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https://www.readbyqxmd.com/read/28882753/knee-internal-contact-force-in-a-varus-malaligned-phenotype-in-knee-osteoarthritis-koa
#1
A Dell'Isola, S L Smith, M S Andersen, M Steultjens
PURPOSE: Multiple phenotypes characterized by different disease mechanisms have been hypothesized to explain the large variability in the knee osteoarthritis (KOA) population. The purpose of this study was: to estimate and compare the medial and lateral knee compression forces (CF) during gait of three subgroups of KOA subjects characterized by different alignment and cartilage disruption patterns. METHODS: A secondary data analysis was conducted on a sample of 39 KOA subjects and 18 controls (C)...
September 4, 2017: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/28844565/within-between-session-reliability-and-agreement-of-lumbopelvic-kinematics-in-the-sagittal-plane-during-functional-movement-control-tasks-in-healthy-persons
#2
Thomas Matheve, Liesbet De Baets, Fabian Rast, Christoph Bauer, Annick Timmermans
A lack of adequate lumbopelvic movement control has been suggested as an underlying mechanism contributing to the development and persistence of low back pain and lower limb pathologies. The purpose of this study was to assess the within and between session reliability (i.e. the ability to discriminate between subjects), and the agreement (i.e. whether scores are identical on repeated measures) of lumbopelvic kinematics in the sagittal plane during functional movement control tasks. Kinematics were measured with a portable inertial measurement unit system...
August 24, 2017: Musculoskeletal Science & Practice
https://www.readbyqxmd.com/read/28839353/strain-measurements-of-the-tibial-insert-of-a-knee-prosthesis-using-a-knee-motion-simulator
#3
Toshihiro Sera, Yuya Iwai, Takaharu Yamazaki, Tetsuya Tomita, Hideki Yoshikawa, Hisahi Naito, Takeshi Matsumoto, Masao Tanaka
OBJECTIVE: The longevity of a knee prosthesis is influenced by the wear of the tibial insert due to its posture and movement. In this study, we assumed that the strain on the tibial insert is one of the main reasons for its wear and investigated the influence of the knee varus-valgus angles on the mechanical stress of the tibial insert. METHODS: Knee prosthesis motion was simulated using a knee motion simulator based on a parallel-link six degrees-of-freedom actuator and the principal strain and pressure distribution of the tibial insert were measured...
December 2017: Journal of Orthopaedics
https://www.readbyqxmd.com/read/28817701/effect-of-exoskeletal-joint-constraint-and-passive-resistance-on-metabolic-energy-expenditure-implications-for-walking-in-paraplegia
#4
Sarah R Chang, Rudi Kobetic, Ronald J Triolo
An important consideration in the design of a practical system to restore walking in individuals with spinal cord injury is to minimize metabolic energy demand on the user. In this study, the effects of exoskeletal constraints on metabolic energy expenditure were evaluated in able-bodied volunteers to gain insight into the demands of walking with a hybrid neuroprosthesis after paralysis. The exoskeleton had a hydraulic mechanism to reciprocally couple hip flexion and extension, unlocked hydraulic stance controlled knee mechanisms, and ankles fixed at neutral by ankle-foot orthoses...
2017: PloS One
https://www.readbyqxmd.com/read/28693758/the-u-s-online-news-coverage-of-mammography-based-on-a-google-news-search
#5
REVIEW
Leng Leng Young Lin, Andrew B Rosenkrantz
RATIONALE AND OBJECTIVES: To characterize online news coverage relating to mammography, including articles' stance toward screening mammography. MATERIALS AND METHODS: Google News was used to search U.S. news sites over a 9-year period (2006-2015) based on the search terms "mammography" and "mammogram." The top 100 search results were recorded. Identified articles were manually reviewed. RESULTS: The top 100 news articles were from the following sources: local news outlet (50%), national news outlet (24%), nonimaging medical source (13%), entertainment or culture news outlet (6%), business news outlet (4%), peer-reviewed journal (1%), and radiology news outlet (1%)...
July 7, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28662626/expert-discussion-on-taking-a-spiritual-history
#6
Piret Paal, Eckhard Frick, Traugott Roser, Guy Jobin
This article elaborates on the hazards of spiritual history taking. It provides expert insights to consider before entering the field. In summer 2012, a group of spiritual care experts were invited to discuss the complexity of taking spiritual histories in a manner of hermeneutic circle. Thematic analysis was applied to define the emerging themes. The results demonstrate that taking a spiritual history is a complex and challenging task, requiring a number of personal qualities of the interviewer, such as 'being present', 'not only hearing, but listening', 'understanding the message beyond the words uttered', and 'picking up the words to respond'...
January 2017: Journal of Palliative Care
https://www.readbyqxmd.com/read/28644980/making-power-visible-doing-theatre-based-status-work-with-nursing-students
#7
Steven S Taylor, Rosemary A Taylor
As part of a senior leadership class in an undergraduate baccalaureate nursing program in the northeastern United States, we conducted an experiential, theater-based workshop designed to increase student awareness of the micro-dynamics of power and the enactment of status in their day-to-day lives. These exercises allowed student participants to embody status and power and understand it in ways that they did not after simply completing assigned readings. At the conclusion of the workshop the participants were asked to reflect on their status habits and the consequences of these habits in a single hand-written page...
