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https://www.readbyqxmd.com/read/28332407/unsteady-computational-fluid-dynamics-in-front-crawl-swimming
#1
Mathias Samson, Anthony Bernard, Tony Monnet, Patrick Lacouture, Laurent David
The development of codes and power calculations currently allows the simulation of increasingly complex flows, especially in the turbulent regime. Swimming research should benefit from these technological advances to try to better understand the dynamic mechanisms involved in swimming. An unsteady Computational Fluid Dynamics (CFD) study is conducted in crawl, in order to analyse the propulsive forces generated by the hand and forearm. The k-ω SST turbulence model and an overset grid method have been used...
March 23, 2017: Computer Methods in Biomechanics and Biomedical Engineering
https://www.readbyqxmd.com/read/28332159/electromagnetically-tracked-personalized-templates-for-surgical-navigation
#2
Andrew W L Dickinson, Michelle L Zec, David R Pichora, Brian J Rasquinha, Randy E Ellis
PURPOSE: An electromagnetic (EM) surgical tracking system was developed for orthopedic navigation. The reportedly poor accuracy of point-based EM navigation was improved by using anatomical impressions, which were EM-tracked personalized templates. Lines, rather than points, were consistently used for calibration and error evaluation. METHODS: Technical accuracy was tested using models derived from CT scans of ten cadaver shoulders. Tracked impressions were first designed, calibrated, and tested using lines as fiducial objects...
March 22, 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/28329480/linear-atrophy-and-vascular-fragility-following-ultrasoundguided-triamcinolone-injection-for-dequervain-tendonitis
#3
Hal B Willardson, Shannon Buck, James Neiner
A 64 year-old woman presented with a one-yearhistory of purpuric, atrophic, linear patches alongthe left lateral forearm. The patient had receivedtwo ultrasound-guided triamcinolone injectionsone year earlier into her left extensor pollicis brevisand abductor pollicis longus tendon sheathsfor DeQuervain tendonitis. In the seven monthsfollowing the second injection, the patient developedatrophy, purpura, and telangiectasias starting at thesite of injection and extending proximally, followingthe course of her left cephalic vein...
January 15, 2017: Dermatology Online Journal
https://www.readbyqxmd.com/read/28328714/somatic-profile-of-the-elite-boulderers-in-poland
#4
Mariusz Ozimek, Marcin Krawczyk, Emilian Zadarko, Zbigniew Barabasz, Tadeusz Ambroży, Arkadiusz Stanula, Dawid K Mucha, Adam Jurczak, Dariusz Mucha
Ozimek, M, Krawczyk, M, Zadarko, E, Barabasz, Z, Ambroży, T, Stanula, A, Mucha, DK, Jurczak, A, and Mucha, D. Somatic profile of the elite boulderers in Poland. J Strength Cond Res 31(4): 963-970, 2017-The study was designed to determine the values of selected somatic characteristics, body proportions, and the somatotype of elite bouldering climbers in Poland and to establish the relationships between the values of the somatic characteristics and climber's performance in bouldering. The study was conducted in a group of elite sport climbers (n = 10) who were ranked by the Polish Mountaineering Association in 2011, 2012, and 2013...
April 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28328600/management-of-pharyngocutaneous-fistula-with-negative-pressure-wound-therapy
#5
Sérgio Teixeira, Joana Costa, Isabel Bartosch, Bernardo Correia, Álvaro Silva
BACKGROUND: Pharyngocutaneous fistula is a common complication of laryngopharyngeal surgery and is associated with increased morbidity and mortality. Beyond the classical management, negative-pressure wound therapy (NPWT) can be an alternative and effective treatment. CLINICAL REPORT: Two patients with pT3N0M0 squamous cell carcinoma of pyriform sinus were subjected to total laryngectomy and pharyngoesophageal reconstruction of a circular (patient 1) and an anterior wall defect (patient 2) with radial forearm free flap and pectoralis major muscle flap, respectively...
March 21, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28326705/-rotation-and-advancement-of-the-radial-based-fasciocutaneous-flap-for-primary-closure-of-the-radial-forearm-flap-donor-defect
#6
Gao Zhengyang, Jiang Canhua, Chen Jie, Wu Limeng, Ren Hui, Long Fuqiang, He Chunrui, Jian Xinchun
OBJECTIVE: This study aims to investigate the feasibility and clinical application value of a new method for primary donor-site closure of radial forearm flaps with the use of rotation and advancement of radial-based fasciocutaneous flaps. METHODS: The forearm donor-site defects of 36 patients were primarily closed by rotation and advancement of radial-based fasciocutaneous flaps after radial flap harvest from November 2014 to May 2015. Patients included 28 males and 8 females aged 28 to 67 years (53...
