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https://www.readbyqxmd.com/read/29154234/activity-and-quality-of-life-after-total-hip-arthroplasty
#1
Anna Świtoń, Ewa Wodka-Natkaniec, Łukasz Niedźwiedzki, Tadeusz Gaździk, Tadeusz Niedźwiedzki
BACKGROUND: Coxarthrosis is a chronic musculoskeletal condition that causes severe pain and considerable limi-tation of the patient's motor performance. Total hip arthroplasty is one of the most common and effective methods used in the treatment of advanced degenerative changes. The aim of the present study was to evaluate the activity and quality of life of patients after unilateral total hip arthroplasty. MATERIAL AND METHODS: The study was conducted in a group of 189 patients who had undergone unilateral total hip arthroplasty...
October 31, 2017: Ortopedia, Traumatologia, Rehabilitacja
https://www.readbyqxmd.com/read/29149727/surface-modification-of-electrospun-poly-l-lactic-acid-scaffolds-by-reactive-magnetron-sputtering
#2
E N Bolbasov, P V Maryin, K S Stankevich, A I Kozelskaya, E V Shesterikov, Yu I Khodyrevskaya, M V Nasonova, D K Shishkova, Yu A Kudryavtseva, Y G Anissimov, S I Tverdokhlebov
In this study, we modified the surface of bioresorbable electrospun poly-(l-lactic) acid (PLLA) scaffolds by reactive magnetron sputtering of a titanium target under a nitrogen atmosphere. We examined the influence of the plasma treatment time on the structure and properties of electrospun PLLA scaffolds using SEM, XRF, FTIR, XRD, optical goniometry, and mechanical testing. It was observed that the coating formed did not change physicomechanical properties of electrospun PLLA scaffolds and simultaneously, increased their hydrophilicity...
November 12, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29140194/validity-of-a-smartphone-application-for-measuring-ankle-plantar-flexion
#3
Robert W Cox, Rodrigo E Martinez, Russell T Baker, Lindsay W Larkins
CONTEXT: Range of motion (ROM) is a component of a physical exam used in the diagnostic and rehabilitative process. Following ankle injury and/or during research, it is common to measure plantarflexion with a universal goniometer. The ease and availability of digital inclinometers created as applications for smartphones, has led to an increase in using this method of ROM assessment. Smartphone applications have been validated as alternatives to inclinometer measurements in the knee; however, this application has not been validated for plantarflexion in the ankle...
November 15, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/29140074/facile-and-versatile-strategy-for-construction-of-anti-inflammatory-and-antibacterial-surfaces-with-polydopamine-mediated-liposomes-releasing-dexamethasone-and-minocycline-for-potential-implants-applications
#4
Xiao Xu, Lixin Wang, Zuyuan Luo, Yaofeng Ni, Haitao Sun, Xiang Gao, Yongliang Li, Siqi Zhang, Yan Li, Shicheng Wei
Reducing early nonbacterial inflammation induced by implanted materials and infection resulting from bacterial contamination around the implant-abutment interface could greatly accelerate implant osseointegration and reduce implant failure, which would be of clinical significance. In this study, we developed a facile and versatile strategy for the construction of anti-inflammatory and antibacterial surfaces on implants, such as orthopedic/dental implants. Briefly, the surfaces of polystyrene (PS) culture plates were first coated with polydopamine and then decorated with dexamethasone plus minocycline-loaded liposomes (Dex/Mino liposomes), which was confirmed by contact angle goniometry, X-ray photoelectron spectroscopy, and fluorescence microscopy...
November 15, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29122688/lower-limb-lengths-and-angles-in-children-older-than-six-years-reliability-and-reference-values-by-eos-%C3%A2-stereoradiography
#5
V Rampal, P-Y Rohan, A Assi, I Ghanem, O Rosello, A-L Simon, E Gaumetou, V Merzoug, W Skalli, P Wicart
BACKGROUND: Lower-limb alignment in children is classically assessed clinically or based on conventional radiography, which is associated with projection bias. Low-dose biplanar radiography was described recently as an alternative to conventional imaging. The primary objective of this study was to assess the reliability of length and angle values inferred from 3D reconstructions in children seen in everyday practice. The secondary objective was to obtain reference values for goniometry parameters in children...
