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https://www.readbyqxmd.com/read/28549364/-an-option-to-restore-ulnar-intrinsic-muscles-when-the-anterior-interosseus-nerve-is-not-available
#1
G A González-Trevizo
BACKGROUND: The peripheral nerve injuries are devastating for the patient; the classic reconstructive options are the Nerve Graft and Tendon Transfers. Lately the Nerve Transfers are being used more and more broadly. They are an excellent option on early injuries and when the motor plate is still alive. The advantages are numerous, because the functional recovery is much better. METHODS AND RESULTS: We report the case of a patient who sustained and injury on the median and ulnar nerve, so the EDQ and ECU branches were used to restore the Ulnar Intrinsic Function...
November 2016: Acta Ortopédica Mexicana
https://www.readbyqxmd.com/read/28549131/a-novel-cortical-target-to-enhance-hand-motor-output-in-humans-with-spinal-cord-injury
#2
Jinyi Long, Paolo Federico, Monica A Perez
A main goal of rehabilitation strategies in humans with spinal cord injury is to strengthen transmission in spared neural networks. Although neuromodulatory strategies have targeted different sites within the central nervous system to restore motor function following spinal cord injury, the role of cortical targets remain poorly understood. Here, we use 180 pairs of transcranial magnetic stimulation for ∼30 min over the hand representation of the motor cortex at an interstimulus interval mimicking the rhythmicity of descending late indirect (I) waves in corticospinal neurons (4...
June 1, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/28548032/impact-of-age-sex-socioeconomic-status-and-physical-activity-on-associated-movements-and-motor-speed-in-preschool-children
#3
Tanja H Kakebeeke, Annina E Zysset, Nadine Messerli-Bürgy, Aziz Chaouch, Kerstin Stülb, Claudia S Leeger-Aschmann, Einat A Schmutz, Amar Arhab, Valentin Rousson, Susi Kriemler, Simone Munsch, Jardena J Puder, Oskar G Jenni
INTRODUCTION: Young children generally show contralateral associated movements (CAMs) when they are making an effort to perform a unimanual task. CAM and motor speed are two relevant aspects of motor proficiency in young children. These CAMs decrease over age, while motor speed increases. As both CAM and motor speed are associated with age, we were interested in whether these two parameters are also linked with each other. METHOD: In this study, three manual dexterity tasks with the dominant and nondominant hands (pegboard, repetitive hand, and repetitive finger tasks) were used to investigate the effect of covariates (age, sex, socioeconomic status, total physical activity) on both motor speed and CAMs in preschool children...
May 26, 2017: Journal of Clinical and Experimental Neuropsychology
https://www.readbyqxmd.com/read/28540014/toward-the-art-of-robotic-assisted-vitreoretinal-surgery
#4
Amir Molaei, Ebrahim Abedloo, Marc D de Smet, Sare Safi, Milad Khorshidifar, Hamid Ahmadieh, Mohammad Azam Khosravi, Narsis Daftarian
New technological progress in robotics has brought many beneficial clinical applications. Currently, computer integrated robotic surgery has gained clinical acceptance for several surgical procedures. Robotically assisted eye surgery is envisaged as a promising solution to overcome the shortcomings inherent to conventional surgical procedures as in vitreoretinal surgeries. Robotics by its high precision and fine mechanical control can improve dexterity, cancel tremor, and allow highly precise remote surgical capability, delicate vitreoretinal manipulation capabilities...
April 2017: Journal of Ophthalmic & Vision Research
https://www.readbyqxmd.com/read/28533593/effects-of-repeated-vibratory-stimulation-of-wrist-and-elbow-flexors-on-hand-dexterity-strength-and-sensory-function-in-patients-with-chronic-stroke-a-pilot-study
#5
Won-Ho Choi
[Purpose] The aim of this study was to investigate the effects of repeated vibratory stimulation to muscles related to hand functions on dexterity, strength, and sensory function in patients with chronic stroke. [Subjects and Methods] A total of 10 stroke patients with hemiplegia participated in this study. They were divided into two groups: a) Experimental and b) Control, with five randomly selected subjects for each group. The experimental group received vibratory stimulation, while the control group received the traditional physical therapy...
