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https://www.readbyqxmd.com/read/28626305/inter-rater-and-intra-rater-reliability-of-the-fluid-goniometer-for-measuring-active-knee-flexion-in-painful-knees-correlations-do-not-mean-agreement
#1
Wilton Remigio, Nancy Tsai, Leonivic Layos, Michelle Chavez
[Purpose] The fluid goniometer is an instrument for measuring range of motion. Reliability of the fluid goniometer has not been established for subjects with painful knee joints. The purpose of this study was to determine the inter-rater and intra-rater reliability of the fluid goniometer in measuring active knee flexion of painful knees and to test its agreement with the gold standard ruler goniometer. [Subjects and Methods] Twenty-five individuals with either unilateral or bilateral painful knees participated in the study...
June 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28619447/similar-movements-are-associated-with-drastically-different-muscle-contraction-velocities
#2
Daniel A Hagen, Francisco J Valero-Cuevas
We investigated how kinematic redundancy interacts with the neurophysiological control mechanisms required for smooth and accurate, rapid limb movements. Biomechanically speaking, tendon excursions are over-determined because the rotation of few joints determines the lengths and velocities of many muscles. But how different are the muscle velocity profiles induced by various, equally valid hand trajectories? We used an 18-muscle sagittal-plane arm model to calculate 100,000 feasible shoulder, elbow, and wrist joint rotations that produced valid basketball free throws with different hand trajectories, but identical initial and final hand positions and velocities...
May 31, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28605314/the-validity-and-reliability-of-knee-proprioception-measurement-performed-with-inclinometer-in-different-positions
#3
Sinem Suner-Keklik, Gamze Cobanoglu-Seven, Nihan Kafa, Mustafa Ugurlu, Nevin Atalay Guzel
CONTEXT: Proprioception is the basic element of the spontaneous control of movement, balance and joint stability. Therefore, it is necessary for the execution of walking and daily and sport activities. Loss of proprioception of the knee, which may cause a new injury, is important to evaluate the position sense of the joint during the rehabilitation period. However, the evaluation methods that are used are very expensive, complicated and non-portable, or the measuring method is difficult to implement...
June 12, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28592552/colistin-and-polymyxin-b-susceptibility-testing-for-carbapenem-resistant-and-mcr-positive-enterobacteriaceae-comparison-of-sensititre-microscan-vitek-2-and-etest-with-broth-microdilution
#4
Ka Lip Chew, My-Van La, Raymond T P Lin, Jeanette W P Teo
Colistin and polymyxin B remain part of the last line of antibiotics for multi-drug-resistant Gram negative bacteria such as carbapenem-resistant-Enterobacteriaceae Current EUCAST-CLSI joint recommendations are for broth microdilution to be performed for MIC testing of colistin. Commercial susceptibility testing methods were evaluated and compared against reference broth microdilution (BMD), using a susceptible breakpoint of ≤2mg/L for both colistin and polymyxin B. Seventy-six Enterobacteriaceae were included, of which twenty-one were mcr-1 positive...
June 7, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28590562/robust-epi-nyquist-ghost-removal-by-incorporating-phase-error-correction-with-sensitivity-encoding-pec-sense
#5
Victor B Xie, Mengye Lyu, Yilong Liu, Yanqiu Feng, Ed X Wu
PURPOSE: The existing approach of Nyquist ghost correction by parallel imaging in echo planar imaging (EPI) can suffer from image noise amplification. We propose a method that estimates a phase error map from multi-channel data itself and incorporates it into the sensitivity encoding (SENSE) reconstruction for Nyquist ghost correction without compromising the image SNR. METHODS: This method first reconstructs two ghost-free images from positive and negative echoes using SENSE, respectively, from which the phase error map is computed...
June 7, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28590154/practice-parameters-facilitating-adoption-of-advanced-technologies-for-enhancing-neuropsychological-assessment-paradigms
#6
Thomas D Parsons, Timothy McMahan, Robert Kane
OBJECTIVE: Clinical neuropsychologists have long underutilized computer technologies for neuropsychological assessment. Given the rapid advances in technology (e.g. virtual reality; tablets; iPhones) and the increased accessibility in the past decade, there is an on-going need to identify optimal specifications for advanced technologies while minimizing potential sources of error. Herein, we discuss concerns raised by a joint American Academy of Clinical Neuropsychology/National Academy of Neuropsychology position paper...
June 7, 2017: Clinical Neuropsychologist
https://www.readbyqxmd.com/read/28573974/lower-limb-estimation-from-sparse-landmarks-using-an-articulated-shape-model
#7
Ju Zhang, Justin Fernandez, Jacqui Hislop-Jambrich, Thor F Besier
Rapid generation of lower limb musculoskeletal models is essential for clinically applicable patient-specific gait modeling. Estimation of muscle and joint contact forces requires accurate representation of bone geometry and pose, as well as their muscle attachment sites, which define muscle moment arms. Motion-capture is a routine part of gait assessment but contains relatively sparse geometric information. Standard methods for creating customized models from motion-capture data scale a reference model without considering natural shape variations...
