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https://www.readbyqxmd.com/read/29684506/age-related-impairment-of-hand-movement-perception-based-on-muscle-proprioception-and-touch
#1
C Landelle, A El Ahmadi, A Kavounoudias
Impairment in fine hand motor dexterity is well established in older people, yet little is known, about the impaired perception of hand movement in the elderly. Only an age-related increase in movement detection threshold has been reported. Perception of hand movements relies on multiple sensory information, including touch and muscle proprioception. The present study aims to investigate to what extent aging impacts the ability to perceive hand movements accurately and whether this impairment is from a muscle proprioceptive and/or tactile origin...
April 20, 2018: Neuroscience
https://www.readbyqxmd.com/read/29676438/the-influence-of-digit-size-and-proportions-on-dexterity-during-cold-exposure
#2
Stephanie Payne, Alison Macintosh, Jay Stock
OBJECTIVES: The current study investigated whether size and proportions of the hands and digits affect dexterity during severe cold exposure. As wide hands are known to lose less heat than narrow hands, and narrow digits are associated with greater dexterity, this study aimed to test whether there was a direct trade-off between dexterity and thermoregulation that shapes hand morphology. METHODS: Participants (25 women, 15 men) carried out the Purdue Pegboard test before and after a 3-min ice-water immersion of the hand...
April 20, 2018: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/29674012/interventional-radiology-operated-endoscopy-as-an-adjunct-to-image-guided-interventions
#3
REVIEW
Rajiv N Srinivasa, Jeffrey Forris Beecham Chick, Kyle Cooper, Ravi N Srinivasa
PURPOSE: Interventional radiology-operated endoscopy is an underused technique, which may have a significant impact on the ability to treat patients with a variety of conditions. The purpose of this article is to discuss the setup, equipment, and potential clinical uses of interventional radiology-operated endoscopy. METHODS: A number of new and innovative interventions may be performed in the biliary, genitourinary, and gastrointestinal systems through percutaneous access that interventional radiologists already create...
March 20, 2018: Current Problems in Diagnostic Radiology
https://www.readbyqxmd.com/read/29670506/dexterous-control-of-seven-functional-hand-movements-using-cortically-controlled-transcutaneous-muscle-stimulation-in-a-person-with-tetraplegia
#4
Samuel C Colachis, Marcie A Bockbrader, Mingming Zhang, David A Friedenberg, Nicholas V Annetta, Michael A Schwemmer, Nicholas D Skomrock, Walter J Mysiw, Ali R Rezai, Herbert S Bresler, Gaurav Sharma
Individuals with tetraplegia identify restoration of hand function as a critical, unmet need to regain their independence and improve quality of life. Brain-Computer Interface (BCI)-controlled Functional Electrical Stimulation (FES) technology addresses this need by reconnecting the brain with paralyzed limbs to restore function. In this study, we quantified performance of an intuitive, cortically-controlled, transcutaneous FES system on standardized object manipulation tasks from the Grasp and Release Test (GRT)...
2018: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/29665842/sensory-re-learning-of-the-upper-limb-after-stroke-sensupp-study-protocol-for-a-pilot-randomized-controlled-trial
#5
Håkan Carlsson, Birgitta Rosén, Hélène Pessah-Rasmussen, Anders Björkman, Christina Brogårdh
BACKGROUND: Many stroke survivors suffer from sensory impairments of their affected upper limb (UL). Although such impairments can affect the ability to use the UL in everyday activities, very little attention is paid to sensory impairments in stroke rehabilitation. The purpose of this trial is to investigate if sensory re-learning in combination with task-specific training may prove to be more effective than task-specific training alone to improve sensory function of the hand, dexterity, the ability to use the hand in daily activities, perceived participation, and life satisfaction...
April 17, 2018: Trials
https://www.readbyqxmd.com/read/29643600/the-effect-of-fluidotherapy-on-hand-dexterity-and-activities-of-daily-living-in-patients-with-edema-on-stroke
#6
Sang Woo Han, Mi-Sun Lee
[Purpose] The purpose of this study was to investigate the effect of fluidotherapy on hand's dexterity and activities of daily living for stroke patients with upper limb edema. [Subjects and Methods] The objective of the present study was to treat 30 stroke patients with a three-week course of fluidotherapy to investigate the efficacy of such therapy for reduction of edema. For accurate baseline and post-intervention assessment of edema volume, hand edema was measured in the morning using a forearm volumeter...
December 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/29624666/manual-dexterity-but-not-cerebral-palsy-predicts-cognitive-functioning-after-neonatal-stroke
#7
Guillaume Thébault, Sophie Martin, Denis Brouillet, Lionel Brunel, Mickaël Dinomais, Émilie Presles, Joel Fluss, Stéphane Chabrier
AIM: To disentangle the respective impacts of manual dexterity and cerebral palsy (CP) in cognitive functioning after neonatal arterial ischaemic stroke. METHOD: The population included 60 children (21 females, 39 males) with neonatal arterial ischaemic stroke but not epilepsy. The presence of CP was assessed clinically at the age of 7 years and 2 months (range 6y 11mo-7y 8mo) using the definition of the Surveillance of CP in Europe network. Standardized tests (Nine-Hole Peg Test and Box and Blocks Test) were used to quantify manual (finger and hand respectively) dexterity...
