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https://www.readbyqxmd.com/read/28228582/multi-digit-force-control-during-unconstrained-grasping-in-response-to-object-perturbations
#1
Abdeldjallil Naceri, Alessandro Moscatelli, Robert Haschke, Helge Ritter, Marco Santello, Marc O Ernst
Because of the complex anatomy of the human hand, in the absence of external constraints a large number of postures and force combinations can be used to attain a stable grasp. Motor synergies provide a viable strategy to solve this problem of motor redundancy. In this study, we exploited the technical advantages of an innovative sensorized object to study unconstrained hand grasping within the theoretical framework of motor synergies. Participants were required to grasp, lift, and hold the sensorized object...
February 22, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28227740/influence-of-force-feedback-on-grasp-force-modulation-in-prosthetic-applications-a-preliminary-study
#2
Sasha B Godfrey, Matteo Bianchi, Antonio Bicchi, Marco Santello, Sasha B Godfrey, Matteo Bianchi, Antonio Bicchi, Marco Santello, Marco Santello, Antonio Bicchi, Sasha B Godfrey, Matteo Bianchi
In typical movement, humans use a combination of feed-forward and feedback motor control strategies to interact with the world around them. However, when sensory input is impaired or absent, as in the case of various neuropathies or amputation, the ability to perform everyday tasks, like modulating grip force to object weight, can be affected. In this study, we show the results of a preliminary study using a pressure cuff-like force feedback device (CUFF) with the SoftHand Pro (SHP) prosthetic hand. Subjects lifted an object of various weights using their own hand, with the SHP without feedback, and the SHP with force feedback...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227672/robot-assisted-microsurgical-forceps-with-haptic-feedback-for-transoral-laser-microsurgery
#3
Nikhil Deshpande, Manish Chauhan, Claudio Pacchierotti, Domenico Prattichizzo, Darwin G Caldwell, Leonardo S Mattos, Nikhil Deshpande, Manish Chauhan, Claudio Pacchierotti, Domenico Prattichizzo, Darwin G Caldwell, Leonardo S Mattos, Darwin G Caldwell, Leonardo S Mattos, Nikhil Deshpande, Domenico Prattichizzo, Manish Chauhan, Claudio Pacchierotti
In this paper, a novel, motorized, multi-degrees-of-freedom (DoF), microsurgical forceps tool is presented, which is based on a master-slave teleoperation architecture. The slave device is a 7-DoF manipulator with: (i) 6-DoF positioning and orientation, (ii) 1 open/close gripper DoF; and (iii) an integrated force/torque sensor for tissue grip-force measurement. The master device is a 7-DoF haptic interface which teleoperates the slave device, and provides haptic feedback in its gripper interface. The combination of the device and the surgeon interface replaces the manual, hand-held device providing easy-to-use and ergonomic tissue control, simplifying the surgical tasks...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227639/investigation-of-a-passive-capstan-based-grasp-enhancement-feature-in-a-voluntary-closing-prosthetic-terminal-device
#4
Kevin D Gemmell, Michael T Leddy, Joseph T Belter, Aaron M Dollar, Kevin D Gemmell, Michael T Leddy, Joseph T Belter, Aaron M Dollar, Joseph T Belter, Kevin D Gemmell, Michael T Leddy, Aaron M Dollar
Body-powered prosthetic terminal devices fall into two main categories: voluntary-closing devices, which require the user to exert a force to maintain a grasp, and voluntary opening devices, which generally utilize springs to close and maintain a force. As a result, voluntary-closing devices often have a locking feature that allows the user to relax and transport objects while maintaining a firm grip. In this paper, we examine a new type of capstan-based passive brake mechanism in a voluntary-closing prosthetic terminal device...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226803/closed-loop-afferent-electrical-stimulation-for-recovery-of-hand-function-in-individuals-with-motor-incomplete-spinal-injury-early-clinical-results
#5
Christopher J Schildt, Sarah H Thomas, Elizabeth S Powell, Lumy Sawaki, Sridhar Sunderam, Christopher J Schildt, Sarah H Thomas, Elizabeth S Powell, Lumy Sawaki, Sridhar Sunderam, Lumy Sawaki, Christopher J Schildt, Elizabeth S Powell, Sarah H Thomas, Sridhar Sunderam
