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https://www.readbyqxmd.com/read/28813815/how-do-strength-and-coordination-recovery-interact-after-stroke-a-computational-model-for-informing-robotic-training
#1
Sumner L Norman, Joan Lobo-Prat, David J Reinkensmeyer
Robotic devices can train strength, coordination, or a combination of both. If a robotic device focuses on coordination, what happens to strength recovery, and vice versa? Understanding this interaction could help optimize robotic training. We developed a computational neurorehabilitation model to gain insight into the interaction between strength and coordination recovery after stroke. In the model, the motor system recovers by optimizing the activity of residual corticospinal cells (focally connected, excitatory and inhibitory) and reticulospinal cells (diffusely connected and excitatory) to achieve a motor task...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28809628/-the-effect-of-activation-of-the-shoulder-girdle-muscles-on-functional-outcomes-of-rehabilitation-in-patients-with-surgically-treated-distal-radius-fractures
#2
V Jančíková, J Opavský, P Dráč, A Krobot, I Čižmář
PURPOSE OF THE STUDY The aim of the study was to assess the functional outcomes of rehabilitation in patients with surgically treated distal radius fractures in the early postoperative period. We compared the functional outcomes of patients undergoing standard rehabilitation with the group of patients whose postoperative rehabilitation was extended with shoulder girdle exercises of the affected upper limb while the wrist was immobilized. Several indices and variables were used for the assessment of the functional therapeutic outcomes of the affected wrist...
2017: Acta Chirurgiae Orthopaedicae et Traumatologiae Cechoslovaca
https://www.readbyqxmd.com/read/28807213/turkey-model-for-flexor-tendon-research-in%C3%A2-vitro-comparison-of-human-canine-turkey-and-chicken-tendons
#3
Assaf Kadar, Andrew R Thoreson, Ramona L Reisdorf, Peter C Amadio, Steven L Moran, Chunfeng Zhao
BACKGROUND: Flexor tendon injuries are one of the most common hand injuries and remain clinically challenging for functional restoration. Canine and chicken have been the most commonly used animal models for flexor tendon-related research but possess several disadvantages. The purpose of this study was to explore a potential turkey model for flexor tendon research. METHODS: The third digit from human cadaveric hands, canine forepaws, turkey foot, and chicken foot were used for this study...
August 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/28806827/-functional-outcome-following-high-pressure-injection-injuries-of-the-hand
#4
Florian Neubrech, Christian A Radu, David Pauli, Berthold Bickert, Ulrich Kneser, Leila Harhaus
Background High-pressure injection injuries are devastating injuries that often lead to an amputation of the primarily affected finger. The available literature mainly focuses on amputation rates, while there is a lack of knowledge regarding functional results. Patients and Methods Between 1998 and 2016, 47 cases of high-pressure injection injuries of the hand were registered in our department. Out of these, data of 26 patients, all men with an average age of 42 (18-62) years, were included in a retrospective follow-up examination after 4 (1-12) years...
August 2017: Handchirurgie, Mikrochirurgie, Plastische Chirurgie
https://www.readbyqxmd.com/read/28803535/robotic-assistance-for-training-finger-movement-using-a-hebbian-model-a-randomized-controlled-trial
#5
Justin B Rowe, Vicky Chan, Morgan L Ingemanson, Steven C Cramer, Eric T Wolbrecht, David J Reinkensmeyer
BACKGROUND: Robots that physically assist movement are increasingly used in rehabilitation therapy after stroke, yet some studies suggest robotic assistance discourages effort and reduces motor learning. OBJECTIVE: To determine the therapeutic effects of high and low levels of robotic assistance during finger training. METHODS: We designed a protocol that varied the amount of robotic assistance while controlling the number, amplitude, and exerted effort of training movements...
