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https://www.readbyqxmd.com/read/28054504/analysis-of-muscle-fiber-conduction-velocity-during-finger-flexion-and-extension-after-stroke
#1
Megan O Conrad, Dan Qiu, Gilles Hoffmann, Ping Zhou, Derek G Kamper
BACKGROUND: Stroke survivors experience greater strength deficits during finger extension than finger flexion. Prior research indicates relatively little observed weakness is directly attributable to muscle atrophy. Changes in other muscle properties, however, may contribute to strength deficits. OBJECTIVES: This study measured muscle fiber conduction velocity (MFCV) in a finger flexor and extensor muscle to infer changes in muscle fiber-type after stroke. METHODS: Conduction velocity was measured using a linear EMG surface electrode array for both extensor digitorum communis and flexor digitorum superficialis in 12 stroke survivors with chronic hand hemiparesis and five control subjects...
January 5, 2017: Topics in Stroke Rehabilitation
https://www.readbyqxmd.com/read/28027238/free-functioning-gracilis-muscle-transfer-for-elbow-flexion-reconstruction-after-traumatic-adult-brachial-pan-plexus-injury-where-is-the-optimal-distal-tendon-attachment-for-elbow-flexion
#2
Andrés A Maldonado, Santiago Romero-Brufau, Michelle F Kircher, Robert J Spinner, Allen T Bishop, Alexander Y Shin
BACKGROUND: Reconstruction after pan-plexus root avulsions often includes gracilis free functioning muscle transfer. For elbow flexion reconstruction, the free functioning muscle transfer distal tendon is inserted into the biceps tendon or more distally (i.e., flexor digitorum profundus/flexor pollicis longus tendons) for combined elbow and finger flexion; the theoretical drawback of the latter approach is weaker elbow flexion. The authors compared elbow flexion strength with a biceps tendon versus a flexor digitorum profundus/flexor pollicis longus tendon attachment to determine which insertion point resulted in better elbow flexion...
January 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28026732/-spontaneous-tendon-ruptures-in-the-rheumatoid-hand
#3
J Pech, D Veigl, M Vlček
A spontaneous tendon rupture is a direct consequence of rheumatoid inflammation and can appear without any noticeable impact, often during sleep. The patient then presents with inability to flex or extend metacarpophalageal or interphalangeal joints. Multiple ruptures resulting in impaired function of several fingers can also occur and markedly limit the hand's grip strength. A tear may arise from either mechanical injury to the tendon along its course over bone or connective tissues, or by biochemical action of lysosomal enzymes, released during the inflammation process, on the connective tissue of the tendon...
2016: Acta Chirurgiae Orthopaedicae et Traumatologiae Cechoslovaca
https://www.readbyqxmd.com/read/28000457/daily-physical-activity-impact-in-old-women-bone-density-and-grip-strength
#4
María Carrasco Poyatos, María Dolores Navarro Sánchez, Ignacio Martínez González-Moro, Delia Reche Orenes
INTRODUCTION: Being physically active is related to a better physical functioning in older people, but daily physical activity impact in specific outcomes such as osteoporosis or sarcopenia is still not clear. OBJECTIVE: The main objective of this study is to determine the impact of daily physical activity (DPA) in the bone mineral density and grip strength of old women. The secondary objective is to distinguish between weekday and weekend day scores. METHODS: Forty-two women between 65 and 79 years participated...
November 29, 2016: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/27984216/fingertip-replantation-with-palmar-venous-anastomoses-in-children
#5
Gen Wen, Jia Xu, Yi-Min Chai
BACKGROUND: Fingertip amputation in children is difficult to manage using microsurgical replantation techniques and many salvage procedures have failed owing to the nonavailability of suitable veins for anastomosis in the fingertip. This study reviewed our experience of pediatric fingertip replantation involving palmar venous anastomoses and evaluated the clinical outcomes. METHODS: From October 2008 to May 2013, 21 pediatric fingertips that had been completely amputated at or distal to the distal interphalangeal joint of the finger, or at or distal to the interphalangeal joint of the thumb were managed using complete replantation...