Afferent electrical stimulation is known to augment the effect of rehabilitative therapy through use-dependent cortical plasticity. Experiments pairing transcranial magnetic stimulation (TMS) with peripheral nerve stimulation (PNS) have shown a timing-dependent effect on motor evoked potential (MEP) amplitude suggesting that PNS applied in closed-loop (CL) mode could augment this effect through positive reinforcement. We present early results from a clinical trial in which an EEG brain-machine interface (BMI) was used to apply PNS to two subjects in response to motor intent detected from sensorimotor cortex in a cue-driven hand grip task...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226564/hand-rehabilitation-after-stroke-using-a-wearable-high-dof-spring-powered-exoskeleton
#6
Tianyao Chen, Peter S Lum, Tianyao Chen, Peter S Lum, Peter S Lum, Tianyao Chen
Stroke patients often have inappropriate finger flexor activation and finger extensor weakness, which makes it difficult to open their affected hand for functional grasp. The goal was to develop a passive, lightweight, wearable device to enable improved hand function during performance of activities of daily living. The device, HandSOME II, assists with opening the patient's hand using 11 elastic actuators that apply extension torques to finger and thumb joints. Device design and initial testing are described...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28224473/relationship-between-major-dietary-patterns-and-sarcopenia-among-menopausal-women
#7
Reza Mohseni, Sima Aliakbar, Afsoun Abdollahi, Mir Saeed Yekaninejad, Zhila Maghbooli, Khadijeh Mirzaei
BACKGROUND AND AIM: Dietary habits have been associated with the prevalence of the sarcopenia and limited data are available in this field for menopausal women. This study focused on the relationship between dietary patterns and prevalence of the sarcopenia in menopausal women. METHODS: This cross-sectional study was done in 250 menopausal women 45 years old or older. Dietary data were collected using a food-frequency questionnaire and physical activity was assessed by International Physical Activity Questionnaire (IPAQ)...
February 21, 2017: Aging Clinical and Experimental Research
https://www.readbyqxmd.com/read/28224314/creating-semantics-in-tool-use
#8
Arnaud Badets, Thomas Michelet, Aymar de Rugy, François Osiurak
This article presents the first evidence for a functional link between tool use and the processing of abstract symbols like Arabic numbers. Participants were required to perform a tool-use task after the processing of an Arabic number. These numbers represented either a small (2 or 3) or a large magnitude (8 or 9). The tool-use task consisted in using inverse pliers for gripping either a small or a large object. The inverse pliers enable to dissociate the hand action from the tool action in relation to the object (i...
February 21, 2017: Cognitive Processing
https://www.readbyqxmd.com/read/28224299/clinical-impact-of-sarcopenia-and-relevance-of-nutritional-intake-in-patients-before-and-after-allogeneic-hematopoietic-stem-cell-transplantation
#9
Shouichi Tanaka, Osamu Imataki, Atsuo Kitaoka, Shuji Fujioka, Etsuyo Hanabusa, Yumiko Ohbayashi, Makiko Uemura, Nobuo Arima, Tetsuji Yamamoto
PURPOSE: We conducted a retrospective study to evaluate the effect of rehabilitation on minimizing sarcopenia during hematopoietic stem cell transplantation (HSCT) therapy. METHODS: We developed a protocol to test for retention of physical function during HSCT. Muscle strength, muscle circumference, and muscle function before and after HSCT were measured. Consecutive patients with hematological malignancies who underwent HSCT treatment were recruited in this research...
February 21, 2017: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/28220194/-diagnostic-ability-of-power-measurement-of-different-grip-forms-for-distal-median-nerve-lesion
#10
N Wachter, M Mentzel, G Krischak, C Häderer, J Gülke
BACKGROUND: Peripheral lesions of the median nerve cause characteristic changes of the grip function of the hand. For evaluating grip force changes, measurement by dynamometers (JAMAR dynamometer and pinch dynamometer) is of high relevance. In this study the ability of grip force measurements of different grip forms was evaluated to discriminate between a simulated median nerve lesion and healthy subjects. MATERIAL AND METHODS: In 21 healthy subjects, the grip force of power grip was measured by the JAMAR dynamometer at the second stage including measurement of force at the fingertips and the thenar by a sensor glove...