April 6, 2018: Developmental Medicine and Child Neurology
https://www.readbyqxmd.com/read/29615956/initial-clinical-evaluation-of-the-modular-prosthetic-limb
#8
Briana N Perry, Courtney W Moran, Robert S Armiger, Paul F Pasquina, Jamie W Vandersea, Jack W Tsao
The Modular Prosthetic Limb (MPL) was examined for its feasibility and usability as an advanced, dexterous upper extremity prosthesis with surface electromyography (sEMG) control in with two individuals with below-elbow amputations. Compared to currently marketed prostheses, the MPL has a greater number of sequential and simultaneous degrees of motion, as well as wrist modularity, haptic feedback, and individual digit control. The MPL was successfully fit to a 33-year-old with a trans-radial amputation (TR01) and a 30-year-old with a wrist disarticulation amputation (TR02)...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29607671/the-applied-effectiveness-of-clay-art-therapy-for-patients-with-parkinson-s-disease
#9
Young-Sil Bae, Dong-Hee Kim
This study investigates how clay art therapy affects Parkinson's disease patients' overall mental and physical condition as well as future treatment potentiality. The research was nonequivalent control groups pre and post study. A total of 54 patients with Parkinson's disease (control = 28, experimental = 26) were recruited from 3 setting locations in South Korea. Test measures were completed before and after the 16 sessions. The experimental group received two 80-minute evaluations per week for 8 weeks. Demographic information: hand dexterity, self-expression, mood depression, and quality of life measurements...
January 2018: J Evid Based Integr Med
https://www.readbyqxmd.com/read/29606205/hominin-hand-bone-fossils-from-sterkfontein-caves-south-africa-1998-2003-excavations
#10
Travis Rayne Pickering, Jason L Heaton, Ron J Clarke, Dominic Stratford
We describe eleven hominin metacarpals and phalanges recovered from Jacovec Cavern and Member 4 of the Sterkfontein Formation between 1998 and 2003. Collectively, the fossils date in excess of 2.0 Ma, and are probably attributable to Australopithecus africanus and/or Australopithecus prometheus. When combined with results of previous studies on Australopithecus postcranial functional morphology, the new data presented here suggest that at least some late Pliocene and/or early Pleistocene hominins from Sterkfontein were arboreally adept...
May 2018: Journal of Human Evolution
https://www.readbyqxmd.com/read/29605519/a-new-direct-measure-of-thumb-use-in-children-after-index-pollicization-for-congenital-thumb-hypoplasia
#11
Kathleen M Kollitz, Wendy A Tomhave, Ann E Van Heest, Steven L Moran
PURPOSE: After index pollicization for congenital thumb hypoplasia, time-based hand dexterity tests do not indicate whether the new thumb is being used by a child. The Thumb Grasp and Pinch assessment (T-GAP) is a new outcome measure that classifies grasp and pinch styles to quantify use of the new thumb. The goal of this study was to establish concurrent validity and construct validity in the T-GAP. METHODS: Data from children treated with index finger pollicization for congenital thumb hypoplasia were retrospectively reviewed...
March 28, 2018: Journal of Hand Surgery
https://www.readbyqxmd.com/read/29581684/robotic-pancreaticoduodenectomy-single-surgeon-initial-experience
#12
Mingjun Wang, Yunqiang Cai, Yongbin Li, Bing Peng
Minimally invasive surgery has gained increasing acceptance over the last few years, which has expanded to pancreaticoduodenectomy. Laparoscopic pancreaticoduodenectomy has been determined to be a feasible, safe, and effective procedure in an experienced surgeon's hands, but the adaptations to the clumsy instruments are needed. The improved dexterity of the Da Vinci robotic system provides a good opportunity to perform this challenging procedure in the minimally invasive context. The aim of this study was to share our preliminary experience of totally robotic pancreaticoduodenectomy...
February 2018: Indian Journal of Surgery
https://www.readbyqxmd.com/read/29580245/the-clinical-relevance-of-advanced-artificial-feedback-in-the-control-of-a-multi-functional-myoelectric-prosthesis
#13
Marko Markovic, Meike A Schweisfurth, Leonard F Engels, Tashina Bentz, Daniela Wüstefeld, Dario Farina, Strahinja Dosen
BACKGROUND: To effectively replace the human hand, a prosthesis should seamlessly respond to user intentions but also convey sensory information back to the user. Restoration of sensory feedback is rated highly by the prosthesis users, and feedback is critical for grasping in able-bodied subjects. Nonetheless, the benefits of feedback in prosthetics are still debated. The lack of consensus is likely due to the complex nature of sensory feedback during prosthesis control, so that its effectiveness depends on multiple factors (e...