August 2017: Neurorehabilitation and Neural Repair
https://www.readbyqxmd.com/read/28794977/time-dependent-functional-role-of-the-contralesional-motor-cortex-after-stroke
#6
L J Volz, M Vollmer, J Michely, G R Fink, J C Rothwell, C Grefkes
After stroke, movements of the paretic hand rely on altered motor network dynamics typically including additional activation of the contralesional primary motor cortex (M1). The functional implications of contralesional M1 recruitment to date remain a matter of debate. We here assessed the role of contralesional M1 in 12 patients recovering from a first-ever stroke using online transcranial magnetic stimulation (TMS): Short bursts of TMS were administered over contralesional M1 or a control site (occipital vertex) while patients performed different motor tasks with their stroke-affected hand...
2017: NeuroImage: Clinical
https://www.readbyqxmd.com/read/28782096/the-prevention-of-musculoskeletal-injuries-in-volleyball-the-systematic-development-of-an-intervention-and-its-feasibility
#7
Vincent Gouttebarge, Marije van Sluis, Evert Verhagen, Johannes Zwerver
BACKGROUND: A scientific research project has started in the Netherlands with the aim of developing and implementing an evidence-based intervention to prevent the occurrence of musculoskeletal injuries among young and adult recreational volleyball players. This article describes (i) the systematic development of the intervention; and (ii) the assessment of its feasibility in terms of relevancy, suitability and usability. SYSTEMATIC DEVELOPMENT OF THE INTERVENTION: The development of the intervention was based on the Intervention Mapping structured and systematic process...
December 2017: Injury Epidemiology
https://www.readbyqxmd.com/read/28774483/clinical-relevance-commentary-in-response-to-effectiveness-of-a-fine-motor-skills-rehabilitation-program-on-upper-limb-disability-manual-dexterity-pinch-strength-range-of-finger-motion-performance-in-activities-of-daily-living-functional-independence-and-general
#8
https://www.readbyqxmd.com/read/28774241/an-experimental-model-on-the-biomechanical-behaviour-of-the-flexor-tendons-in-new-zealand-rabbits
#9
D Skouteris, E Magnissalis, A Papalois, S Varitimidis, P J Papagelopoulos, A B Zoubos
BACKGROUND: In order to introduce new pharmacological agents with the intent to inhibit the adhesion formation, it is important to test such products on laboratory animals under a protocol that can evaluate the quantitative and qualitative aspects of healing of the tendons. Most experimental models focus on the tensile strength and histological analysis of the tendons, failing to sufficiently quantify the degree of the adhesion formation. METHODS: The experiment included six male New Zealand rabbits that underwent surgery of their right forepaws...
September 2017: Journal of Hand Surgery Asian-Pacific Volume
https://www.readbyqxmd.com/read/28771525/the-role-of-physique-strength-and-endurance-in-the-achievements-of-elite-climbers
#10
Mariusz Ozimek, Robert Rokowski, Paweł Draga, Vladimir Ljakh, Tadeusz Ambroży, Marcin Krawczyk, Tomasz Ręgwelski, Arkadiusz Stanula, Karol Görner, Adam Jurczak, Dariusz Mucha
PURPOSE: The primary aim of this study is to determine the principal somatic and motor determinants for elite climbers. METHODS: Twenty climbers were examined [age: 28.5±6.1 years].The runners were divided into two groups based on their climbing level, according to the International Rock Climbing Research Association (IRCRA). Elite climbers represented a 8b-8c Rotpunkt (RP) climbing level (n = 6), and advanced climbers represented an 7c+-8a RP level (n = 14). The following measurements were assessed: height, weight, lean body mass, upper limb length, arm span, and forearm, arm, thigh and calf circumference...