October 1, 2016: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/28326030/expansion-of-perceptual-body-maps-near-but-not-across-the-wrist
#7
Matthew R Longo
Perceiving the external spatial location of touch requires that tactile information about the stimulus location on the skin be integrated with proprioceptive information about the location of the body in external space, a process called tactile spatial remapping. Recent results have suggested that this process relies on a distorted representation of the hand. Here, I investigated whether similar distortions are also found on the forearm and how they are affected by the presence of the wrist joint, which forms a categorical, segmental boundary between the hand and the arm...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28325791/individual-variations-in-nitric-oxide-synthase-dependent-sweating-in-young-and-older-males-during-exercise-in-the-heat-role-of-aerobic-power
#8
Tatsuro Amano, Naoto Fujii, Jeffrey C Louie, Robert D Meade, Glen P Kenny
We evaluated the association between aerobic power (defined by peak oxygen consumption; VO2peak) and the contribution of nitric oxide synthase (NOS) to the sweating response in young and older individuals during exercise in the heat. Data from 44 young (24 ± 1 years) and 48 older (61 ± 2 years) males with mean VO2peak of 47.8 ± 2.4 (range, 28.0-62.3) and 39.1 ± 2.3 (range, 26.4-55.7) mLO2 kg(-1) min(-1), respectively, were compiled from our prior studies. Participants performed two 15- to 30-min bouts of exercise at a fixed rate of metabolic heat production of 400 or 500 W, each separated by 15-20 min recovery in the heat (35°C, relative humidity of 20%)...
March 2017: Physiological Reports
https://www.readbyqxmd.com/read/28325565/impact-of-the-method-and-success-of-pharyngeal-reconstruction-on-the-outcome-of-treating-laryngeal-and-hypopharyngeal-cancers-with-pharyngolaryngectomy-a-national-analysis
#9
S A R Nouraei, A Dias, H Kanona, D Vokes, P O'Flynn, P M Clarke, S E Middleton, A Darzi, P Aylin, N Jallali
BACKGROUND: Surgical treatment of cancers that arise from or invade the hypopharynx presents major reconstructive challenges. Reconstructive failure exposes the airway and neck vessels to digestive contents. METHODS: We performed a national N = near-all analysis of the administrative dataset to identify pharyngolaryngectomies in England between 2002 and 2012. Information about morbidity, pharyngeal closure method and post-operative complications was derived. RESULTS: There were 1589 predominantly male (78%) patients whose mean age at surgery was 62 years...
January 9, 2017: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/28325404/a-man-with-firm-induration-of-the-right-forearm
#10
So Min Kim, Sang Hyun Cho, Jeong Deuk Lee, Hei Sung Kim
No abstract text is available yet for this article.
April 2017: Journal of the American Academy of Dermatology
https://www.readbyqxmd.com/read/28325034/modulation-of-motor-cortex-excitability-by-peripheral-magnetic-stimulation-of-different-stimulus-sites-and-frequencies
#11
A Sato, X Liu, T Torii, M Iwahashi, K Iramina
Peripheral stimulation is known to influence the state of cortical excitability. The purpose of this study is to investigate whether peripheral magnetic stimulation has similar effects on cortical excitability to transcranial magnetic stimulation (TMS). A magnetic stimulator with a flat figure-of-eight coil was used for both TMS, and peripheral magnetic stimulation applied to the bilateral forearms. TMS was performed on the left primary motor cortex to evaluate influence of the peripheral magnetic stimulation, and motor evoked potential (MEP) was measured from the right first dorsal interosseous...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324931/muscle-activity-distribution-features-extracted-from-hd-semg-to-perform-forearm-pattern-recognition
#12
F Nougarou, A Campeau-Lecours, D Massicotte, B Gosselin
An efficient pattern recognition system based exclusively on forearm surface Electromyographic (sEMG) signals is proposed to provide a more intuitive control of a robotic arm used by some of the disabled. The main contribution of this paper is the use of an original set of features characterizing the muscle activity distribution obtained with high-density sEMG (HD sEMG) sensors. Contrary to simple sEMG, HD sEMG can produce muscle activity images with spatial distributions that differ according to forearm movement...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28322117/effect-of-overlapping-operations-on-outcomes-in-microvascular-reconstructions-of-the-head-and-neck
#13
Larissa Sweeny, Eben L Rosenthal, Tyler Light, Jessica Grayson, Daniel Petrisor, Scott H Troob, Benjamin J Greene, William R Carroll, Mark K Wax
Objective To compare outcomes after microvascular reconstructions of head and neck defects between overlapping and nonoverlapping operations. Study Design Retrospective cohort study. Setting Tertiary care center. Subjects and Methods Patients undergoing microvascular free tissue transfer operations between January 2010 and February 2015 at 2 tertiary care institutions were included (n = 1315). Patients were divided into 2 cohorts by whether the senior authors performed a single or consecutive microvascular reconstruction (nonoverlapping; n = 773, 59%) vs performing overlapping microvascular reconstructions (overlapping; n = 542, 41%)...