April 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28524811/impact-of-tactile-sensation-on-dexterity-a-cross-sectional-study-of-patients-with-impaired-hand-function-after-stroke
#6
Elena L Pavlova, Jörgen Borg
The authors sought to explore the impact of tactile sensation on manual dexterity and the validity of the strength-dexterity test in subjects with chronic impairments after stroke in a cross-sectional study of 24 patients with impaired hand function after stroke. Dexterity was assessed by the strength-dexterity test, Box and Blocks, and Nine-Hole Peg Test, and the ABILHAND questionnaire. Sensation was measured by pinprick, cotton-wool, graphesthesia, and 2-point discrimination tests. Sensation in the paretic hand had strong association with paretic hand performance in the strength-dexterity test and Nine-Hole Peg Test and explained 13% of the variance...
May 19, 2017: Journal of Motor Behavior
https://www.readbyqxmd.com/read/28509639/factors-associated-with-simulator-assessed-laparoscopic-surgical-skills-of-veterinary-students
#7
Jessica J Kilkenny, Ameet Singh, Carolyn L Kerr, Deep K Khosa, Boel A Fransson
OBJECTIVE To determine whether simulator-assessed laparoscopic skills of veterinary students were associated with training level and prior experience performing nonlaparoscopic veterinary surgery and other activities requiring hand-eye coordination and manual dexterity. DESIGN Experiment. SAMPLE 145 students without any prior laparoscopic surgical or fundamentals of laparoscopic surgery (FLS) simulator experience in years 1 (n = 39), 2 (34), 3 (39), and 4 (33) at a veterinary college. PROCEDURES A questionnaire was used to collect data from participants regarding experience performing veterinary surgery, playing video games, and participating in other activities...
June 1, 2017: Journal of the American Veterinary Medical Association
https://www.readbyqxmd.com/read/28504971/robust-tactile-sensory-responses-in-finger-area-of-primate-motor-cortex-relevant-to-prosthetic-control
#8
Karen E Schroeder, Zachary Irwin, Autumn Bullard, David Thompson, Nicole Bentley, William Stacey, Parag Patil, Cynthia Chestek
OBJECTIVE:  Challenges in improving the performance of dexterous upper-limb brain-machine interfaces (BMIs) have prompted renewed interest in quantifying the amount and type of sensory information naturally encoded in primary motor cortex (M1). Previous single unit studies in monkeys showed M1 is responsive to tactile stimulation, as well as passive and active movement of the limbs. However, recent work in this area has focused primarily on proprioception. Here we examined instead how tactile somatosensation of the hand and fingers is represented in M1...
May 15, 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/28502698/effectiveness-of-a-fine-motor-skills-rehabilitation-program-on-upper-limb-disability-manual-dexterity-pinch-strength-range-of-fingers-motion-performance-in-activities-of-daily-living-functional-independency-and-general-self-efficacy-in-hand-osteoarthritis-a
#9
Jose Manuel Pérez-Mármol, Ma Carmen García-Ríos, María Azucena Ortega-Valdivieso, Enrique Elías Cano-Deltell, María Isabel Peralta-Ramírez, Kelly Ickmans, María Encarnación Aguilar-Ferrándiz
STUDY DESIGN: A randomized clinical trial. INTRODUCTION: Rehabilitation treatments for improving fine motor skills (FMS) in hand osteoarthritis (HOA) have not been well explored yet. PURPOSE OF THE STUDY: To assess the effectiveness of a rehabilitation program on upper limb disability, independence of activities of daily living (ADLs), fine motor abilities, functional independency, and general self-efficacy in older adults with HOA. METHODS: About 45 adults (74-86 years) with HOA were assigned to an experimental group for completing an FMS intervention or a control group receiving conventional occupational therapy...