February 20, 2017: Der Unfallchirurg
https://www.readbyqxmd.com/read/28220051/the-effect-of-vibration-exposure-during-haul-truck-operation-on-grip-strength-touch-sensation-and-balance
#11
Jonisha Pollard, William Porter, Alan Mayton, Xueyan Xu, Eric Weston
Falls from mobile equipment are reported at surface mine quarry operations each year in considerable numbers. Research shows that a preponderance of falls occur while getting on/off mobile equipment. Contributing factors to the risk of falls include the usage of ladders, exiting onto a slippery surface, and foot or hand slippage. Balance issues may also contribute to fall risks for mobile equipment operators who are exposed to whole-body vibration (WBV). For this reason, the National Institute for Occupational Safety and Health, Office of Mine Safety and Health Research conducted a study at four participating mine sites with seven haul truck operators...
January 2017: International Journal of Industrial Ergonomics
https://www.readbyqxmd.com/read/28219586/factors-associated-with-the-development-of-sarcopenia-in-kidney-transplant-recipients
#12
M Yanishi, Y Kimura, H Tsukaguchi, Y Koito, H Taniguchi, T Mishima, Y Fukushima, M Sugi, H Kinoshita, T Matsuda
INTRODUCTION: Sarcopenia is characterized by an involuntary loss of skeletal muscle mass, strength, and function. Previous studies suggest that it is generally associated with aging and chronic kidney diseases. The focus of this study was on the association between sarcopenia and pre-sarcopenia in kidney transplant recipients. METHODS: Fifty-one patients who underwent kidney transplantation at Kansai Medical University Hospital were enrolled, and their sarcopenia status was evaluated between April and July 2016...
March 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28215058/effect-of-cervical-versus-thoracic-spinal-manipulation-on-peripheral-neural-features-and-grip-strength-in-subjects-with-chronic-mechanical-neck-pain-a-randomized-controlled-trial
#13
Francisco Bautista-Aguirre, Ángel Oliva-Pascual-Vaca, Alberto M Heredia-Rizo, Juan J Boscá-Gandía, François Ricard, Cleofás Rodriguez-Blanco
BACKGROUND: Cervical and thoracic spinal manipulative therapy has shown positive impact for relief of pain and improve function in non-specific mechanical neck pain. Several attempts have been made to compare their effectiveness although previous studies lacked a control group, assessed acute neck pain or combined thrust and nonthrust techniques. AIM: To compare the immediate effects of cervical and thoracic spinal thrust manipulations on mechanosensitivity of upper limb nerve trunks and grip strength in patients with chronic non-specific mechanical neck pain...
February 17, 2017: European Journal of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/28211292/clinical-and-functional-outcome-of-open-primary-repair-of-triangular-fibrocartilage-complex-tears-associated-with-distal-radius-fractures
#14
Faisal Johandi, Sreedharan Sechachalam
PURPOSE: We evaluate the clinical and functional outcome of open primary repair of acute TFCC tears in distal radius fracture, when there is gross intraoperative distal radioulnar joint (DRUJ) instability after fixation of the distal radius, in the absence of an ulnar styloid fracture or when the ulnar fracture fragment is too small to be fixed. METHODS: A retrospective review of our institution's distal radius fracture database over a 4-year period (January 2010 to December 2013)...
January 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28210859/effectiveness-of-peloid-therapy-in-carpal-tunnel-syndrome-a-randomized-controlled-single-blind-study
#15
Burcu Metin Ökmen, Meliha Kasapoğlu Aksoy, Aygül Güneş, Riza Eröksüz, Lale Altan
Carpal tunnel syndrome(CTS) is the most common neuromuscular cause of upper extremity disability. We aimed to investigate the effectiveness of peloid therapy in patients with CTS. This randomized, controlled, single-blind study enrolled 70 patients between the ages of 30 to 65 who had a diagnosis of either mild, mild-to-moderate, or moderate CTS. The patients were randomized into two groups using random number table. In the first group, (Group 1)(n = 35), patients were given splint (every night for 6 weeks) + peloid treatment(five consecutive days a week for 2 weeks) and in the second group, (Group 2)(n = 28), patients received splint treatment(every night for 6 weeks) alone...