2017: PloS One
https://www.readbyqxmd.com/read/28746282/outcomes-of-muscle-brachialis-transfer-to-restore-finger-flexion-in-brachial-plexus-palsy
#11
Brent R DeGeorge, Hillary A Becker, John H Faryna, Robert J Spinner, Allen T Bishop, Alexander Y Shin
BACKGROUND: In adults with lower trunk brachial plexus injury, proximal nerve surgery for restoration of prehension demonstrates poor outcomes secondary to long distances required for nerve regeneration and time-dependent degradation of motor endplates. Options for reconstruction are limited to distal tendon or nerve transfers and free-functioning muscle transfers. In this article, the authors describe the long-term outcomes of brachialis muscle-to-flexor digitorum profundus transfer to restore prehension in patients with traumatic lower trunk brachial plexus injuries...
August 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28721447/direct-repair-of-the-sagittal-band-for-extensor-tendon-subluxation-caused-by-finger-flicking
#12
In Tae Hong, Chi Hoon Oh, Young Suk Sim, Soo Hong Han
PURPOSE: For patients with metacarpophalangeal (MCP) extensor tendon subluxation caused by finger flicking injury, we performed an extensor tendon realignment and direct repair technique. The purpose of this study was to evaluate the clinical outcome after direct repair of the sagittal band in patients with MCP extensor tendon subluxation caused by finger flicking injury and to introduce the repair technique. METHODS: A total of 26 patients with a mean age of 39...
July 18, 2017: Der Orthopäde
https://www.readbyqxmd.com/read/28719990/radiographic-and-clinical-assessment-of-intramedullary-nail-fixation-for-the-treatment-of-unstable-metacarpal-fractures
#13
Ather Mirza, Justin Mirza, Chris Healy, Vishaaq Mathew, Brian Lee
BACKGROUND: The purpose of the article was to evaluate clinical and radiographic outcomes in a case series of unstable metacarpal fractures treated with flexible intramedullary nail (IMN) fixation. METHODS: A total of 55 patients with unstable metacarpal fractures between 2003 and 2010 were treated with IMN fixation and followed for a minimum of 1 year. The outcomes were assessed via a radiological study of longitudinal and angular collapse, Disabilities of the Arm, Shoulder, and Hand (DASH) score, total active range of motion (ROM) of the wrist, and grip strength testing...
March 1, 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28713255/the-impact-of-aerobic-exercise-on-fronto-parietal-network-connectivity-and-its-relation-to-mobility-an-exploratory-analysis-of-a-6-month-randomized-controlled-trial
#14
Chun L Hsu, John R Best, Shirley Wang, Michelle W Voss, Robin G Y Hsiung, Michelle Munkacsy, Winnie Cheung, Todd C Handy, Teresa Liu-Ambrose
Impaired mobility is a major concern for older adults and has significant consequences. While the widely accepted belief is that improved physical function underlies the effectiveness of targeted exercise training in improving mobility and reducing falls, recent evidence suggests cognitive and neural benefits gained through exercise may also play an important role in promoting mobility. However, the underlying neural mechanisms of this relationship are currently unclear. Thus, we hypothesize that 6 months of progressive aerobic exercise training would alter frontoparietal network (FPN) connectivity during a motor task among older adults with mild subcortical ischemic vascular cognitive impairment (SIVCI)-and exercise-induced changes in FPN connectivity would correlate with changes in mobility...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28704209/robotic-hand-assisted-training-for-spinal-cord-injury-driven-by-myoelectric-pattern-recognition-a-case-report
#15
Zhiyuan Lu, Kai-Yu Tong, Henry Shin, Argyrios Stampas, Ping Zhou
A 51-year-old man with an incomplete C6 spinal cord injury sustained 26 yrs ago attended twenty 2-hr visits over 10 wks for robot-assisted hand training driven by myoelectric pattern recognition. In each visit, his right hand was assisted to perform motions by an exoskeleton robot, while the robot was triggered by his own motion intentions. The hand robot was designed for this study, which can perform six kinds of motions, including hand closing/opening; thumb, index finger, and middle finger closing/opening; and middle, ring, and little fingers closing/opening...