November 6, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/29096664/kinetic-gait-analysis-in-english-bulldogs
#6
Andrés Sebastian Aristizabal Escobar, Alexandre Navarro Alves de Souza, Ana Carolina Brandão de Campos Fonseca Pinto, Julia Maria Matera
BACKGROUND: Canine breed conformation may interfere with locomotion and may predispose to orthopedic disease. Bulldogs have a high incidence of orthopedic diseases such as hip dysplasia. Kinetic gait analysis provides an objective way to assess and analyze locomotion. The aim of this study was to study the vertical forces of English Bulldogs during walk using a pressure sensitive walkway. We hypothesize that Bulldogs affected by orthopedic diseases have decreased weight bearing and asymmetric locomotion in the limbs despite having mild to no sings during clinical examination...
November 2, 2017: Acta Veterinaria Scandinavica
https://www.readbyqxmd.com/read/29051013/pericellular-interphotoreceptor-matrix-dictates-outer-retina-critical-surface-tension
#7
Federico Gonzalez-Fernandez, Mark Fornalik, Mary Alice Garlipp, Priscilla Gonzalez-Fernandez, Dongjin Sung, Anne Meyer, Robert Baier
Retinal detachments create two pathological surfaces, the surface of the outer neural retinal, and an apical retinal-pigmented epithelium (RPE) surface. The physicochemical properties of these two new surfaces are poorly understood. At a molecular level little is known how detachments form, how to optimize reattachment, or prevent extension of the detachment. A major limitation is lack of information about the biophysical consequences of the retina-RPE separation. The primary challenge is determining the molecular properties of the pathological interface surfaces...
October 16, 2017: Experimental Eye Research
https://www.readbyqxmd.com/read/29046834/application-of-visible-light-photosensitization-to-form-alkyl-radical-derived-thin-films-on-gold
#8
Rashanique D Quarels, Xianglin Zhai, Neepa Kuruppu, Jenny K Hedlund, Ashley A Ellsworth, Amy V Walker, Jayne C Garno, Justin R Ragains
Visible-light irradiation of phthalimide esters in the presence of the photosensitizer [Ru(bpy)3](2+) and the stoichiometric reducing agent benzyl nicotinamide results in the formation of alkyl radicals under mild conditions. This approach to radical generation has proven useful for the synthesis of small organic molecules. Herein, we demonstrate for the first time the visible-light photosensitized deposition of robust alkyl thin films on Au surfaces using phthalimide esters as the alkyl radical precursors...
2017: Beilstein Journal of Nanotechnology
https://www.readbyqxmd.com/read/29037822/how-does-level-and-type-of-experience-affect-measurement-of-joint-range-of-motion
#9
Russell R Russo, Matthew B Burn, Sabir K Ismaily, Brayden J Gerrie, Shuyang Han, Jerry Alexander, Christopher Lenherr, Philip C Noble, Joshua D Harris, Patrick C McCulloch
OBJECTIVES: Comparison of range of motion measurements by 3 types of investigators with different levels and types of training using three different measurement techniques. The study hypothesis was that the accuracy and precision of range of motion measurements would vary based on (1) the level and type of experience of the investigator and (2) the measurement technique used. DESIGN/SETTING: Descriptive laboratory study. PARTICIPANTS: Ten fresh frozen cadavers (20 upper and 20 lower extremities)...
October 13, 2017: Journal of Surgical Education
https://www.readbyqxmd.com/read/28967945/nanoscale-patterning-of-self-assembled-monolayer-sam-functionalised-substrates-with-single-molecule-contact-printing
#10
M Sajfutdinow, K Uhlig, A Prager, C Schneider, B Abel, D M Smith
Defined arrangements of individual molecules are covalenty connected ("printed") onto SAM-functionalised gold substrates with nanometer resolution. Substrates were initially pre-functionlised by coating with 3,3'-dithiodipropionic acid (DTPA) to form a self-assembled monolayer (SAM), which was characterised by atomic force microscopy (AFM), contact angle goniometry, cyclic voltammetry and surface plasmon resonance (SPR) spectroscopy. Pre-defined "ink" patterns displayed on DNA origami-based single-use carriers ("stamp") were covalently conjugated to the SAM using 1-ethyl-3-(3-dimethylamino-propyl)carbodiimide (EDC) and N-hydroxy-succinimide (NHS)...