December 14, 2016: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/27979334/quantification-of-weakness-caused-by-distal-median-nerve-lesion-by-dynamometry
#6
Nikolaus Johannes Wachter, Martin Mentzel, Raphaela Hütz, Gert D Krischak, Joachim Gülke
INTRODUCTION: In the assessment of hand and upper limb function, grip strength is of major importance. Use of the JAMAR dynamometer has been an accepted test of grip strength and routinely part of the physical examination. PURPOSE OF THE STUDY: The aim of this study was to determine by means of a median nerve block simulating a patient group if the measurement of different types of grip force can improve the quantification of impairment of the hand beyond the sole power grip measurements...
December 12, 2016: Journal of Hand Therapy: Official Journal of the American Society of Hand Therapists
https://www.readbyqxmd.com/read/27920096/structural-pathways-supporting-swift-acquisition-of-new-visuomotor-skills
#7
Ari E Kahn, Marcelo G Mattar, Jean M Vettel, Nicholas F Wymbs, Scott T Grafton, Danielle S Bassett
Human skill learning requires fine-scale coordination of distributed networks of brain regions linked by white matter tracts to allow for effective information transmission. Yet how individual differences in these anatomical pathways may impact individual differences in learning remains far from understood. Here, we test the hypothesis that individual differences in structural organization of networks supporting task performance predict individual differences in the rate at which humans learn a visuomotor skill...
December 5, 2016: Cerebral Cortex
https://www.readbyqxmd.com/read/27917570/handwriting-difficulties-of-children-with-charcot-marie-tooth-disease-type-1a
#8
Daniel Kunovsky, Reinie Cordier, Paula Bray, Joshua Burns
Hand weakness and impaired manual dexterity have been reported in children with Charcot-Marie-Tooth disease type 1A (CMT1A). This early onset of upper limb involvement might explain frequent clinical referrals for assessment and treatment of impaired handwriting performance. The aim of this study was to examine the impact of CMT1A on handwriting speed and legibility, and identify demographic, anthropometric and physical measures that might relate to handwriting performance. Handwriting speed (Handwriting Speed Test), handwriting legibility (Evaluation Tool of Children's Handwriting-Cursive) and hand strength (hand-held dynamometry of tip pinch, lateral pinch and grip) were assessed in 30 children with CMT1A (aged 8-17 years) and 30 age- and sex-matched controls...
December 5, 2016: Journal of the Peripheral Nervous System: JPNS
https://www.readbyqxmd.com/read/27917188/crispr-cas9-tool-for-qualitative-and-quantitative-plant-genome-editing
#9
REVIEW
Ali Noman, Muhammad Aqeel, Shuilin He
Recent developments in genome editing techniques have aroused substantial excitement among agricultural scientists. These techniques offer new opportunities for developing improved plant lines with addition of important traits or removal of undesirable traits. Increased adoption of genome editing has been geared by swiftly developing Clustered regularly interspaced short palindromic repeats (CRISPR). This is appearing as driving force for innovative utilization in diverse branches of plant biology. CRISPR-Cas9 mediated genome editing is being used for rapid, easy and efficient alteration of genes among diverse plant species...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27914183/interphalangeal-joint-sonography-of-symptomatic-hand-osteoarthritis-clinical-and-functional-correlation
#10
Natalia de Oliva Spolidoro Paschoal, Jamil Natour, Flavia S Machado, Hilda Alcântara Veiga de Oliveira, Rita Nely Vilar Furtado
OBJECTIVES: To assess the correlation between inflammatory sonographic findings (grayscale synovial hypertrophy and power Doppler) and clinical and functional assessments in hand osteoarthritis (symptomatic interphalangeal joints) and to correlate the intraobserver and interobserver reliability of these findings. METHODS: A prospective double-blind study of 60 interphalangeal joints was conducted. The joints were assessed 6 times per year by clinician and sonographer observers...
