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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)...
April 18, 2017: International Orthopaedics
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...
March 28, 2017: Musculoskeletal Science & Practice
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
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
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
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
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
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
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...
December 29, 2016: Journal of Motor Behavior
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
Oliver Ludwig, Jens Kelm, Michael Fröhlich
BACKGROUND: Peroneus longus acts as a foot evertor and pronator, thus ensuring stability of the talocrural joint by curbing inversion movement of the rearfoot. Increased activation of the peroneus longus muscle in the stance phase could have a stabilising effect on the ankle joint. This study aimed to determine whether the activity of the peroneus longus muscle could be increased by the targeted use of a specially formed lateral pressure element in a customised orthopaedic insole. METHODS: This was a laboratory-based study that utilised a randomised crossover design...
2016: Journal of Foot and Ankle Research
Nicole Perret, Giuseppe Longo
Reductionism is the dominant stance of biology. According to this perspective, biological phenomena have to fit with physical explanations. Some biologists thought that the introduction of the idea of program was a sound way to overcome both physicalism and reductionism. We argue instead that the introduction of information theory into biology did not liberate biology from reductionism. We argue that the adoption of information in biology is an erroneous transposition from a specific mathematical domain to one where it does not belong...
July 22, 2016: Progress in Biophysics and Molecular Biology
(no author information available yet)
1 The RCN has pledged to make the voice of nurses heard after the UK voted to leave the European Union. Despite maintaining a neutral stance in the run-up to the referendum, the college said it will continue to work closely with nursing organisations across the continent. Read more
July 6, 2016: Nursing Standard
Xingyu Chen, Xingda Qu
The main purpose of this study was to examine the effects of affective auditory stimuli on balance control during static stance. Twelve female and 12 male participants were recruited. Each participant completed four upright standing trials including three auditory stimuli trials and one baseline trial (ie no auditory stimuli). The three auditory stimuli trials corresponded to the pleasant, neutral and unpleasant sound conditions. Center of pressure (COP) measures were used to quantify balance control performance...
May 18, 2016: Ergonomics
Sathish Paul, Rekha Vijayakumar, Lazar Mathew, Sudesh Sivarasu
BACKGROUND: The subtalar joint position during static stance is a crucial determinant of the peak plantar pressures and forms ideal reference point for any intervention in foot-related problems for leprosy-affected patients. OBJECTIVES: The study pursued the hypothesis through a three-dimensional model that stress will be minimal in the distal joints of the foot when the subtalar joint is in neutral static stance position. STUDY DESIGN: Finite element model...
March 15, 2016: Prosthetics and Orthotics International
Simon S W Li, Daniel H K Chow
Change in sagittal spinal curvature from the neutral upright stance is an important measure of the heaviness and correctness of backpack use. As current recommendations, with respect to spinal profile, of backpack load thresholds were based on the significant curvature change in individual spinal region only, this study investigated the most critical backpack load by assessing simultaneously the spinal curvature changes along the whole spine. A motion analysis system was used to measure the curvature changes in cervical, upper thoracic, lower thoracic and lumbar regions with backpack load at 0, 5, 10, 15 and 20% of body weight...
November 2016: Ergonomics
Radmila Kostić, Slavoljub Uzunović, Tijana Purenović-Ivanović, Đurđica Miletić, Georgija Katsora, Saša Pantelić, Zoran Milanović
AIM: The aim of the study was to determine the effects of Greek folk dancing on postural stability in middle age women. METHODS: Sixty-three women aged from 47-53 participated in this study. All participants were randomly divided into the experimental group - 33 participants (mean ± SD; body height=160.13 ± 12.07 cm, body mass=63.81 ± 10.56 kg), and the control group - 30 participants (mean ± SD; body height=160.63 ± 6.22 cm, body mass=64.79 ± 8.19 kg). The following tests were used to evaluate the motor balance and posture stability of participants; the double-leg stance along the length of a balance beam (eyes open), the double-leg stance along the width of a balance beam (eyes open), the single-leg stance (eyes open) and the double-leg stance on one's toes (eyes closed)...
November 2015: Central European Journal of Public Health
Erika Giannotti, Andrea Merlo, Paolo Zerbinati, Maria Longhi, Paolo Prati, Stefano Masiero, Davide Mazzoli
BACKGROUND: Equinovarus foot deformity (EVFD) compromises several prerequisites of walking and increases the risk of falling. Guidelines on rehabilitation following EVFD surgery are missing in current literature. AIM: The aim of this study was to analyze safety and adherence to an early rehabilitation treatment characterized by immediate weight bearing with an ankle-foot orthosis (AFO) in hemiplegic patients after EVFD surgery and to describe gait changes after EVFD surgical correction combined with early rehabilitation treatment...
June 2016: European Journal of Physical and Rehabilitation Medicine
Christopher Bishop, John B Arnold, Thomas May
PURPOSE: There is a paucity of evidence on the biomechanical effects of foot taping and foot orthoses in realistic conditions. This study aimed to determine the immediate effect and relationships between changes in multisegment foot biomechanics with foot taping and customized foot orthoses in adults with flat-arched feet. METHODS: Multisegment foot biomechanics were measured in 18 adults with flat-arched feet (age 25.1 ± 2.8 yr; height 1.73 ± .13 m, body mass 70...
April 2016: Medicine and Science in Sports and Exercise
Iftach Hetsroni, Shany Funk, David Ben-Sira, Meir Nyska, Ezequiel Palmanovich, Moshe Ayalon
BACKGROUND: Gait analysis studies in patients with femoroacetabular impingement syndrome focused until today on alterations in pelvic and hip mechanics, but distal articulations in this syndrome were not explored. Viewing the inter-relationships between foot and hip mechanics and the importance of the subtalar joint in load attenuation at heel strike and during forward propulsion thereafter, alterations in hindfoot mechanics in this syndrome may have clinical significance. METHODS: Three-dimensional gait kinematics were explored with emphasis on hindfoot mechanics in a group of 15 men with cam-type femoroacetabular impingement and compared to 15 healthy men...
December 2015: Clinical Biomechanics
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