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https://www.readbyqxmd.com/read/28550416/optimal-suture-anchor-direction-in-arthroscopic-lateral-ankle-ligament-repair
#1
Ichiro Yoshimura, Tomonobu Hagio, Masahiro Noda, Kazuki Kanazawa, So Minokawa, Takuaki Yamamoto
PURPOSE: In this study, the distance between the insertion point of the suture anchors and posterior surface of the fibula during arthroscopic lateral ankle ligament repair was investigated on computed tomography (CT) images. The hypothesis of this study was that there is an optimal insertional direction of the suture anchor to avoid anchor-related complications. METHODS: One hundred eleven ankles of 98 patients who had undergone three-dimensional CT scans for foot or ankle disorders without deformity of the fibula were assessed (59 males, 52 females; median age 25...
May 26, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28550358/visualization-of-a-cam-type-femoroacetabular-impingement-while-squatting-using-image-matching-techniques-a-case-report
#2
Kensei Yoshimoto, Satoshi Hamai, Hidehiko Higaki, Hirotaka Gondoh, Yasuharu Nakashima
The in vivo assessment of the three-dimensional (3D) kinematics of the hip in patients with femoroacetabular impingement (FAI) under weight-bearing conditions has not been previously reported. We evaluated the pre- and postoperative hip kinematics of a 34-year-old man, with a cam-type FAI while squatting, using image-matching techniques with measurement of the rim-neck distance. Post-osteochondroplasty, the α-angle improved from 51.0° to 35.5° and the head-neck offset ratio from 0.04 to 0.23. Coxalgia during squatting disappeared, and the Harris Hip Score improved from 79 to 92 at 1 year post-surgery...
May 27, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28550312/dependence-of-solidification-for-bi2te3-xsex-alloys-on-their-liquid-states
#3
Yuan Yu, Zhan Wu, Oana Cojocaru-Mirédin, Bin Zhu, Xiao-Yu Wang, Na Gao, Zhong-Yue Huang, Fang-Qiu Zu
The resistivity versus temperature (ρ-T) behaviours of liquid n-type Bi2Te3-x Se x (x = 0.3, 0.45 and 0.6) alloys are explored up to 1050 °C. A clear hump is observed on all ρ-T curves of the three studied Bi2Te3-x Se x melts during the heating process, which suggests that a temperature-induced liquid-liquid structural transition takes place in the melts. Based on this information, the solidification behaviours and microstructures of the alloys with different liquid states are investigated. The samples that experienced liquid structural transition show that the nucleation and growth undercooling degrees are conspicuously enlarged and the solidification time is shortened...
May 26, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28550176/mechanical-behavior-and-matrisome-gene-expression-in-aneurysm-prone-thoracic-aorta-of-newborn-lysyl-oxidase-knockout-mice
#4
Marius Catalin Staiculescu, Jungsil Kim, Robert P Mecham, Jessica Wagenseil
Mutations in lysyl oxidase (LOX) are associated with thoracic aortic aneurysm and dissection (TAAD). Mice that do not express Lox (Lox(-/-)) die soon after birth and have 60% and 40% reductions in elastin- and collagen-specific crosslinks, respectively. LOX inactivation could also change the expression of secreted factors, structural matrix, and matrix-associated proteins that constitute the aortic matrisome. We hypothesize that the absence of Lox will change the mechanical behavior of the aortic wall due to reduced elastin and collagen crosslinking and alter the expression levels of matrisome and smooth muscle cell (SMC) genes in a vascular location-specific manner...
May 26, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28549902/does-corrective-spine-surgery-improve-the-standing-balance-in-patients-with-adult-spinal-deformity
#5
Mitsuru Yagi, Hideaki Ohne, Shinjiro Kaneko, Masafumi Machida, Yoshiyuki Yato, Takashi Asazuma
BACKGROUND CONTEXT: The effect of corrective spine surgery on standing stability in adult spinal deformity (ASD) has not been fully documented. PURPOSE: To compare pre- and postoperative standing balance and posture in patients with ASD. STUDY DESIGN/SETTING: Prospective case series. PATIENT SAMPLE: Standing balance before and after corrective spine surgery was compared in 35 consecutive female patients with ASD (65...