December 3, 2016: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/27891243/a-comprehensive-musculoskeletal-and-peripheral-nervous-system-assessment-of-war-related-bilateral-upper-extremity-amputees
#11
Mostafa Allami, Batool Mousavi, Mehdi Masoumi, Ehsan Modirian, Hadi Shojaei, Fatemeh Mirsalimi, Maryam Hosseini, Pirouz Pirouzi
BACKGROUND: Upper limb amputations are one of the unpleasant war injuries that armed forces are exposed to frequently. The present study aimed to assess the musculoskeletal and peripheral nervous systems in Iraq-Iran war veterans with bilateral upper extremity amputation. METHODS: The study consisted of taking a history and clinical examinations including demographic data, presence and location of pain, level of amputation, passive and active ranges of movement of the joints across the upper and lower extremities and spine, manual palpation, neurological examination, blood circulation pulses and issues related to a prosthetic limb...
2016: Military Medical Research
https://www.readbyqxmd.com/read/27890154/effects-of-tool-handle-dimension-and-workpiece-orientation-and-size-on-wrist-ulnar-radial-torque-strength-usability-and-discomfort-in-a-wrench-task
#12
Iman Dianat, Soleyman Rahimi, Moein Nedaei, Mohammad Asghari Jafarabadi, Ali E Oskouei
The effects of tool handle dimension (three modified designs of wrenches with 30-50 mm diameter cylindrical handles and traditional design with rectangular cross-sectional (5 mm × 25 mm) handle), workpiece orientation (vertical/horizontal) and workpiece size (small/large) as well as user's hand size on wrist ulnar/radial (U/R) torque strength, usability and discomfort, and also the relationship between these variables were evaluated in a maximum torque task using wrenches. The highest and lowest levels of maximal wrist U/R torque strength were recorded for the 30 mm diameter handle and traditional wrench design, respectively...
March 2017: Applied Ergonomics
https://www.readbyqxmd.com/read/27886831/finger-injuries-in-football-and-rugby
#13
REVIEW
Kate E Elzinga, Kevin C Chung
Football and rugby athletes are at increased risk of finger injuries given the full-contact nature of these sports. Some players may return to play early with protective taping, splinting, and casting. Others require a longer rehabilitation period and prolonged time away from the field. The treating hand surgeon must weigh the benefits of early return to play for the current season and future playing career against the risks of reinjury and long-term morbidity, including post-traumatic arthritis and decreased range of motion and strength...
February 2017: Hand Clinics
https://www.readbyqxmd.com/read/27858573/multiple-nerve-and-tendon-transfers-a-new-strategy-for-restoring-hand-function-in-a-patient-with-c7-t1-brachial-plexus-avulsions
#14
Bin Xu, Zhen Dong, Cheng-Gang Zhang, Yu-Dong Gu
C7-T1 brachial plexus palsies result in a loss of finger motion and hand function. The authors have observed that finger flexion motion can be recovered after a brachialis motor branch transfer. However, finger flexion strength after this procedure merely corresponds to Medical Research Council Grades M2-M3, lowering the grip strength and practical value of the reconstructed hand. Therefore, they used 2 donor nerves and accomplished double nerve transfers for stronger finger flexion. In a patient with a C7-T1 brachial plexus injury, they transferred the pronator teres branch to the anterior interosseous nerve and the brachialis motor branch to the flexor digitorum superficialis branch for reinnervation of full finger flexors...
November 18, 2016: Journal of Neurosurgery
https://www.readbyqxmd.com/read/27854092/nitrous-oxide-induced-subacute-combined-degeneration-presenting-with-dystonia-and-pseudoathetosis-a-case-report
#15
Hung-Ju Chen, Chih-Shan Huang
PURPOSE: Nitrous oxide (N2O) is neurotoxic by interfering with vitamin B12 bioavailability. The clinical picture is indistinguishable to that of subacute combined degeneration (SCD). A movement disorder might occur though it is not a characteristic feature. We report a patient with N2O-induced SCD, exhibiting a combination of different involuntary movements. CASE REPORT: A 20-year-old woman presented with one month of progressive unsteady gait, involuntary movements and tingling sensation in a stocking-glove distribution...