March 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28321638/wearing-graduated-compression-stockings-augments-cutaneous-vasodilation-in-heat-stressed-resting-humans
#14
Naoto Fujii, Toshiya Nikawa, Bun Tsuji, Narihiko Kondo, Glen P Kenny, Takeshi Nishiyasu
PURPOSE: We investigated whether graduated compression induced by stockings enhances cutaneous vasodilation in passively heated resting humans. METHODS: Nine habitually active young men were heated at rest using water-perfusable suits, resulting in a 1.0 °C increase in body core temperature. Heating was repeated twice on separate occasions while wearing either (1) stockings that cause graduated compression (pressures of 26.4 ± 5.3, 17.5 ± 4.4, and 6...
March 20, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28320447/subclinical-dermal-involvement-is-detectable-by-high-frequency-ultrasound-even-in-patients-with-limited-cutaneous-systemic-sclerosis
#15
A Sulli, B Ruaro, V Smith, S Paolino, C Pizzorni, G Pesce, M Cutolo
BACKGROUND: The aim of the study was to detect by skin high-frequency ultrasound (US) possible subclinical skin involvement in patients affected by limited cutaneous systemic sclerosis (lcSSc), in those skin areas apparently not affected by the disease on the basis of a normal modified Rodnan skin score (mRSS). Differences in dermal thickness (DT) in comparison with healthy subjects were investigated. METHODS: Fifty patients with lcSSc (age 62 ± 13 years (mean ± SD), disease duration 5 ± 5 years) and 50 sex-matched and age-matched healthy subjects (age 62 ± 11 years) were enrolled...
March 20, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28319623/expanding-pruritic-plaque-on-the-forearm
#16
Sara E Chapman, Marie J Han, Jennifer Alfar
No abstract text is available yet for this article.
February 2017: Cutis; Cutaneous Medicine for the Practitioner
https://www.readbyqxmd.com/read/28317552/adaptation-to-suspensory-locomotion-in-australopithecus-sediba
#17
Thomas R Rein, Terry Harrison, Kristian J Carlson, Katerina Harvati
Australopithecus sediba is represented by well-preserved fossilized remains from the locality of Malapa, South Africa. Recent work has shown that the combination of features in the limb skeleton of A. sediba was distinct from that of earlier species of Australopithecus, perhaps indicating that this species moved differently. The bones of the arm and forearm indicate that A. sediba was adapted to suspensory and climbing behaviors. We used a geometric morphometric approach to examine ulnar shape, potentially identifying adaptations to forelimb suspensory locomotion in A...
March 2017: Journal of Human Evolution
https://www.readbyqxmd.com/read/28315817/a-figure-eight-suture-loop-with-kirschner-wires-for-fixation-of-anteromedial-coronoid-process-fractures-a-case-series
#18
Longxiang Shen, Xingang Yu, Biao Zhong, Jian Ding
PURPOSE: Sufficient fixation of an anterior or anteromedial facet fracture of the coronoid process in fracture-dislocation of elbow is important to maintain joint stability. The purpose of this study was to report our experience with 11 patients who were managed with an original fixation technique using a "figure-eight" suture loop. METHODS: From February 2010 to March 2011, 11 cases with a fracture of the anterior or anteromedial facet of the coronoid process were treated by coronoid fixation using a figure-eight suture loop...
February 21, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28314473/complex-regional-pain-syndrome-in-burn-pathological-scarring-a-case-report-and-review-of-the-literature
#19
Suman Mewa Kinoo, Bhugwan Singh
Chronic pain in burn pathological scarring is not an uncommon occurrence. The mechanisms of pain are not clearly understood and hence the management approach is often a daunting task. However, meticulous physical examination of these patients may classify them as complex regional pain syndrome, type I. We present a patient with classic signs and symptoms of complex regional pain syndrome associated with burn pathological scarring of her left forearm that had a favourable response to a thoracoscopic sympathectomy...
March 14, 2017: Burns: Journal of the International Society for Burn Injuries
https://www.readbyqxmd.com/read/28306692/carpal-tunnel-syndrome-grading-using-high-resolution-ultrasonography
#20
Hala R El Habashy, Reem A El Hadidy, Sandra M Ahmed, Basma B El Sayed, Aya S Ahmed
PURPOSE: Carpal tunnel syndrome (CTS) is a common entrapment neuropathy of the wrist. The diagnosis of CTS has been a concern for physicians for a long time. The aim of this study is to evaluate the use of the median nerve (MN) cross-sectional area (CSA) in the wrist compared with the CSA in the forearm to grade the severity of CTS in Egyptian patients. METHODS: The CSAs of the MN in the wrist and forearm were measured in 72 wrists that were diagnosed with CTS via nerve conduction studies and 80 healthy wrists...
March 16, 2017: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
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