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https://www.readbyqxmd.com/read/28226857/development-of-a-closed-loop-system-for-tremor-suppression-in-patients-with-parkinson-s-disease
#1
F L Xu, M Z Hao, S Q Xu, Z X Hu, Q Xiao, N Lan, F L Xu, M Z Hao, S Q Xu, Z X Hu, Q Xiao, N Lan, S Q Xu, Z X Hu, Q Xiao, M Z Hao, N Lan, F L Xu
More than 70% of patients suffering Parkinson's disease (PD) exhibit resting tremor in their extremities, hampering their ability to perform daily activities. Based on our earlier studies on corticospinal transmission of tremor signals [10,11], we hypothesize that cutaneous afferents evoked by surface stimulation can produce an inhibitory effect on propriospinal neurons (PN), which in turn will suppress tremor signals passing through the PN. This paper presents the development of a closed-loop system for tremor suppression by transcutaneous electrical nerve stimulation (TENS) of sensory fibers beneath the skin...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226350/-value-of-endoscopy-application-in-the-management-of-complications-after-radical-gastrectomy-for-gastric-cancer
#2
Yiqun Zhang, Pinghong Zhou
Endoscopy plays an important role in the diagnosis and treatment of postoperative complications of gastric cancer. Endoscopic intervention can avoid the second operation and has attracted wide attention. Early gastric anastomotic bleeding after gastrectomy is the most common. With the development of technology, emergency endoscopy and endoscopic hemostasis provide a new treatment approach. According to the specific circumstances, endoscopists can choose metal clamp to stop bleeding, electrocoagulation hemostasis, local injection of epinephrine or sclerotherapy agents, and spraying specific hemostatic agents...
February 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
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
#3
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/28215043/is-the-change-of-percutaneous-oxygen-pressure-available-to-judge-the-effects-of-brachial-plexus-block
#4
Tomoki Nishiyama
BACKGROUND: To know the objective methods of the effects of the brachial plexus block, we studied the changes in percutaneous oxygen pressure (tcPO₂) with the hypothesis that tcPO₂ increases significantly on the blocked arm in comparison with the non-blocked arm, a phenomenon which is connected with vasodilation following the brachial plexus block. METHODS: Fifteen patients scheduled for upper extremity surgery, aged 20 to 70 years, with ASA physical status I or II were included...
February 19, 2017: Anaesthesiology Intensive Therapy
https://www.readbyqxmd.com/read/28205252/sensory-deficits-after-a-radial-nerve-injury
#5
Jayme Augusto Bertelli, Erica Cavalli, Vera Lúcia Mendes Lehn, Marcos Flávio Ghizoni
BACKGROUND: The aim of our study was to objectively test sensibility on the dorsal side of the hand in patients with radial nerve injury, to document deficits and to detect if surgery for sensory reconstruction is needed. METHODS: Nineteen patients of mean age 31 ± 10 years were examined at a mean of 26.4 ± 27.8 months post radial nerve injury. Sensory mechanical thresholds on the dorsal surface of the hand were evaluated using Semmes-Weinstein monofilaments...
February 16, 2017: Microsurgery
https://www.readbyqxmd.com/read/28198531/superficial-brachial-artery-a-possible-cause-for-idiopathic-median-nerve-entrapment-neuropathy
#6
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/28194713/use-of-compressive-osseointegration-endoprostheses-for-massive-bone-loss-from-tumor-and-failed-arthroplasty-a-viable-option-in-the-upper-extremity
#7
Krista A Goulding, Adam Schwartz, Steven J Hattrup, R Lor Randall, Donald Lee, Damian M Rispoli, Daniel M Lerman, Christopher Beauchamp
BACKGROUND: Endoprostheses using principles of compressive osseointegration have shown good survivorship in several studies involving the lower extremity; however, no series to our knowledge have documented the use of this technology in the management of massive bone loss in the upper limb. QUESTIONS/PURPOSES: (1) What proportion of upper extremity implants using compressive osseointegration fixation principles achieved durable short-term fixation, and what were the modes of failure? (2) What surgical complications resulted from reconstruction using this technique? METHODS: A multiinstitutional retrospective review identified nine patients (five women; four men) who underwent 13 endoprosthetic replacements between 2003 and 2014 using compressive osseointegration (Compliant(®) Pre-stress Device [CPS]; Biomet Inc, Warsaw, IN, USA) in the upper extremity, including two proximal humeri, two humeral diaphyses, seven distal humeri, and two proximal ulna...