May 23, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28549642/the-role-of-the-features-of-facet-joint-angle-in-the-development-of-isthmic-spondylolisthesis-in-young-male-patients-with-l5-s1-isthmic-spondylolisthesis
#6
Ahmet Eroglu
OBJECTIVE: To investigate the facet tropism and its role in the development of lumbar isthmic spondylolisthesis (IS) in young male adults. MATERIAL AND METHOD: From March 2013 to May 2016, bilateral facet joint angles were measured axially at the level of L3-4, L4-5 and L5-S1 in the lumbar computerized tomography (CT) of the 97 individuals (46 patients with IS and 51 control) aged between 20 and 29. Classification was as follows: If the difference between the two corresponding facet angles is <6°, no tropism; if it is 6°-12°, moderate tropism; and if it is >12°, severe tropism...
May 23, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28549598/twist-limits-for-late-twisting-double-somersaults-on-trampoline
#7
M R Yeadon, M J Hiley
An angle-driven computer simulation model of aerial movement was used to determine the maximum amount of twist that could be produced in the second somersault of a double somersault on trampoline using asymmetrical movements of the arms and hips. Lower bounds were placed on the durations of arm and hip angle changes based on performances of a world trampoline champion whose inertia parameters were used in the simulations. The limiting movements were identified as the largest possible odd number of half twists for forward somersaulting takeoffs and even number of half twists for backward takeoffs...
May 16, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28549518/ganglion-cell-inner-plexiform-layer-change-detected-by-optical-coherence-tomography-indicates-progression-in-advanced-glaucoma
#8
Joong Won Shin, Kyung Rim Sung, Gary C Lee, Mary K Durbin, Daniel Cheng
PURPOSE: To examine the performance of Guided Progression Analysis (GPA; Carl Zeiss Meditec, Dublin, CA) in spectral-domain optical coherence tomography (OCT) in detecting progressive thinning of ganglion cell-inner plexiform layer (GCIPL) and retinal nerve fiber layer (RNFL) in glaucoma. DESIGN: Longitudinal, observational study. PARTICIPANTS: A total of 196 eyes of 123 primary open-angle glaucoma patients (mean follow-up, 5.0 years). METHODS: Macular GCIPL and peripapillary RNFL thicknesses were measured by Cirrus HD-OCT (Zeiss, Dublin, CA), and progressive GCIPL and RNFL thinning were assessed by GPA...
May 23, 2017: Ophthalmology
https://www.readbyqxmd.com/read/28549441/dynamic-arm-study-quantitative-description-of-upper-extremity-function-and-activity-of-boys-and-men-with-duchenne-muscular-dystrophy
#9
Mariska M H P Janssen, Jaap Harlaar, Bart Koopman, Imelda J M de Groot
BACKGROUND: Therapeutic management of upper extremity (UE) function of boys and men with Duchenne Muscular Dystrophy (DMD) requires sensitive and objective assessment. Therefore, we aimed to measure physiologic UE function of healthy subjects and DMD patients in different disease stages, and to evaluate the relation between these physiologic measures and functional UE scales. METHODS: Twenty-three DMD patients and twenty healthy controls (7-23 years) participated in this explorative case-control study...
May 26, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28549406/supramalleolar-osteotomy-for-tibial-component-malposition-in-total-ankle-replacement
#10
Manja Deforth, Nicola Krähenbühl, Lukas Zwicky, Markus Knupp, Beat Hintermann
BACKGROUND: Persistent pain despite a total ankle replacement is not uncommon. A main source of pain may be an insufficiently balanced ankle. An alternative to the revision of the existing arthroplasty is the use of a corrective osteotomy of the distal tibia, above the stable implant. This strictly extraarticular procedure preserves the integrity of the replaced joint. The aim of this study was to review a series of patients in whom a corrective supramalleolar osteotomy was performed to realign a varus misaligned tibial component in total ankle replacement...