September 2017: Nurse Education in Practice
https://www.readbyqxmd.com/read/28566397/mediolateral-force-distribution-at-the-knee-joint-shifts-across-activities-and-is-driven-by-tibiofemoral-alignment
#8
I Kutzner, A Bender, J Dymke, G Duda, P von Roth, G Bergmann
AIMS: Tibiofemoral alignment is important to determine the rate of progression of osteoarthritis and implant survival after total knee arthroplasty (TKA). Normally, surgeons aim for neutral tibiofemoral alignment following TKA, but this has been questioned in recent years. The aim of this study was to evaluate whether varus or valgus alignment indeed leads to increased medial or lateral tibiofemoral forces during static and dynamic weight-bearing activities. PATIENTS AND METHODS: Tibiofemoral contact forces and moments were measured in nine patients with instrumented knee implants...
June 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28484695/online-information-on-antioxidants-information-quality-indicators-commercial-interests-and-ranking-by-google
#9
Romaan Aslam, Daniel Gibbons, Pietro Ghezzi
The idea that antioxidant supplements can prevent or cure many diseases is extremely popular. To study the public understanding of antioxidants on the Web, we searched the term "antioxidants" in http://Google.com and analyzed 200 websites in terms of typology (news, commercial, professional, health portal, no-profit or government organization, scientific journals), disease or biological process mentioned (aging, immunity, neurological disease, diabetes, arthritis, etc.), and stance toward antioxidants, whether neutral, positive, or negative...
2017: Frontiers in Public Health
https://www.readbyqxmd.com/read/28445855/speed-dependent-effects-of-laterally-wedged-insoles-on-gait-biomechanics-in-healthy-subjects
#10
Felix Kluge, Sebastian Krinner, Matthias Lochmann, Bjoern M Eskofier
Laterally wedged insoles have been shown to be effective for the reduction of the knee adduction moment and other biomechanical variables that are associated with the pathogenesis of knee osteoarthritis. However, inconclusive results such as adverse effects in individual subjects or even no group-wise wedge effects have been presented in different studies and it has been suggested to identify variables that potentially confound the wedge effect. The main objective of this study was the investigation of interaction effects of lateral wedges with walking speed, as different self-selected speeds have mainly been used in previous studies...
April 9, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28417165/comparative-study-of-outcomes-after-ankle-arthrodesis-shows-higher-complication-rates-in-cases-operated-upon-by-general-orthopaedic-surgeons
#11
Krenn Sabine, Albers Sascha, Bock Peter, Mansfield Clemens, Chraim Michel, Trnka Hans-Joerg
INTRODUCTION: A functional assessment of 38 patients after ankle arthrodesis for the evaluation of the necessity of surgeons-specialisation was carried out by means of clinical evaluation and gait analysis after an average follow up of 30 months. METHODS: Scores were used to grade ankle function. Gate analysis was examined to determine the effect of arthrodesis on the ankle in relation to the surgeons' experience. Under conditions of normal daily living, we found significant differences in life quality between patients operated upon by experts in orthopaedic foot and ankle surgery (group A) and patients operated by general orthopaedic surgeons (group B)...
June 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28371703/use-of-neck-torsion-as-a-specific-test-of-neck-related-postural-instability
#12
Katrina Williams, Ahmad Tarmizi, Julia Treleaven
BACKGROUND: Disturbed postural stability in neck pain (NP) is likely due to abnormal cervical afferent function. Several potential causes requires specific diagnostic tests. The neck torsion (head still body rotated) manoeuvre stimulates cervical but not vestibular receptors and identified abnormal cervical afferent input as the cause in patients with NP compared to healthy controls. Comparison between vestibular and NP subjects is now needed. AIMS: To compare individuals with unilateral vestibular loss (UVL), persistent NP and asymptomatic controls...
June 2017: Musculoskeletal Science & Practice
https://www.readbyqxmd.com/read/28223954/a-principle-of-intentionality
#13
Charles K Turner
The mainstream theories and models of the physical sciences, including neuroscience, are all consistent with the principle of causality. Wholly causal explanations make sense of how things go, but are inherently value-neutral, providing no objective basis for true beliefs being better than false beliefs, nor for it being better to intend wisely than foolishly. Dennett (1987) makes a related point in calling the brain a syntactic (procedure-based) engine. He says that you cannot get to a semantic (meaning-based) engine from there...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28214492/youtube-as-a-source-of-patient-information-for-varicose-vein-treatment-options
#14
Trevor M Y Kwok, Animesh A Singla, Kevin Phang, Annie Y S Lau
OBJECTIVE: The purpose of this study was to analyze the quality of content and potential sources of bias in videos available on YouTube pertaining to interventional treatment for varicose veins. METHODS: Searches were performed on YouTube to identify videos pertaining to interventional treatment for varicose veins. Videos that met eligibility criteria were analyzed and rated according to predetermined criteria by two independent assessors, with a third independent assessor to resolve any discrepancy...