May 11, 2017: Journal of Hand Therapy: Official Journal of the American Society of Hand Therapists
https://www.readbyqxmd.com/read/28501480/assessing-manual-dexterity-comparing-the-workability-rate-of-manipulation-test-with-the-minnesota-manual-dexterity-test
#10
Ying-Chih Wang, Rick Wickstrom, Sheng-Che Yen, Jay Kapellusch, Kimberly A Grogan
STUDY DESIGN: Cross-sectional study. INTRODUCTION: The WorkAbility Rate of Manipulation Test (WRMT), an adaptation of the Minnesota Manual Dexterity Test (MMDT), contains a revised board and protocols to improve its utility for therapy or fitness assessment. PURPOSE OF THE STUDY: To describe the development and preliminary psychometric properties of WRMT. METHODS: Sixty-six healthy participants completed MMDT and WRMT in a random order followed by a user experience survey...
May 10, 2017: Journal of Hand Therapy: Official Journal of the American Society of Hand Therapists
https://www.readbyqxmd.com/read/28494261/relationship-between-physical-performance-and-self-reported-function-in-healthy-individuals-across-the-lifespan
#11
Jennifer N Baldwin, Marnee J McKay, Claire E Hiller, Niamh Moloney, Elizabeth J Nightingale, Joshua Burns
BACKGROUND: Functional outcome measures in clinical trials of musculoskeletal conditions need to be meaningful to individuals. OBJECTIVES: To investigate the relationship between physical performance and self/proxy-reported function in 1000 healthy children and adults. DESIGN: Cross-sectional observational study (1000 Norms Project). METHODS: One thousand males and females aged 3-101 years, healthy by self-report and without major physical disability, were recruited...
May 2, 2017: Musculoskeletal Science & Practice
https://www.readbyqxmd.com/read/28479787/indigenous-inexpensive-practice-models-for-skill-development-in-neuroendoscopy
#12
Jitin Bajaj, Yad Ram Yadav, Anurag Pateriya, Vijay Parihar, Shailendra Ratre, Amitesh Dubey
INTRODUCTION: Neurosurgery is a branch having a tough learning curve. Residents generally get very less hands-on exposure for advanced procedures like neuroendoscopy. With the limited number of cadavers available and ethical issues associated with animal models, practice models, and simulators are becoming the able alternative. Most of these simulators are very costly. We tried to build indigenous inexpensive practice models that can help in developing most of the skills of neuroendoscopy...
April 2017: Journal of Neurosciences in Rural Practice
https://www.readbyqxmd.com/read/28471060/modeling-and-evaluation-of-hand-eye-coordination-of-surgical-robotic-system-on-task-performance
#13
Yuanqian Gao, Shuxin Wang, Jianmin Li, Aimin Li, Hongbin Liu, Yuan Xing
BACKGROUND: Robotic-assisted minimally invasive surgery changes the direct hand and eye coordination in traditional surgery to indirect instrument and camera coordination, which affects the ergonomics, operation performance, and safety. METHODS: A camera, two instruments, and a target, as the descriptors, are used to construct the workspace correspondence and geometrical relationships in a surgical operation. A parametric model with a set of parameters is proposed to describe the hand-eye coordination of the surgical robot...
May 4, 2017: International Journal of Medical Robotics + Computer Assisted Surgery: MRCAS
https://www.readbyqxmd.com/read/28468268/an-instrumented-glove-to-assess-manual-dexterity-in-simulation-based-neurosurgical-education
#14
Juan Diego Lemos, Alher Mauricio Hernandez, Georges Soto-Romero
The traditional neurosurgical apprenticeship scheme includes the assessment of trainee's manual skills carried out by experienced surgeons. However, the introduction of surgical simulation technology presents a new paradigm where residents can refine surgical techniques on a simulator before putting them into practice in real patients. Unfortunately, in this new scheme, an experienced surgeon will not always be available to evaluate trainee's performance. For this reason, it is necessary to develop automatic mechanisms to estimate metrics for assessing manual dexterity in a quantitative way...
April 29, 2017: Sensors
https://www.readbyqxmd.com/read/28466361/virtual-reality-based-assessment-of-basic-laparoscopic-skills-using-the-leap-motion-controller
#15
Vasileios Lahanas, Constantinos Loukas, Konstantinos Georgiou, Hani Lababidi, Dania Al-Jaroudi
BACKGROUND: The majority of the current surgical simulators employ specialized sensory equipment for instrument tracking. The Leap Motion controller is a new device able to track linear objects with sub-millimeter accuracy. The aim of this study was to investigate the potential of a virtual reality (VR) simulator for assessment of basic laparoscopic skills, based on the low-cost Leap Motion controller. METHODS: A simple interface was constructed to simulate the insertion point of the instruments into the abdominal cavity...