May 1, 2017: Foot & Ankle International
https://www.readbyqxmd.com/read/28549354/the-facespan-the-perceptual-span-for-face-recognition
#11
Michael Papinutto, Junpeng Lao, Meike Ramon, Roberto Caldara, Sébastien Miellet
In reading, the perceptual span is a well-established concept that refers to the amount of information that can be read in a single fixation. Surprisingly, despite extensive empirical interest in determining the perceptual strategies deployed to process faces and an ongoing debate regarding the factors or mechanism(s) underlying efficient face processing, the perceptual span for faces-the Facespan-remains undetermined. To address this issue, we applied the gaze-contingent Spotlight technique implemented in an old-new face recognition paradigm...
May 1, 2017: Journal of Vision
https://www.readbyqxmd.com/read/28549338/fast-backprojection-based-reconstruction-of-spectral-spatial-epr-images-from-projections-with-the-constant-sweep-of-a-magnetic-field
#12
Denis A Komarov, Hiroshi Hirata
In this paper, we introduce a procedure for the reconstruction of spectral-spatial EPR images using projections acquired with the constant sweep of a magnetic field. The application of a constant field-sweep and a predetermined data sampling rate simplifies the requirements for EPR imaging instrumentation and facilitates the backprojection-based reconstruction of spectral-spatial images. The proposed approach was applied to the reconstruction of a four-dimensional numerical phantom and to actual spectral-spatial EPR measurements...
May 17, 2017: Journal of Magnetic Resonance
https://www.readbyqxmd.com/read/28549090/sigma-1-receptor-regulates-mitochondrial-function-in-glucose-and-oxygen-deprived-retinal-ganglion-cells
#13
Dorette Z Ellis, Linya Li, Yong Park, Shaoqing He, Brett Mueller, Thomas Yorio
Purpose: Understanding the role of mitochondria in retinal ganglion cells (RGCs) is relevant to human disease as studies have shown mitochondrial abnormalities in primary open-angle glaucoma patients. This study seeks to determine the effects of the sigma-1 receptor (σ-1r) and its agonists on mitochondrial function in oxygen- and glucose- deprived (OGD) purified neonatal RGCs. Methods: Retinal ganglion cells were isolated from rat pups and subjected to OGD in varying conditions in the presence or absence of σ-1r agonist and antagonist and following addition of an AAV2-σ-1r vector that was used to increase σ-1r expression...
May 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28548972/assessment-of-adult-malnutrition-and-prognosis-with-bioelectrical-impedance-analysis-phase-angle-and-impedance-ratio
#14
Henry C Lukaski, Ursula G Kyle, Jens Kondrup
PURPOSE OF REVIEW: Malnutrition affects prognosis in many groups of patients. Although screening tools are available to identify adults at risk for poor nutritional status, a need exists to improve the assessment of malnutrition by identifying the loss of functional tissues that can lead to frailty, compromised physical function, and increased risk of morbidity and mortality, particularly among hospitalized and ill patients and older adults. Bioimpedance analysis (BIA) offers a practical approach to identify malnutrition and prognosis by assessing whole-body cell membrane quality and depicting fluid distribution for an individual...
May 25, 2017: Current Opinion in Clinical Nutrition and Metabolic Care
https://www.readbyqxmd.com/read/28548908/effect-of-end-segment-on-physicochemical-properties-and-platelet-compatibility-of-poly-propylene-glycol-initiated-poly-methyl-methacrylate
#15
Chihiro Fukuda, Chie Yahata, Takuya Kinoshita, Takafumi Watanabe, Hideo Tsukamoto, Akira Mochizuki
It is well known that polyether-based copolymers have good blood compatibility, although many mechanisms have been proposed to explain their favorable performance. Our objective in carrying out the present study was to obtain a better understanding of the effect of the (poly)ether segment on blood compatibility. Therefore, we synthesized poly(propylene glycol) (PPG)-based initiators for atom transfer polymerization, where the number of propylene glycol (PG) units in the PPG (Pn(PG) was varied from 1 to 94. Methyl methacrylate (MMA) was polymerized using the initiators, resulting in the formation of polyMMAs with a PG-based ether part at the polymer terminal...
