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https://www.readbyqxmd.com/read/28227645/myoelectric-intuitive-control-and-transcutaneous-electrical-stimulation-of-the-forearm-for-vibrotactile-sensation-feedback-applied-to-a-3d-printed-prosthetic-hand
#1
Enrique I Germany, Esteban J Pino, Pablo E Aqueveque, Enrique I Germany, Esteban J Pino, Pablo E Aqueveque, Enrique I Germany, Pablo E Aqueveque, Esteban J Pino
This paper presents the development of a myoelectric prosthetic hand based on a 3D printed model. A myoelectric control strategy based on artificial neural networks is implemented on a microcontroller for online position estimation. Position estimation performance achieves a correlation index of 0.78. Also a study involving transcutaneous electrical stimulation was performed to provide tactile feedback. A series of stimulations with controlled parameters were tested on five able-body subjects. A single channel stimulator was used, positioning the electrodes 8 cm on the wrist over the ulnar and median nerve...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226286/peripheral-nerve-ultrasonography-in-patients-with-transthyretin-amyloidosis
#2
Simon Podnar, Stayko Sarafov, Ivailo Tournev, Gregor Omejec, Janez Zidar
OBJECTIVE: To systematically study peripheral nerve morphology in patients with transthyretin (TTR) amyloidosis and TTR gene mutation carriers using high-resolution ultrasonography (US). METHODS: In this prospective cross-sectional study we took a structured history, performed neurological examination, and measured peripheral nerve cross-sectional areas (CSAs) bilaterally at 28 standard locations using US. Demographic and US findings were compared to controls. RESULTS: Peripheral nerve CSAs were significantly larger in 33 patients with familial amyloid polyneuropathy (FAP) compared to 50 controls, most dramatically at the common entrapment sites (median nerve at the wrist, ulnar nerve at the elbow), and in the proximal nerve segments (median nerve in the upper arm, sciatic nerve in the thigh)...
January 29, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28225813/the-effects-of-cervical-transcutaneous-spinal-direct-current-stimulation-on-motor-pathways-supplying-the-upper-limb-in-humans
#3
Siobhan C Dongés, Jessica M D'Amico, Jane E Butler, Janet L Taylor
Non-invasive, weak direct current stimulation can induce changes in excitability of underlying neural tissue. Many studies have used transcranial direct current stimulation to induce changes in the brain, however more recently a number of studies have used transcutaneous spinal direct current stimulation to induce changes in the spinal cord. This study further characterises the effects following cervical transcutaneous spinal direct current stimulation on motor pathways supplying the upper limb. In Study 1, on two separate days, participants (n = 12, 5 F) received 20 minutes of either real or sham direct current stimulation at 3 mA through electrodes placed in an anterior-posterior configuration over the neck (anode anterior)...
2017: PloS One
https://www.readbyqxmd.com/read/28221301/electrodiagnostic-characterization-of-hereditary-neuropathy-with-liability-to-pressure-palsies
#4
Sachiko Takahashi, Marvin Chum, Kurt Kimpinski
OBJECTIVES: The study objective was electrodiagnostic characterization of a large cohort of patients with genetically confirmed hereditary neuropathy with liability to pressure palsies (HNPP). METHODS: A retrospective review was conducted on all patients with HNPP seen at the neuromuscular clinic (London, Canada) from 1977 to 2015. Clinical data obtained included patient characteristics, examination findings, and nerve conduction study results. RESULTS: A total of 46 patients were analyzed...
March 2017: Journal of Clinical Neuromuscular Disease
https://www.readbyqxmd.com/read/28220906/experiences-with-preventing-carpal-tunnel-syndrome-in-an-automotive-plant
#5
Věra Žídková, Marie Nakládalová, Jana Zapletalová, Zdeněk Nakládal, Helena Kollárová
OBJECTIVES: Carpal tunnel syndrome (CTS) is a common occupational disease. The aim was to assess the effect of preventive measures in automotive assembly workers. MATERIAL AND METHODS: The analysis summarizes data from annual crosssectional studies. The 7-year analysis of data was based on medical records obtained from an occupational physician and inspections carried out at the workplace where targeted preventive measures were introduced, including better ergonomic arrangement of the workplace, technical adjustments facilitating the work, preventive nerve conduction studies (NCS) testing of the median nerve once a year, switching of workers and their targeted rotation within the workplace...
February 21, 2017: International Journal of Occupational Medicine and Environmental Health
https://www.readbyqxmd.com/read/28220194/-diagnostic-ability-of-power-measurement-of-different-grip-forms-for-distal-median-nerve-lesion
#6
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/28219129/-effects-of-sevoflurane-and-desflurane-on-pharmacodynamics-of-rocuronium-in-children
#7
D X Kang, Y Q Rao, B Ji, J Li
Objective: To observe the intraoperative influences on pharmacodynamics of rocuronium in children inhaling sevoflurane and desflurane for 40 min balance. Methods: Ninety children (ASAⅠ-Ⅱ) undergoing elective surgery with general anesthesia in Second Affiliated Hospital & Yuying Children's Hospital, Wenzhou Medical University from July 2015 to May 2016 were randomly assigned into six groups (n=15): Sevoflurane group (group S1 and S2), Desflurane group (group D1 and D2) and Propofol group (group P1 and P2)...