February 13, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28167875/locking-plate-arthrodesis-compares-favorably-with-lrti-for-thumb-trapeziometacarpal-arthrosis-early-outcomes-from-a-longitudinal-cohort-study
#8
Nikolas H Kazmers, K J Hippensteel, Ryan P Calfee, Lindley B Wall, Martin I Boyer, Charles A Goldfarb, Richard H Gelberman, Daniel A Osei
BACKGROUND: Trapeziometacarpal arthrodesis (TMA) has been complicated by nonunion and hardware failure. QUESTIONS/PURPOSES: We hypothesized that modification of the TMA technique with a locking cage plate construct would afford reliable bony union while producing greater hand function than trapeziectomy with ligament reconstruction and tendon interposition (LRTI) at early follow-up. METHODS: We enrolled 36 consecutive patients with trapeziometacapal osteoarthritis (14 TMA patients (15 thumbs), 22 LRTI patients (22 thumbs))...
February 2017: HSS Journal: the Musculoskeletal Journal of Hospital for Special Surgery
https://www.readbyqxmd.com/read/28166167/stepwise-percutaneous-leverage-technique-to-avoid-posterior-interosseous-nerve-injury-in-pediatric-radial-neck-fracture
#9
Wan-Sun Choi, Kyeong-Jin Han, Doo-Hyung Lee, Ga-Eun Lee, Heon-Ju Kweon, Jae-Ho Cho
OBJECTIVES: To introduce a stepwise percutaneous leverage technique to avoid posterior interosseous nerve (PIN) injury in pediatric patients with radial neck fractures and to evaluate the clinical outcome and the predisposing factors affecting the outcome. DESIGN: Retrospective case series study. SETTING: University level 1 trauma center. PATIENTS: Thirty-four children with a radial neck fracture, who were treated using a stepwise percutaneous leverage technique, were included in the study...
January 24, 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28164054/a-very-rare-presentation-of-type-1-monteggia-equivalent-fracture-with-ipsilateral-fracture-of-distal-forearm-approach-with-outcome-case-report
#10
Dhananjay Singh, Bhanu Awasthi, Vikas Padha, Sanjay Thakur
INTRODUCTION: We report a case of Type 1 Monteggia equivalent injury with intact radio-capitellar congruity, associated with epiphyseal fracture of distal radius and distal ulna shaft in an 11-year-old boy. There are only a few cases of Monteggia or Monteggia equivalent injury with ipsilateral forearm fractures in children, and injury pattern being reported by us is not only rare but also the only case reported thus far to the best of our knowledge, Sood et al. described Type 1 equivalent with epiphyseal injuries of both radius and ulna Osada et al...
September 2016: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28162904/bilateral-internal-carotid-artery-aneurysms-at-the-subpetrosal-portion-with-unilateral-lower-cranial-nerve-palsies-review-and-consideration-of-surgical-strategy
#11
Kei Noguchi, Takachika Aoki, Rokudai Sakamoto, Kimihiko Orito, Yasuharu Takeuchi, Masaru Hirohata, Motohiro Morioka
BACKGROUND: Symptomatic bilateral extracranial internal carotid artery (ICA) aneurysms at the subpetrosal portion are extremely rare, and their treatment strategy remains unknown. CLINICAL PRESENTATION: A 42-year-old man presented to our hospital with a 2-month history of sudden onset of hoarseness, dysarthria, and dysphagia. Magnetic resonance imaging, magnetic resonance angiography, and computed tomography angiography revealed extracranial bilateral ICA aneurysms at the subpetrosal portion...
February 2, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28162172/-radiographic-and-clinical-assessment-of-supracondylar-humeral-fractures-resulted-from-sports-in-children
#12
Z J Liu, S N Pan, L J Zhang
Objective: To investigate the radiographic and clinical assessment for supracondylar humeral fractures resulted from sports in children. Methods: The medical records of 166 patients with displaced supracondylar humerus fractures treated in Shengjing Hospital of China Medical University from January 2015 to December 2015 were reviewed.The etiology of 56 of 166 cases was relevant to the sports.Medical records of 56 of 166 patients were reviewed, incluidng gender, the mean age of patient at the time of surgery, the mean duration of injury, radiographic assessment based on the anteroposterior (AP) and lateral radiographs of the elbow, neurologic injury, the Mayo Elbow Performance Score (MEPS) and the criteria of Flynn...
January 17, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28159911/nerve-specific-input-modulation-to-spinal-neurons-during-a-motor-task-in-the-monkey
#13
Joachim Confais, Geehee Kim, Saeka Tomatsu, Tomohiko Takei, Kazuhiko Seki
: If not properly regulated, the large amount of reafferent sensory signals generated by our own movement could destabilize the central nervous system. We investigated how input from peripheral nerves to spinal cord is modulated during behavior. We chronically stimulated the deep radial nerve (DR; proprioceptive, wrist extensors), the median nerve (M; mixed, wrist flexors and palmar skin) and the superficial radial nerve (SR; cutaneous, hand dorsum) while four monkeys performed a delayed wrist flexion-extension task...