July 12, 2017: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/28696658/ultrasensitive-wearable-soft-strain-sensors-of-conductive-self-healing-and-elastic-hydrogels-with-synergistic-soft-and-hard-hybrid-networks
#16
Yan-Jun Liu, Wen-Tao Cao, Ming-Guo Ma, Pengbo Wan
Robust, stretchable and strain-sensitive hydrogels have recently attracted immense research interest due to their potential application in wearable strain sensors. The integration of the synergistic characteristics of decent mechanical properties, reliable self-healing capability, and high sensing sensitivity for fabricating conductive, elastic, self-healing, and strain-sensitive hydrogels is still a great challenge. Inspired by the mechanically excellent and self-healing biological soft tissues with hierarchical network structures, herein, functional network hydrogels are fabricated by the interconnection between a "soft" homogeneous polymer network and a "hard" dynamic ferric (Fe3+) cross-linked cellulose nanocrystals (CNCs-Fe(3+)) network...
July 11, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28687062/evaluation-of-hand-orthoses-in-duchenne-muscular-dystrophy
#17
Johanna Weichbrodt, Britt-Marie Eriksson, Anna-Karin Kroksmark
PURPOSE: The purpose of this study was to evaluate whether treatment of boys with Duchenne muscular dystrophy using hand orthoses could benefit joint mobility, grip strength, or fine motor function. METHOD: Eight boys with Duchenne muscular dystrophy were provided with individually customised rest orthoses. The results were analysed using single-subject design. The study included a baseline and an intervention phase. A follow-up examination was also performed. RESULTS: Boys with less than 50° passive wrist extension mobility were included...
July 7, 2017: Disability and Rehabilitation
https://www.readbyqxmd.com/read/28682860/a-biomechanical-analysis-of-plate-fixation-using-unicortical-and-bicortical-screws-in-transverse-metacarpal-fracture-models-subjected-to-4-point-bending-and-dynamical-bending-test
#18
Eirini Liodaki, Robert Wendlandt, Klaus Waizner, Brigitte E Schopp, Peter Mailänder, Felix Stang
In the published literature there are controversial data to the biomechanical stability of monocortical comparing to the bicortical fixation of metacarpal fractures. The aim of this study was to compare the biomechanical stability of monocortical and bicortical locking osteosynthesis in quasi-static and dynamic 4-point bending tests of composite third metacarpal bone (4th Gen third metacarpal, Sawbones, Malmö, Sweden) fixed with 7-hole locking plate (XXS System, Biotech-Ortho, Wright, Memphis, TN). The tests to determine quasi-static yield and bending strength as well as fatigue strength were conducted in 4 groups of 10 samples after creating standardized mid-shaft transverse osteotomies using a diamont belt grinder (0...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28681161/functional-and-cosmetic-outcome-of-single-digit-ray-amputation-in-hand
#19
A K Bhat, A M Acharya, J K Narayanakurup, B Kumar, P S Nagpal, A Kamath
PURPOSE: To assess patient satisfaction, functional and cosmetic outcomes of single-digit ray amputation in hand and identify factors that might affect the outcome. METHODS: Forty-five patients who underwent ray amputation were evaluated, 37 males and eight females whose mean age was 36.6 years ranging between 15 and 67 years. Twenty-eight patients had dominant hand involvement. Twenty-one patients underwent primary ray amputation, and 24 patients had secondary ray amputation...
July 5, 2017: Musculoskeletal Surgery
https://www.readbyqxmd.com/read/28674489/multi-finger-interaction-and-synergies-in-finger-flexion-and-extension-force-production
#20
Jaebum Park, Dayuan Xu
The aim of this study was to discover finger interaction indices during single-finger ramp tasks and multi-finger coordination during a steady state force production in two directions, flexion, and extension. Furthermore, the indices of anticipatory adjustment of elemental variables (i.e., finger forces) prior to a quick pulse force production were quantified. It is currently unknown whether the organization and anticipatory modulation of stability properties are affected by force directions and strengths of in multi-finger actions...
2017: Frontiers in Human Neuroscience
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