February 14, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
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
#8
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/28214293/ultra-high-frequency-ultrasound-of-fascicles-in-the-median-nerve-at-the-wrist
#9
Michael S Cartwright, Vanessa Baute, James B Caress, Francis O Walker
INTRODUCTION: An ultra high-frequency (70 MHz) ultrasound device has recently been approved for human use. This study was conducted to determine if this device facilitates counting of fascicles within the median nerve at the wrist. METHODS: Twenty healthy volunteers underwent imaging of the median nerve at the wrist bilaterally. The number of fascicles in each nerve was counted by two independent raters. RESULTS: The mean fascicle number was 22...
February 18, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/28211240/phenotypic-spectrum-of-charcot-marie-tooth-disease-due-to-litaf-simple-mutations-a-study-of-18-patients
#10
R Guimarães-Costa, R Iancu Ferfoglia, S Leonard-Louis, F Ziegler, L Magy, E Fournier, O Dubourg, P Bouche, T Maisonobe, A Lacour, A Moerman, P Latour, T Stojkovic
BACKGROUND AND PURPOSE: Charcot-Marie-Tooth (CMT) 1C due to mutations in LITAF/SIMPLE is a rare subtype amongst the autosomal dominant demyelinating forms of CMT. Our objective was to report the clinical and electrophysiological characteristics of 18 CMT1C patients and compare them to 20 patients with PMP22 mutations: 10 CMT1A patients and 10 patients with hereditary neuropathy with liability to pressure palsies (HNPP). METHODS: Charcot-Marie-Tooth 1C patients were followed-up in referral centres for neuromuscular diseases or were identified by familial survey...
March 2017: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
https://www.readbyqxmd.com/read/28209312/is-carpal-tunnel-syndrome-present-in-acute-stroke-patients-an-investigative-study-using-clinical-and-imaging-screening-tools
#11
Chen Lin, Aaron I Loochtan, Brian Dresser, Jianhong Chang, Alfredo E Farjat, Kingshuk Choudhury, Lisa D Hobson-Webb
Carpal tunnel syndrome (CTS) is known to develop post-stroke. Median nerve ultrasound (US) is an inexpensive, effective means of screening. In this prospective feasibility study, we compared the ability of the physical exam, the Boston Carpal Tunnel Questionnaire (BCTQ) and median nerve US to screen for carpal tunnel syndrome (CTS) within 72hours of stroke onset. We enrolled 24 consecutive patients. Using US, 19 (79%, p=0.0386) of the 24 patients screened positive for CTS on the paretic side and 20 (83%, p=0...
February 10, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28208961/fracture-supracondylar-humerus-a-review
#12
REVIEW
Vineet Kumar, Ajai Singh
Fracture supracondylar humerus is one of the most common fractures encountered in pediatric age group at all levels (both rural and urban). Thus it needs a special review in its management protocol as per the changing trend. Modified Gartland classification is the most accepted classification and has its importance in decision making regarding management and prognosis. Neurovascular complications are mostly associated with Type III A, III B and Type IV variety and they most of the time need surgical intervention for stabilization, exploration of brachial artery, sometimes median nerve exploration and reduction of fracture...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28208850/motor-nerve-conduction-velocity-in-postmenopausal-women-with-peripheral-neuropathy
#13
Akanksha Singh, Naiyer Asif, Paras Nath Singh, Mohd Mobarak Hossain
INTRODUCTION: The post-menopausal phase is characterized by a decline in the serum oestrogen and progesterone levels. This phase is also associated with higher incidence of peripheral neuropathy. AIM: To explore the relationship between the peripheral motor nerve status and serum oestrogen and progesterone levels through assessment of Motor Nerve Conduction Velocity (MNCV) in post-menopausal women with peripheral neuropathy. MATERIALS AND METHODS: This cross-sectional study was conducted at Jawaharlal Nehru Medical College during 2011-2013...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28207605/ultrasound-guided-fenestration-of-the-carpal-ligament-using-a-double-needle-approach
#14
Gloria E Hwang, Sanjay Kumbar, Todd Stitik, John S Georgy, Hoss Hanna
Injection techniques for carpal tunnel syndrome have evolved from landmark palpation injection techniques to more accurate ultrasound-guided approaches. Presented is a case report describing a technique serendipitously discovered during a carpal ligament fenestration. The case involved a 66-year-old man with a diagnosis of carpal tunnel syndrome. After a failed attempt at treatment using a wrist splint and activity modification, he was treated by median nerve hydrodissection with 100% temporary pain relief...