December 8, 2016: Journal of Biomechanics
https://www.readbyqxmd.com/read/28558447/physical-characteristics-associated-with-neck-pain-and-injury-in-rugby-union-players
#8
Suzanne J Snodgrass, Peter G Osmotherly, Susan A Reid, Peter D Milburn, Darren A Rivett
BACKGROUND: Neck pain and injury are common in rugby union. Physical characteristics predisposing players to neck injury are largely unknown. This study aimed to determine physical characteristics associated with neck pain and injury in rugby union players. METHODS: Semi-professional rugby union players (n=142) underwent pre-season measurements including cervical active range of motion (AROM), strength, sensorimotor proprioception (joint position error), and anthropometry...
May 30, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28554245/a-device-for-testing-the-dynamic-performance-of-in-situ-force-plates
#9
Rebecca H East, Jonathan J Noble, Richard A Arscott, Adam P Shortland
Force plates are often incorporated into motion capture systems for the calculation of joint kinetic variables and other data. This project aimed to create a system that could be used to check the dynamic performance of force plate in situ. The proposed solution involved the design and development of an eccentrically loaded wheel mounted on a weighted frame. The frame was designed to hold a wheel mounted in two orthogonal positions. The wheel was placed on the force plate and spun. A VICON™ motion analysis system captured the positional data of the markers placed around the rim of the wheel which was used to create a simulated force profile, and the force profile was dependent on spin speed...
May 1, 2017: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/28515976/the-acute-effects-of-concentric-versus-eccentric-muscle-fatigue-on-shoulder-active-repositioning-sense
#10
Guido Spargoli
PURPOSE/BACKGROUND: Shoulder proprioception is essential in the activities of daily living as well as in sports. Acute muscle fatigue is believed to cause a deterioration of proprioception, increasing the risk of injury. The purpose of this study was to evaluate if fatigue of the shoulder external rotators during eccentric versus concentric activity affects shoulder joint proprioception as determined by active reproduction of position. STUDY DESIGN: Quasi-experimental trial...
April 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/28513271/college-pitchers-demonstrate-directional-differences-in-shoulder-joint-position-sense-compared-to-controls
#11
John Andrew Badagliacco, Andrew Karduna
CONTEXT: The relationship between overhead throwing and its effect on proprioception is not well understood. It is important to gain a better understanding of how these are related to protect overhead athletes from an increased risk of injury. OBJECTIVE: To investigate proprioceptive alterations in the overhead thrower's shoulder. DESIGN: Cross-Sectional Study. Independent variables are: limb (dominant and non-dominant), group (thrower or control), and target angle...
May 17, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28505208/neuromuscular-function-of-the-quadriceps-muscle-during-isometric-maximal-submaximal-and-submaximal-fatiguing-voluntary-contractions-in-knee-osteoarthrosis-patients
#12
Anett Mau-Moeller, Robert Jacksteit, Mario Jackszis, Frank Feldhege, Matthias Weippert, Wolfram Mittelmeier, Rainer Bader, Ralf Skripitz, Martin Behrens
INTRODUCTION: Knee osteoarthrosis (KOA) is commonly associated with a dysfunction of the quadriceps muscle which contributes to alterations in motor performance. The underlying neuromuscular mechanisms of muscle dysfunction are not fully understood. The main objective of this study was to analyze how KOA affects neuromuscular function of the quadriceps muscle during different contraction intensities. MATERIALS AND METHODS: The following parameters were assessed in 20 patients and 20 healthy controls: (i) joint position sense, i...
2017: PloS One
https://www.readbyqxmd.com/read/28502884/quantifying-sex-race-and-age-specific-differences-in-bone-microstructure-requires-measurement-of-anatomically-equivalent-regions
#13
Ali Ghasem-Zadeh, Andrew Burghardt, Xiao-Fang Wang, Sandra Iuliano, Serena Bonaretti, Minh Bui, Roger Zebaze, Ego Seeman
INTRODUCTION: Individuals differ in forearm length. As microstructure differs along the radius, we hypothesized that errors may occur when sexual and racial dimorphisms are quantified at a fixed distance from the radio-carpal joint. METHODS: Microstructure was quantified ex vivo in 18 cadaveric radii using high resolution peripheral quantitative computed tomography and in vivo in 158 Asian and Caucasian women and men at a fixed region of interest (ROI), a corrected ROI positioned at 4...
May 11, 2017: Bone
https://www.readbyqxmd.com/read/28492481/a-vision-aided-3d-path-teaching-method-before-narrow-butt-joint-welding
#14
Jinle Zeng, Baohua Chang, Dong Du, Guodong Peng, Shuhe Chang, Yuxiang Hong, Li Wang, Jiguo Shan
For better welding quality, accurate path teaching for actuators must be achieved before welding. Due to machining errors, assembly errors, deformations, etc., the actual groove position may be different from the predetermined path. Therefore, it is significant to recognize the actual groove position using machine vision methods and perform an accurate path teaching process. However, during the teaching process of a narrow butt joint, the existing machine vision methods may fail because of poor adaptability, low resolution, and lack of 3D information...