February 16, 2017: International Journal of Biometeorology
https://www.readbyqxmd.com/read/28205496/planning-functional-grasps-of-simple-tools-invokes-the-hand-independent-praxis-representation-network-an-fmri-study
#16
Łukasz Przybylski, Gregory Króliczak
OBJECTIVES: Neuropsychological and neuroimaging evidence indicates that tool use knowledge and abilities are represented in the praxis representation network (PRN) of the left cerebral hemisphere. We investigated whether PRN would also underlie the planning of function-appropriate grasps of tools, even though such an assumption is inconsistent with some neuropsychological evidence for independent representations of tool grasping and skilled tool use. METHODS: Twenty right-handed participants were tested in an event-related functional magnetic resonance imaging (fMRI) study wherein they planned functionally appropriate grasps of tools versus grasps of non-tools matched for size and/or complexity, and later executed the pantomimed grasps of these objects...
February 2017: Journal of the International Neuropsychological Society: JINS
https://www.readbyqxmd.com/read/28205470/arthrodesis-of-little-finger-distal-interphalangeal-joint-in-flexion-to-regain-sporting-ability
#17
S M Beecher, D E O'Briain, J P Ng, E Murphy, M E O'Sullivan
BACKGROUND: Finger injuries are common in the sport of hurling. Injury to the little finger distal interphalangeal joint (DIPJ) often occurs when a high dropping ball impacts on the outstretched finger. The little finger contributes to approximately 15% of grip strength. Injury therefore results in reduced grip strength and may impair the ability of players to grip or catch a ball. METHODS: Six elite hurlers with post-traumatic arthritis of their non-dominant little finger DIPJ underwent arthrodesis in 30 degrees of flexion...
March 2017: Journal of Hand Surgery Asian-Pacific Volume
https://www.readbyqxmd.com/read/28205055/effectiveness-of-calcifediol-in-improving-muscle-function-in-post-menopausal-women-a-prospective-cohort-study
#18
Giovanni Iolascon, Antimo Moretti, Alessandro de Sire, Dario Calafiore, Francesca Gimigliano
INTRODUCTION: The role of vitamin D supplementation on muscle function and physical performance is still debated. Calcifediol is an available treatment for hypovitaminosis D, particularly for extra-skeletal effects. Aim of this prospective cohort study was to evaluate the effectiveness of calcifediol on serum levels of 25(OH)D3, appendicular muscle strength, physical performance, and prevention of falls in post-menopausal women. METHODS: We recruited post-menopausal women aged ≥50 years, referring to an outpatient service for the management of osteoporosis over a 18-month period...
February 15, 2017: Advances in Therapy
https://www.readbyqxmd.com/read/28199721/the-association-between-sleep-duration-and-hand-grip-strength-in-community-dwelling-older-adults-the-yilan-study-taiwan
#19
Hsi-Chung Chen, Nai-Wei Hsu, Pesus Chou
No abstract text is available yet for this article.
February 10, 2017: Sleep
https://www.readbyqxmd.com/read/28198602/the-profile-of-upper-extremity-muscular-strength-in-female-wheelchair-basketball-players-a-pilot-study
#20
Bahar Külünkoğlu, Yasemin Akkubak, Nevin Ergun
BACKGROUND: The purpose of this study was to analyze and compare the profile of upper extremity muscle strength in female wheelchair basketball players with that of sex-matched non-disabled controls. METHODS: Nineteen female subjects were enrolled in this study. These were divided into two groups. Group 1 (n=10) consisted of wheelchair basketball players and Group 2 (n=9) of non-disabled individuals. Muscular strength in the shoulder was measured using an isokinetic dynamometer...
February 14, 2017: Journal of Sports Medicine and Physical Fitness
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