February 15, 2017: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/28206829/validity-of-low-contrast-letter-acuity-as-a-visual-performance-outcome-measure-for-multiple-sclerosis
#15
Laura J Balcer, Jenelle Raynowska, Rachel Nolan, Steven L Galetta, Raju Kapoor, Ralph Benedict, Glenn Phillips, Nicholas LaRocca, Lynn Hudson, Richard Rudick
Low-contrast letter acuity (LCLA) has emerged as the leading outcome measure to assess visual disability in multiple sclerosis (MS) research. As visual dysfunction is one of the most common manifestations of MS, sensitive visual outcome measures are important in examining the effect of treatment. Low-contrast acuity captures visual loss not seen in high-contrast visual acuity (HCVA) measurements. These issues are addressed by the MS Outcome Assessments Consortium (MSOAC), including representatives from advocacy organizations, Food and Drug Administration (FDA), European Medicines Agency (EMA), National Institute of Neurological Disorders and Stroke (NINDS), academic institutions, and industry partners along with persons living with MS...
February 1, 2017: Multiple Sclerosis: Clinical and Laboratory Research
https://www.readbyqxmd.com/read/28199538/analysis-of-factors-associated-with-rhytidectomy-malpractice-litigation-cases
#16
Aron Kandinov, Sean Mutchnick, Vaibhuv Nangia, Peter F Svider, Giancarlo F Zuliani, Mahdi A Shkoukani, Michael A Carron
Importance: This study investigates the financial burden of medical malpractice litigation associated with rhytidectomies, as well as factors that contribute to litigation and poor defendant outcomes, which can help guide physician practices. Objective: To comprehensively evaluate rhytidectomy malpractice litigation. Data Sources and Study Selection: Jury verdict and settlement reports related to rhytidectomy malpractice litigations were obtained using the Westlaw Next database...
February 9, 2017: JAMA Facial Plastic Surgery
https://www.readbyqxmd.com/read/28198531/superficial-brachial-artery-a-possible-cause-for-idiopathic-median-nerve-entrapment-neuropathy
#17
Pilani Nkomozepi, Nkosi Xhakaza, Elaine Swanepoel
Nerve entrapment syndromes occur because of anatomic constraints at specific locations in both upper and lower limbs. Anatomical locations prone to nerve entrapment syndromes include sites where a nerve courses through fibro-osseous or fibromuscular tunnels or penetrates a muscle. The median nerve (MN) can be entrapped by the ligament of Struthers; thickened biceps aponeurosis; between the superficial and deep heads of the pronator teres muscle and by a thickened proximal edge of flexor digitorum superficialis muscle...
February 15, 2017: Folia Morphologica (Warsz)
https://www.readbyqxmd.com/read/28196631/effects-of-12-weeks-of-chiropractic-care-on-central-integration-of-dual-somatosensory-input-in-chronic-pain-patients-a-preliminary-study
#18
Heidi Haavik, Imran Khan Niazi, Kelly Holt, Bernadette Murphy
OBJECTIVE: The purpose of this preliminary study was to assess whether the dual somatosensory evoked potential (SEP) technique is sensitive enough to measure changes in cortical intrinsic inhibitory interactions in patients with chronic neck or upper extremity pain and, if so, whether changes are associated with changes in pain scores. METHODS: The dual peripheral nerve stimulation SEP ratio technique was used for 6 subjects with a history of chronic neck or upper limb pain...
February 10, 2017: Journal of Manipulative and Physiological Therapeutics
https://www.readbyqxmd.com/read/28196443/commentary-on-nerve-grafts-bridging-the-thenar-branch-of-the-median-nerve-to-the-ulnar-nerve-to-enhance-nerve-recovery-a-report-of-three-cases
#19
J Isaacs
No abstract text is available yet for this article.
March 2017: Journal of Hand Surgery, European Volume
https://www.readbyqxmd.com/read/28195898/ultrasound-guided-glossopharyngeal-nerve-block-a-cadaver-and-a-volunteer-sonoanatomy-study
#20
Josip Ažman, Tatjana Stopar Pintaric, Erika Cvetko, Kamen Vlassakov
BACKGROUND AND OBJECTIVES: Glossopharyngeal nerve (GPN) blocks are usually performed by topical, intraoral, or peristyloid approaches, which carry significant complication risks due to the proximity of important neurovascular structures. This study presents a proof of concept for a new ultrasound (US)-guided technique, which would block the GPN distally, in the parapharyngeal space, away from the immediate vicinity of high-risk collateral structures. METHODS: Five cadaver heads were dissected, and the location of the GPN was explored bilaterally...
March 2017: Regional Anesthesia and Pain Medicine
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