video-based qualitative assessment of KPA is compared with the quantitative methods to determine reliability and validity. METHODS: The KPA was calculated by both direct and indirect methods for 32 typically developing (TD) children and a convenience cohort of 43 children with hemiplegic type CP...
January 31, 2018: Journal of Pediatric Orthopedics
Hua Lu, Xuetao Gan, Dong Mao, Baohua Jia, Jianlin Zhao
The quality (Q) factor and tunability of electromagnetically induced transparency (EIT)-like effect in plasmonic systems are restrained by the intrinsic loss and weak adjustability of metals, limiting the performance of the devices including optical sensor and storage. Exploring new schemes to realize the high Q-factor and tunable EIT-like effect is particularly significant in plasmonic systems. Here, we present an ultrahigh Q-factor and flexibly tunable EIT-like response in a novel plasmonic system. The results illustrate that the induced transparency distinctly appears when surface plasmon polaritons excited on the metal satisfy the wavevector matching condition with the guided mode in the high-refractive index (HRI) layer...
January 24, 2018: Scientific Reports
Denis S Tikhonov, Dmitry I Sharapa, Arseniy A Otlyotov, Petr M Solyankin, Anatolii N Rykov, Alexander P Shkurinov, Olga E Grikina, Leonid S Khaikin
The conformational properties of the nitrogroup in nitroxoline (8-hydroxy-5-nitroquinoline, NXN) were investigated in the gas phase by means of gas electron diffraction (GED) and quantum chemical calculations, and also with solid-state analysis performed using terahertz time-domain spectroscopy (THz-TDS). The results of the GED refinement show that in the equilibrium structure the NO2-group is twisted by angle φ = 8o ± 3o with respect to the 8-hydroxyoquinoline plane. This is the result of interatomic repulsion of oxygen in the NO2-group from the closest hydrogen, which overcomes the energy gain from the π-π conjugation of nitrogroup and aromatic system of 8-hydroxyoquinoline...
January 23, 2018: Journal of Physical Chemistry. A
Maria An Saad, Antonio Jl Jorge, Wolney de Andrade Martins, Gilberto P Cardoso, Marcia Ms Dos Santos, Maria Lg Rosa, Giovanna Ab Lima, Rafaela Q de Moraes, Rubens A da Cruz Filho
AIM: Population aging is a worldwide phenomenon associated with physiological and metabolic changes that contribute to the increased prevalence of risk factors for cardiovascular disease. The phase angle (PA) is a variable calculated by bioelectrical impedance analysis, interpreted as a direct measure of cell stability. The objective of the present study was to investigate the correlation of PA with the anthropometric measures, metabolic profile and the cardiovascular risk estimated by the Global Cardiovascular Risk Score in the elderly population...
January 22, 2018: Geriatrics & Gerontology International
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