October 12, 2017: Nanoscale
https://www.readbyqxmd.com/read/28966703/effects-of-different-number-of-sets-of-resistance-training-on-flexibility
#11
Thalita B Leite, Pablo B Costa, Richard D Leite, Jefferson S Novaes, Steven J Fleck, Roberto Simão
The aim of this study was to investigate the effects of six months of training with three different number of sets of resistance training on flexibility in young men. Forty-seven men (mean ± SD age = 24 ± 1yrs; body mass = 79.39 ± 9.12 kg; height = 174.5 ± 5.6 cm) were randomly divided into three training groups performing either one set (G1S), three sets (G3S), or five sets (G5S) of all exercises in a resistance training session or a control group (CG). All groups were assessed pre- and post-training for Sit-and-Reach test and range of motion of 10 joints using goniometry...
2017: International Journal of Exercise Science
https://www.readbyqxmd.com/read/28946577/effect-of-task-specific-training-and-wrist-fingers-extension-splint-on-hand-joints-range-of-motion-and-function-after-stroke
#12
Mohamed E Khallaf, Mariam A Ameer, Eman E Fayed
BACKGROUND: Most stroke patients experience hand impairments that can result in persistent limitations in daily activities. OBJECTIVE: This study aimed at estimating the immediate and retention effects of task specific training and wrist/fingers extension splint on hand joints range of motion and function after stroke. METHODS: Twenty-four right handed patients with first ever stroke represented the sample of the study. The participants were randomly assigned into two equal groups...
2017: NeuroRehabilitation
https://www.readbyqxmd.com/read/28920673/work-function-control-of-germanium-through-carborane-carboxylic-acid-surface-passivation
#13
Andrew C Serino, Mary E Anderson, Liban M A Saleh, Rafal M Dziedzic, Harrison Mills, Liv K Heidenreich, Alexander M Spokoyny, Paul S Weiss
Self-assembled monolayers (SAMs) of carborane isomers with different dipole moments passivate germanium to modulate surface work function while maintaining chemical environment and surface energy. To identify head groups capable of monolayer formation on germanium surfaces, we studied thiol-, hydroxyl-, and carboxyl-terminated carboranes. These films were successfully formed with carboxylic acid head groups instead of the archetypal thiol, suggesting that the carborane cluster significantly affects headgroup reactivity...
October 11, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28902253/bacterial-adhesion-on-conventional-and-self-ligating-metallic-brackets-after-surface-treatment-with-plasma-polymerized-hexamethyldisiloxane
#14
Rogerio Amaral Tupinambá, Cristiane Aparecida de Assis Claro, Cristiane Aparecida Pereira, Celestino José Prudente Nobrega, Ana Paula Rosifini Alves Claro
Introduction: Plasma-polymerized film deposition was created to modify metallic orthodontic brackets surface properties in order to inhibit bacterial adhesion. Methods: Hexamethyldisiloxane (HMDSO) polymer films were deposited on conventional (n = 10) and self-ligating (n = 10) stainless steel orthodontic brackets using the Plasma-Enhanced Chemical Vapor Deposition (PECVD) radio frequency technique. The samples were divided into two groups according to the kind of bracket and two subgroups after surface treatment...
July 2017: Dental Press Journal of Orthodontics
https://www.readbyqxmd.com/read/28887986/biomineralized-diamond-like-carbon-films-with-incorporated-titanium-dioxide-nanoparticles-improved-bioactivity-properties-and-reduced-biofilm-formation
#15
F S Lopes, J R Oliveira, J Milani, L D Oliveira, J P B Machado, V J Trava-Airoldi, A O Lobo, F R Marciano
Recently, the development of coatings to protect biomedical alloys from oxidation, passivation and to reduce the ability for a bacterial biofilm to form after implantation has emerged. Diamond-like carbon films are commonly used for implanted medical due to their physical and chemical characteristics, showing good interactions with the biological environment. However, these properties can be significantly improved when titanium dioxide nanoparticles are included, especially to enhance the bactericidal properties of the films...