June 15, 2016: Acta Neurologica Taiwanica
https://www.readbyqxmd.com/read/27848072/hamate-hook-nonunion-initially-mistaken-for-ulnar-nerve-compression-a%C3%A2-case-report-with-review-of-literature
#16
Mario Josipovic, Dorotea Bozic, Ivan Bohacek, Tomislav Smoljanovic, Ivan Bojanic
BACKGROUND: Hamate hook (HH) stress fractures are rare, often presenting with misleading symptoms and easily overlooked/misdiagnosed. These fractures occur frequently in individuals participating in sports activities involving racquets, bats, or clubs. Symptoms are non-specific and often mimic other clinical conditions, such as ulnar nerve entrapment or ulnar vessel thrombosis. CASE REPORT: A 17-year-old tennis player with no history of trauma presented with dominant hand weakness together with pain and paresthesia on the ulnar side, which exacerbated with tennis play...
November 15, 2016: Wiener Klinische Wochenschrift
https://www.readbyqxmd.com/read/27830943/long-term-functional-outcome-of-trigger-finger
#17
Danit Langer, Shai Luria, Michael Michailevich, Adina Maeir
PURPOSE: The purpose of this study was to explore the long-term functional outcomes of trigger finger (TF) as perceived by the patient. METHODS: Three study groups were included in the study: prolonged follow up TF group (at least 1-year post-treatment) (PF-TF), patients with acute TF and a control group. The first group was recruited retrospectively and included all patients who were diagnosed with TF in one orthopedic clinic and were contacted by phone, 109 agreed to participate...
November 10, 2016: Disability and Rehabilitation
https://www.readbyqxmd.com/read/27807773/drop-finger-caused-by-8th-cervical-nerve-root-impairment-a-clinical-case-series
#18
Masao Koda, Takeo Furuya, Tomoyuki Rokkaku, Masazumi Murakami, Yasushi Ijima, Junya Saito, Mitsuhiro Kitamura, Seiji Ohtori, Sumihisa Orita, Kazuhide Inage, Masashi Yamazaki, Chikato Mannoji
PURPOSE: Recently, it has been reported that impairment by an 8th cervical nerve root lesion can cause drop finger, namely C8 drop finger. Here, we report a clinical case series of C8 drop finger to reveal the clinical outcome of surgical treatments to allow for a better choice of treatment. METHODS: The present study included 17 consecutive patients who were diagnosed as having C8 drop finger, in which muscle strength of the extensor digitorum communis (EDC) showed a manual muscle testing (MMT) grade of 3 or less...
November 2, 2016: European Spine Journal
https://www.readbyqxmd.com/read/27790781/effect-of-interstimulus-interval-on-cortical-proprioceptive-responses-to-passive-finger-movements
#19
Eero Smeds, Harri Piitulainen, Mathieu Bourguignon, Veikko Jousmäki, Riitta Hari
Shortening of the interstimulus interval (ISI) generally leads to attenuation of cortical sensory responses. For proprioception, however, this ISI effect is still poorly known. Our aim was to characterize the ISI dependence of movement-evoked proprioceptive cortical responses and to find the optimum ISI for proprioceptive stimulation. We measured, from 15 healthy adults, magnetoencephalographic responses to passive flexion and extension movements of the right index finger. The movements were generated by a movement actuator at fixed ISIs of 0...
October 28, 2016: European Journal of Neuroscience
https://www.readbyqxmd.com/read/27783110/-arthrodesis-of-the-proximal-interphalangeal-joint-of-fingers-with-tension-band-wire
#20
B Hohendorff, J Franke, C K Spies, L P Müller, C Ries
OBJECTIVE: Arthrodesis of the proximal interphalangeal joint of fingers in a functional and pain-free position. INDICATIONS: Primary and secondary osteoarthritis, traumatic joint destruction, posttraumatic malposition, instability, joint destruction due to infection, irreparable extensor and/or flexor tendon lesion, recurrent flexion deformity in Dupuytren's disease, arthritis (e. g., rheumatoid arthritis, psoriatic arthritis), failed resection arthroplasty, failed prosthesis, congenital disorder (e...
October 25, 2016: Operative Orthopädie und Traumatologie
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