March 27, 2018: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/29577305/aberrant-cortical-excitability-reflects-the-loss-of-hand-dexterity-in-musician-s-dystonia
#14
Shinichi Furuya, Kazumasa Uehara, Takashi Sakamoto, Takashi Hanakawa
Focal task-specific dystonia (FTSD) compromises dexterous movements. A proposed pathophysiological mechanism of FTSD involves malfunction of the motor cortex (M1). However, no evidence is yet available regarding whether and how malfunctions of M1 are responsible for the loss of motor dexterity. Here, we addressed this issue by assessing both M1 excitability and detailed movement parameters, as well as their relationships. Transcranial magnetic stimulation was applied over M1 in twenty pianists with FTSD, twenty healthy pianists, and twenty non-musicians...
March 25, 2018: Journal of Physiology
https://www.readbyqxmd.com/read/29559417/wrist-position-sense-acuity-and-its-relation-to-motor-dysfunction-in-children-with-developmental-coordination-disorder
#15
Yu-Ting Tseng, Chia-Liang Tsai, Fu-Chen Chen, Jürgen Konczak
This study obtained objective measures of wrist position sense to verify that children with DCD have proprioceptive deficits. In addition, it examined the relationship of wrist proprioceptive impairment with fine motor and balance function. Twenty children with DCD and thirty typically developing children (TD) aged 10-11 years old were recruited and screened using the Movement Assessment Battery for Children (MABC-2). The DCD group had total MABC-2 score below 5th percentile, and TD group was above 25th percentile...
March 17, 2018: Neuroscience Letters
https://www.readbyqxmd.com/read/29545767/involuntary-neuromuscular-coupling-between-the-thumb-and-finger-of-stroke-survivors-during-dynamic-movement
#16
Christopher L Jones, Derek G Kamper
Finger-thumb coordination is crucial to manual dexterity but remains incompletely understood, particularly following neurological injury such as stroke. While being controlled independently, the index finger and thumb especially must work in concert to perform a variety of tasks requiring lateral or palmar pinch. The impact of stroke on this functionally critical sensorimotor control during dynamic tasks has been largely unexplored. In this study, we explored finger-thumb coupling during close-open pinching motions in stroke survivors with chronic hemiparesis...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29545705/the-effect-of-fine-motor-skills-on-handwriting-legibility-in-preschool-age-children
#17
Sang-Min Seo
[Purpose] The purpose of this study was to examine the effect that fine motor skills have on handwriting legibility in children of preschool age. [Subjects and Methods] The subjects of this study were 52 children of normal growth and development. In order to ascertain handwriting legibility, a Korean alphabet writing assessment was used; to measure fine motor skills, fine motor precision and manual dexterity, sub-items of BOT-2 were measured. Furthermore, in order to measure in-hand manipulation skills, a Functional Dexterity Test was conducted...
February 2018: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/29540748/structural-changes-in-hand-related-cortical-areas-after-median-nerve-injury-and-repair
#18
Per F Nordmark, Christina Ljungberg, Roland S Johansson
Transection of the median nerve typically causes lifelong restriction of fine sensory and motor skills of the affected hand despite the best available surgical treatment. Inspired by recent findings on activity-dependent structural plasticity of the adult brain, we used voxel-based morphometry to analyze the brains of 16 right-handed adults who more than two years earlier had suffered injury to the left or right median nerve followed by microsurgical repair. Healthy individuals served as matched controls. Irrespective of side of injury, we observed gray matter reductions in left ventral and right dorsal premotor cortex, and white matter reductions in commissural pathways interconnecting those motor areas...
March 14, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29540617/illusory-movement-perception-improves-motor-control-for-prosthetic-hands
#19
Paul D Marasco, Jacqueline S Hebert, Jon W Sensinger, Courtney E Shell, Jonathon S Schofield, Zachary C Thumser, Raviraj Nataraj, Dylan T Beckler, Michael R Dawson, Dan H Blustein, Satinder Gill, Brett D Mensh, Rafael Granja-Vazquez, Madeline D Newcomb, Jason P Carey, Beth M Orzell
To effortlessly complete an intentional movement, the brain needs feedback from the body regarding the movement's progress. This largely nonconscious kinesthetic sense helps the brain to learn relationships between motor commands and outcomes to correct movement errors. Prosthetic systems for restoring function have predominantly focused on controlling motorized joint movement. Without the kinesthetic sense, however, these devices do not become intuitively controllable. We report a method for endowing human amputees with a kinesthetic perception of dexterous robotic hands...
March 14, 2018: Science Translational Medicine
https://www.readbyqxmd.com/read/29528105/manual-dexterity-in-young-and-healthy-older-adults-1-age-and-gender-related-differences-in-unimanual-and-bimanual-performance
#20
Olena Vasylenko, Marta M Gorecka, Claudia Rodríguez-Aranda
This study aimed to better characterize age-related differences in dexterity by using an integrative approach where movement times and kinematics were measured for both hands. Forty-five young (age 19-31) and 55 healthy older adults (age 60-88) were evaluated during unimanual and bimanual performance of the Purdue Pegboard Test. Gender effects were also assessed. From video-recorded data, movement times and kinematics were obtained for reaching, grasping, transport, and inserting. Results showed that older adults had longer movement times for grasping and inserting with the right hand, and across all movements with the left hand...
March 12, 2018: Developmental Psychobiology
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