May 2, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28446119/neurobionics-and-the-brain-computer-interface-current-applications-and-future-horizons
#16
REVIEW
Jeffrey V Rosenfeld, Yan Tat Wong
The brain-computer interface (BCI) is an exciting advance in neuroscience and engineering. In a motor BCI, electrical recordings from the motor cortex of paralysed humans are decoded by a computer and used to drive robotic arms or to restore movement in a paralysed hand by stimulating the muscles in the forearm. Simultaneously integrating a BCI with the sensory cortex will further enhance dexterity and fine control. BCIs are also being developed to: provide ambulation for paraplegic patients through controlling robotic exoskeletons; restore vision in people with acquired blindness; detect and control epileptic seizures; and improve control of movement disorders and memory enhancement...
May 1, 2017: Medical Journal of Australia
https://www.readbyqxmd.com/read/28436890/in-situ-force-augmentation-improves-surface-contact-and-force-control
#17
Randy Lee, Roberta Klatzky, George Stetten
Surgeons routinely perform surgery with noisy, sub-threshold, or obscured visual and haptic feedback, either due to the necessary surgical approach, or because the systems on which they are operating are exceedingly delicate. Technological solutions incorporating haptic feedback augmentation have been proposed to address these difficulties, but the consequences for motor control have not been directly investigated and quantified. In this paper, we present two isometric force generation tasks performed with a hand-held robotic tool that provides in-situ augmentation of force sensation...
April 24, 2017: IEEE Transactions on Haptics
https://www.readbyqxmd.com/read/28401502/the-effects-of-age-and-sex-on-hand-movement-structure
#18
A Sebastjan, A Skrzek, Z Ignasiak, T Sławińska
The aim was to investigate the effects of age and sex on hand function and ascertain age-related changes (magnitude and rate) by assessing a broad range of functional tasks with the dominant and non-dominant hands. A representative sample of 635 adults (114 males and 491 females) aged 50 years and over completed motor performance series of the Vienna Test System Parametric and non-parametric analysis and simple linear regression was used to examine the relationships. Significant relationships were observed between task performance and age and sex, although the contributions of both factors differed by varying degree...
April 11, 2017: Aging Clinical and Experimental Research
https://www.readbyqxmd.com/read/28397018/functional-capacity-evaluation-in-upper-limb-reduction-deficiency-and-amputation-development-and-pilot-testing
#19
S G Postema, R M Bongers, M F Reneman, C K van der Sluis
Purpose To develop and pilot test a functional capacity evaluation (FCE) for individuals with upper limb absence (ULA) due to reduction deficiency or amputation, and to examine the relationship between FCE results and presence of musculoskeletal complaints (MSC). Method Five tests (overhead lifting, overhead working, repetitive reaching, fingertip dexterity, and handgrip strength) were selected and adapted if necessary. The newly developed FCE, called FCE-One-Handed (FCE-OH), was pilot tested in 20 adults individuals with ULA, and 20 matched controls...
April 10, 2017: Journal of Occupational Rehabilitation
https://www.readbyqxmd.com/read/28383292/corticomotor-excitability-effects-of-peripheral-nerve-electrical-stimulation-to-the-paretic-arm-in-stroke
#20
Hao Liu, Stephanie S Y Au-Yeung
OBJECTIVE: This study aimed to examine the corticomotor excitability changes after peripheral nerve electrical stimulation (PNS) on the stroke-impaired arm. DESIGN: This randomized cross-over study included 32 subjects with chronic stroke. They received a 1-hr PNS or placebo PNS by random order to the ulnar and radial nerves of the paretic arm in separate sessions. The primary outcome was excitability of the corticospinal projections for the contralateral first dorsal interosseous hand muscle in terms of slope of the recruitment curve, peak motor-evoked potential amplitude, and duration of the cortical silent period, measured with transcranial magnetic stimulation on both cerebral hemispheres...
April 5, 2017: American Journal of Physical Medicine & Rehabilitation
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