December 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28884315/is-digital-photography-an-accurate-and-precise-method-for-measuring-range-of-motion-of-the-hip-and-knee
#16
Russell R Russo, Matthew B Burn, Sabir K Ismaily, Brayden J Gerrie, Shuyang Han, Jerry Alexander, Christopher Lenherr, Philip C Noble, Joshua D Harris, Patrick C McCulloch
BACKGROUND: Accurate measurements of knee and hip motion are required for management of musculoskeletal pathology. The purpose of this investigation was to compare three techniques for measuring motion at the hip and knee. The authors hypothesized that digital photography would be equivalent in accuracy and show higher precision compared to the other two techniques. METHODS: Using infrared motion capture analysis as the reference standard, hip flexion/abduction/internal rotation/external rotation and knee flexion/extension were measured using visual estimation, goniometry, and photography on 10 fresh frozen cadavers...
September 7, 2017: Journal of Experimental Orthopaedics
https://www.readbyqxmd.com/read/28875099/surface-functionalization-of-3d-printed-plastics-via-initiated-chemical-vapor-deposition
#17
Christine Cheng, Malancha Gupta
3D printing is a useful fabrication technique because it offers design flexibility and rapid prototyping. The ability to functionalize the surfaces of 3D-printed objects allows the bulk properties, such as material strength or printability, to be chosen separately from surface properties, which is critical to expanding the breadth of 3D printing applications. In this work, we studied the ability of the initiated chemical vapor deposition (iCVD) process to coat 3D-printed shapes composed of poly(lactic acid) and acrylonitrile butadiene styrene...
2017: Beilstein Journal of Nanotechnology
https://www.readbyqxmd.com/read/28872411/smartphone-photography-utilized-to-measure-wrist-range-of-motion
#18
Eric R Wagner, Megan Conti Mica, Alexander Y Shin
The purpose was to determine if smartphone photography is a reliable tool in measuring wrist movement. Smartphones were used to take digital photos of both wrists in 32 normal participants (64 wrists) at extremes of wrist motion. The smartphone measurements were compared with clinical goniometry measurements. There was a very high correlation between the clinical goniometry and smartphone measurements, as the concordance coefficients were high for radial deviation, ulnar deviation, wrist extension and wrist flexion...
January 1, 2017: Journal of Hand Surgery, European Volume
https://www.readbyqxmd.com/read/28861038/alleviation-of-motor-impairments-in-patients-with-cerebral-palsy-acute-effects-of-whole-body-vibration-on-stretch-reflex-response-voluntary-muscle-activation-and-mobility
#19
Anne Krause, Eckhard Schönau, Albert Gollhofer, Ibrahim Duran, Anja Ferrari-Malik, Kathrin Freyler, Ramona Ritzmann
INTRODUCTION: Individuals suffering from cerebral palsy (CP) often have involuntary, reflex-evoked muscle activity resulting in spastic hyperreflexia. Whole-body vibration (WBV) has been demonstrated to reduce reflex activity in healthy subjects, but evidence in CP patients is still limited. Therefore, this study aimed to establish the acute neuromuscular and kinematic effects of WBV in subjects with spastic CP. METHODS: 44 children with spastic CP were tested on neuromuscular activation and kinematics before and immediately after a 1-min bout of WBV (16-25 Hz, 1...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28856053/microscope-objective-based-4%C3%AF-spectroscopic-tissue-scattering-goniometry
#20
Z J Simmons, J D Rogers
The measurement of optical scattering as a function of angle, goniometry, can provide a wealth of information about tissue. The goniometry technique described here measures the intensity profile at the pupil planes of two microscope objectives with a scattering sample between them. The maximum observable scattering angle is extended by employing off-axis illumination. This configuration permits several advantages including: i) rapid measurement of scattering into 4π sr to characterize the entire scattering phase function in isotropic tissue, ii) sensitivity to axially asymmetric scattering from anisotropic fibrous tissue, iii) selective interrogation of small regions within spatially inhomogenous tissue, iv) concurrent measurement of scattering coefficient μs , and v) measurement of wavelength dependent scattering properties via spectrally tunable source...
August 1, 2017: Biomedical Optics Express
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