March 2017: Journal of Vascular Surgery. Venous and Lymphatic Disorders
https://www.readbyqxmd.com/read/28185981/analysis-of-the-s2-alar-iliac-screw-as-compared-with-the-traditional-iliac-screw-does-it-increase-stability-with-sacroiliac-fixation-of-the-spine
#15
Daniel G Hoernschemeyer, Troy D Pashuck, Ferris M Pfeiffer
BACKGROUND CONTEXT: Arthrodesis of the lumbosacral junction continues to be a challenge in pediatric and adult spinal deformity surgery. PURPOSE: To evaluate the biomechanical rigidity of two types of lumbosacral fixation. Our hypothesis was that the use of S2 alar-iliac (S2AI) fixation will result in statistically similar biomechanical fixation as compared with use of an iliac screw with a 95% confidence interval. STUDY SETTING: Controlled biomechanical laboratory METHODS: Ten human cadaveric lumbosacral specimens were separated into two test groups: (1) S2AI (n=5) and (2) iliac screw (n=5)...
February 6, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28149526/functional-self-assembling-peptide-nanofiber-hydrogel-for-peripheral-nerve-regeneration
#16
Xiaoli Wu, Liumin He, Wen Li, Heng Li, Wai-Man Wong, Seeram Ramakrishna, Wutian Wu
Peripheral nerves are fragile and easily damaged, usually resulting in nervous tissue loss, motor and sensory function loss. Advances in neuroscience and engineering have been significantly contributing to bridge the damage nerve and create permissive environment for axonal regrowth across lesions. We have successfully designed two self-assembling peptides by modifying RADA 16-I with two functional motifs IKVAV and RGD. Nanofiber hydrogel formed when combing the two neutral solutions together, defined as RADA 16-Mix that overcomes the main drawback of RADA16-I associated with low pH...
February 2017: Regenerative Biomaterials
https://www.readbyqxmd.com/read/28103140/avoiding-accidents-at-the-champagne-reception
#17
Giovanni Pezzulo, Pierpaolo Iodice, Francesco Donnarumma, Haris Dindo, Günther Knoblich
Using a lifting and balancing task, we contrasted two alternative views of planning joint actions: one postulating that joint action involves distinct predictions for self and other, the other postulating that joint action involves coordinated plans between the coactors and reuse of bimanual models. We compared compensatory movements required to keep a tray balanced when 2 participants lifted glasses from each other's trays at the same time (simultaneous joint action) and when they took turns lifting (sequential joint action)...
March 2017: Psychological Science
https://www.readbyqxmd.com/read/28094763/measuring-the-effect-of-femoral-malrotation-on-knee-joint-biomechanics-for-total-knee-arthroplasty-using-computational-simulation
#18
K-T Kang, Y-G Koh, J Son, O-R Kwon, C Baek, S H Jung, K K Park
OBJECTIVES: Malrotation of the femoral component can result in post-operative complications in total knee arthroplasty (TKA), including patellar maltracking. Therefore, we used computational simulation to investigate the influence of femoral malrotation on contact stresses on the polyethylene (PE) insert and on the patellar button as well as on the forces on the collateral ligaments. MATERIALS AND METHODS: Validated finite element (FE) models, for internal and external malrotations from 0° to 10° with regard to the neutral position, were developed to evaluate the effect of malrotation on the femoral component in TKA...
November 2016: Bone & Joint Research
https://www.readbyqxmd.com/read/28033477/the-stationary-gaze-task-should-not-be-systematically-used-as-the-control-task-in-studies-of-postural-control
#19
Cédrick T Bonnet, Sébastien Szaffarczyk
In studies of postural control, a control task is often used to understand significant effects obtained with experimental manipulations. This task should be the easiest task and (therefore) engage the lowest behavioral variability and cognitive workload. Since 1983, the stationary-gaze task is considered as the most relevant control task. Instead, the authors expected that free looking at small targets (white paper or images; visual angle: 12°) could be an easier task. To verify this assumption, 16 young individuals performed stationary-gaze, white-panel, and free-viewing 12° tasks in steady and relaxed stances...
September 2017: Journal of Motor Behavior
https://www.readbyqxmd.com/read/27693895/missed-opportunities-a-mixed-methods-analysis-of-cam-discussions-and-practices-in-the-management-of-pain-in-oncology
#20
Aaron L Leppin, Cara Fernandez, Jon C Tilburt
CONTEXT: Treatment of pain in cancer is a clinical priority. Many cancer patients seek and use complementary and alternative medicine (CAM) therapies. OBJECTIVES: The aim of this study was to describe the role CAM plays in oncology, clinicians' approaches to pain management and its alignment with patient preference and self-care. METHODS: We used quantitative criteria to identify patients with high, self-reported pain and reduced quality of life...
November 2016: Journal of Pain and Symptom Management
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