May 11, 2017: Sensors
https://www.readbyqxmd.com/read/28475981/soft-tissue-artifact-causes-significant-errors-in-the-calculation-of-joint-angles-and-range-of-motion-at-the-hip
#15
Niccolo M Fiorentino, Penny R Atkins, Michael J Kutschke, Justine M Goebel, K Bo Foreman, Andrew E Anderson
Soft tissue movement between reflective skin markers and underlying bone induces errors in gait analysis. These errors are known as soft tissue artifact (STA). Prior studies have not examined how STA affects hip joint angles and range of motion (ROM) during dynamic activities. Herein, we: 1) measured STA of skin markers on the pelvis and thigh during walking, hip abduction and hip rotation, 2) quantified errors in tracking the thigh, pelvis and hip joint angles/ROM, and 3) determined whether model constraints on hip joint degrees of freedom mitigated errors...
March 31, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28462545/indian-college-of-physicians-icp-position-statement-on-pharmacovigilance
#16
Puneet Dhamija, Sanjay Kalra, Pramod Kumar Sharma, V Kalaiselvan, A Muruganathan, Yatan Pal Singh Balhara, Rajesh Badani, Ganapathi Bantwal, A K Das, Bharati Dhorepatil, Sujoy Ghosh, Tarun Jeloka, Deepak Khandelwal, Milind Y Nadkar, Kuppili Pooja Patnaik, Banshi Saboo, Manisha Sahay, Rakesh Sahay, Mangesh Tiwaskar, A G Unnikrishnan
Pharmacovigilance is the art and science of detection, understanding and prevention of adverse drug reactions and not merely a critical analysis of prescriptions and errors. This field starts with reporting by clinicians of a suspected adverse drug reaction (ADR) to the pharmacologist followed by joint causality analysis and ends at the application of new information by a clinician for benefit of patients. There are a number of ways, which can be utilised for reporting adverse effects using pen and paper format to software applications for smart phones...
March 2017: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/28461129/the-effect-of-two-lumbar-belt-designs-on-trunk-repositioning-sense-in-people-with-and-without-low-back-pain
#17
Jean-Alexandre Boucher, Nicolas Roy, Richard Preuss, Christian Larivière
OBJECTIVES: Low back pain (LBP) has previously been associated with impaired lumbar proprioception, which may lead to and/or perpetuate joint instability as a cause of LBP. Wearing a lumbar belt (LB) may be beneficial in this regard. The primary aim was to determine the effect of 2 LB designs (extensible and non-extensible) on trunk repositioning sense in people with and without LBP. A secondary aim was to evaluate whether patients showing different clinical signs of lumbar instability differentially benefit from LBs in terms of lumbar proprioception...
April 28, 2017: Annals of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/28448851/accurate-3d-reconstruction-of-bony-surfaces-using-ultrasonic-synthetic-aperture-techniques-for-robotic-knee-arthroplasty
#18
William Kerr, Philip Rowe, Stephen Gareth Pierce
Robotically guided knee arthroplasty systems generally require an individualized, preoperative 3D model of the knee joint. This is typically measured using Computed Tomography (CT) which provides the required accuracy for preoperative surgical intervention planning. Ultrasound imaging presents an attractive alternative to CT, allowing for reductions in cost and the elimination of doses of ionizing radiation, whilst maintaining the accuracy of the 3D model reconstruction of the joint. Traditional phased array ultrasound imaging methods, however, are susceptible to poor resolution and signal to noise ratios (SNR)...
April 19, 2017: Computerized Medical Imaging and Graphics: the Official Journal of the Computerized Medical Imaging Society
https://www.readbyqxmd.com/read/28422771/slow-intermuscular-oscillations-are-associated-with-cocontraction-steadiness
#19
Nayef E Ahmar, Minoru Shinohara
PURPOSE: Voluntary muscle contraction often involves low-frequency correlated neural oscillations across muscles, which may degrade steady cocontraction between antagonistic muscles with distinct levels of activation per each muscle (unbalanced cocontraction). The purposes of the study were 1) to determine whether there is an association between the low-frequency correlated EMG oscillations and performance of steady unbalanced cocontraction across individuals and 2) to determine whether a bout of out-of-phase cocontraction practice reduces the in-phase low-frequency correlated neural oscillations and improves the performance of steady unbalanced cocontraction...
April 19, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28422650/joint-magnetic-calibration-and-localization-based-on-expectation-maximization-for-tongue-tracking
#20
Jun Lu, Zhongtao Yang, Klaus Okkelberg, Maysam Ghovanloo
BACKGROUND: Tongue tracking, which helps researchers gain valuable insights into speech mechanism, has many applications in speech therapy and language learning. The wireless localization technique, which involves tracking a small magnetic tracer within the 3-D oral space, provides a low cost and convenient approach to capture tongue kinematics. In practice, this technique requires accurate calibration of 3-axial magnetic sensors used in the tracking system. The data-driven calibration depends on the trajectories of magnetic tracer and the ambient noise, which may change across time and space...
April 12, 2017: IEEE Transactions on Bio-medical Engineering
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