February 3, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28157792/ultrasound-guided-costoclavicular-brachial-plexus-block-sonoanatomy-technique-and-block-dynamics
#14
Jia Wei Li, Banchobporn Songthamwat, Winnie Samy, Xavier Sala-Blanch, Manoj Kumar Karmakar
BACKGROUND AND OBJECTIVES: This study aimed to describe in detail the relevant sonoanatomy, technique, and block dynamics of an ultrasound-guided costoclavicular brachial plexus block (BPB). METHODS: Thirty patients scheduled for hand or forearm surgery under a BPB underwent transverse ultrasound imaging of the medial infraclavicular fossa to identify the cords of the brachial plexus at the costoclavicular space (CCS). An ultrasound-guided BPB was then performed at the CCS with 20 mL of 0...
March 2017: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/28149207/intraneural-median-nerve-anatomy-and-implications-for-treating-mixed-median-nerve-injury-in-the-hand
#15
Michael J Franco, Dennis C Nguyen, Benjamin Z Phillips, Susan E Mackinnon
Background: Nerve transfers have resulted in increased interest in the microanatomy of peripheral nerves. Herein, we expand our understanding of the internal anatomy of the digital nerve to the ulnar index and long fingers, the radial long and ring fingers, and the nerves to the second and third web spaces. Methods: The median nerve was dissected from the digital nerves to the antecubital fossa in 14 fresh upper extremities. The distance of proximal internal neurolysis of the fascicles to the second and third web space and proper digital nerves was measured relative to the radial styloid...
December 2016: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28149139/can-we-perform-distal-nerve-block-instead-of-brachial-plexus-nerve-block-under-ultrasound-guidance-for-hand-surgery
#16
Ilker Ince, Mehmet Aksoy, Mine Celik
OBJECTIVE: Distal nerve blocks are used in the event of unsuccessful blocks as rescue techniques. The primary purpose of this study was to determine the sufficiency for anesthesia of distal nerve block without the need for deep sedation or general anesthesia. The secondary purpose was to compare block performance times, block onset times, and patient and surgeon satisfaction. MATERIALS AND METHODS: Patients who underwent hand surgery associated with the innervation area of the radial and median nerves were included in the study...
October 2016: Eurasian Journal of Medicine
https://www.readbyqxmd.com/read/28146238/collagen-architecture-of-the-posterior-pole-high-resolution-wide-field-of-view-visualization-and-analysis-using-polarized-light-microscopy
#17
Ning-Jiun Jan, Kira Lathrop, Ian A Sigal
Purpose: The purpose of this study was to leverage polarized light microscopy (PLM) to visualize the collagen fiber architecture of posterior pole and optic nerve head with micrometer-scale resolution and to identify and quantify major organizational components. Methods: Eight sheep posterior poles were cryosectioned and imaged using PLM. Collagen fiber orientation was determined by using custom scripts, and the resulting orientation maps were inspected and quantified to identify major structural elements and tested for differences in mean fiber orientation and anisotropy, using linear mixed effect models...
February 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28137445/lipofibromatous-hamartoma-of-the-radial-nerve-an-unusual-location
#18
G Pomares, B Pedeutour, F Dap, G Dautel
Lipofibromatous hamartoma is a congenital and ineradicable benign tumour of the peripheral nerve sheaths, affecting almost exclusively the median nerve and its branches. It corresponds to an infiltration of the nerve by lipofibramatous tissue that dissociates the fascicles. We report a highly unusual case of a lipofibromatous hamartoma of the radial nerve in the upper extremity in a 52-year-old female patient.
February 2017: Hand Surgery and Rehabilitation
https://www.readbyqxmd.com/read/28120090/radioguided-occult-lesion-localization-in-deep-schwannomas-of-the-peripheral-nerves-results-of-a-preliminary-case-series
#19
Giorgio Stevanato, Giovanni Monteleone, Donatella Sgubin, Michele Sicolo, Giulia Pastorello, Luca Vazzana, Franco Guida
BACKGROUND: The detection of small deep schwannomas of the peripheral nerves has been increasing since the the use of precise neuroimaging techniques has become more widespread; however, although nonpalpable lesions can be well defined by images, it is often difficult to identify them during the surgical procedure. The authors report seven cases of nonpalpable small deep schwannomas surgically treated after their identification using the radioguided occult lesion localization (ROLL) technique...
2017: Acta Neurochirurgica. Supplement
https://www.readbyqxmd.com/read/28117631/intracellular-position-of-centrioles-and-the-direction-of-homeostatic-epithelial-cell-movements-in-the-mouse-cornea
#20
Erika Silverman, Jin Zhao, John C Merriam, Takayuki Nagasaki
Corneal epithelial cells exhibit continuous centripetal movements at a rate of about 30 µm per day, but neither the driving force nor the mechanism that determines the direction of movements is known. To facilitate the investigation of homeostatic cell movement, we examined if the intracellular position of a centriole can be used as a directional marker of epithelial cell movements in the mouse cornea. A direction of cell movements was estimated in fixed specimens from a pattern of underlying subepithelial nerve fibers...
February 2017: Journal of Histochemistry and Cytochemistry: Official Journal of the Histochemistry Society
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