May 26, 2017: Journal of Biomaterials Science. Polymer Edition
https://www.readbyqxmd.com/read/28548698/novel-porcine-experimental-model-of-severe-progressive-thoracic-scoliosis-with-compensatory-curves-induced-by-interpedicular-bent-rigid-temporary-tethering
#16
Carlos Barrios, José Miguel Lloris, Juan Alonso, Borja Maruenda, Jesús Burgos, Rafael Llombart-Blanco, Luis Gil, Viviana Bisbal
Using flexible tethering techniques, porcine models of experimental scoliosis have shown scoliotic curves with vertebral wedging but very limited axial rotation. The aim of this experimental work was to induce a severe progressive scoliosis in a growing porcine model for research purposes. A unilateral spinal bent rigid tether was anchored to two ipsilateral pedicle screws in eight pigs. The spinal tether was removed after 8 weeks. Ten weeks later, the animals were sacrificed. Conventional radiographs and 3D CT-scans were taken to evaluate changes in the alignment of the thoracic spine...
May 26, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28548531/hunting-the-gluon-orbital-angular-momentum-at-the-electron-ion-collider
#17
Xiangdong Ji, Feng Yuan, Yong Zhao
Applying the connection between the parton Wigner distribution and orbital angular momentum (OAM), we investigate the probe of the gluon OAM in hard scattering processes at the planned electron-ion collider. We show that the single longitudinal target-spin asymmetry in the hard diffractive dijet production is very sensitive to the gluon OAM distribution. The associated spin asymmetry leads to a characteristic azimuthal angular correlation of sin(ϕ_{q}-ϕ_{Δ}), where ϕ_{Δ} and ϕ_{q} are the azimuthal angles of the proton momentum transfer and the relative transverse momentum between the quark-antiquark pair...
May 12, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28548529/resonances-in-the-field-angle-resolved-thermal-conductivity-of-cecoin_-5
#18
Duk Y Kim, Shi-Zeng Lin, Franziska Weickert, Eric D Bauer, Filip Ronning, J D Thompson, Roman Movshovich
The thermal conductivity measurement in a rotating magnetic field is a powerful probe of the structure of the superconducting energy gap. We present high-precision measurements of the low-temperature thermal conductivity in the unconventional heavy-fermion superconductor CeCoIn_{5}, with the heat current J along the nodal [110] direction of its d_{x^{2}-y^{2}} order parameter and the magnetic field up to 7 T rotating in the ab plane. In contrast to the smooth oscillations found previously for J∥[100], we observe a sharp resonancelike peak in the thermal conductivity when the magnetic field is also in the [110] direction, parallel to the heat current...
May 12, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28548515/velocity-fluctuations-in-sedimenting-brownian-particles
#19
Johannes Möller, Theyencheri Narayanan
We report a gradual transition of dynamics in sedimenting suspensions of charge stabilized Brownian particles prior to the onset of the macroscopic sedimentation front. Using multispeckle ultrasmall-angle x-ray photon correlation spectroscopy (USA-XPCS), we show that well-defined advective motions dominate the colloid dynamics during the early stages of sedimentation. With elapsing time, these advective currents decay and diffusive motions become the dominating contribution in the dynamics. Probing the temporal development of these fluctuations at smaller Peclet numbers (<1) provides a new perspective for the mechanism determining the transient nature of velocity fluctuations in sedimentation and demonstrates new experimental capabilities enabled by multispeckle USA-XPCS...
May 12, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28548503/modeling-evaporation-and-particle-assembly-in-colloidal-droplets
#20
Mingfei Zhao, Xin Yong
Evaporation-induced assembly of nanoparticles in a drying droplet is of great importance in many engineering applications, including printing, coating and thin film processing. The investigation of particle dynamics in evaporating droplets can provide fundamental hydrodynamic insight for revealing the processing-structure relationship in the particle self-organization induced by solvent evaporation. We develop a free-energy-based multiphase lattice Boltzmann method coupled with Brownian dynamics to simulate evaporating colloidal droplets on solid substrates with specified wetting properties...
May 26, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
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