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https://www.readbyqxmd.com/read/28222547/brain-plasticity-after-implanted-peroneal-nerve-electrical-stimulation-to-improve-gait-in-chronic-stroke-patients-two-case-reports
#1
Aurore Thibaut, Florent Moissenet, Carol Di Perri, Céline Schreiber, Angélique Remacle, Elisabeth Kolanowski, Frédéric Chantraine, Claire Bernard, Roland Hustinx, Jean-Flory Tshibanda, Paul Filipetti, Steven Laureys, Olivia Gosseries
BACKGROUND: Recent studies have shown that stimulation of the peroneal nerve using an implantable 4-channel peroneal nerve stimulator could improve gait in stroke patients. OBJECTIVES: To assess structural cortical and regional cerebral metabolism changes associated with an implanted peroneal nerve electrical stimulator to correct foot drop related to a central nervous system lesion. METHODS: Two stroke patients presenting a foot drop related to a central nervous system lesion were implanted with an implanted peroneal nerve electrical stimulator...
February 6, 2017: NeuroRehabilitation
https://www.readbyqxmd.com/read/28220401/numerical-model-for-healthy-and-injured-ankle-ligaments
#2
Antonella Forestiero, Emanuele Luigi Carniel, Chiara Giulia Fontanella, Arturo Nicola Natali
The aim of this work is to provide a computational tool for the investigation of ankle mechanics under different loading conditions. The attention is focused on the biomechanical role of ankle ligaments that are fundamental for joints stability. A finite element model of the human foot is developed starting from Computed Tomography and Magnetic Resonance Imaging, using particular attention to the definition of ankle ligaments. A refined fiber-reinforced visco-hyperelastic constitutive model is assumed to characterize the mechanical response of ligaments...
February 20, 2017: Australasian Physical & Engineering Sciences in Medicine
https://www.readbyqxmd.com/read/28214465/acute-and-chronic-lateral-ankle-instability-diagnosis-management-and-new-concepts
#3
Rachel Shakked, Steven Sheskier
Lateral ankle instability is a common entity that can result in degenerative arthritis if left untreated. Acute ligament injuries should primarily be treated nonoperatively with a course of physical therapy and functional bracing. Chronic ankle instability is defined as mechanical or functional and can be diagnosed using a combination of history, physical examination, stress radiographs, and magnetic resonance imaging. After failure of nonoperative treatment, surgical treatment with anatomic ligament repair and inferior extensor retinaculum augmentation has the best clinical outcomes...
January 2017: Bulletin of the Hospital for Joint Diseases
https://www.readbyqxmd.com/read/28207840/using-the-hephaistos-orthotic-device-to-study-countermeasure-effectiveness-of-neuromuscular-electrical-stimulation-and-dietary-lupin-protein-supplementation-a-randomised-controlled-trial
#4
Jochen Zange, Kathrin Schopen, Kirsten Albracht, Darius A Gerlach, Petra Frings-Meuthen, Nicola A Maffiuletti, Wilhelm Bloch, Jörn Rittweger
PURPOSE: The present study investigated whether neuromuscular electrical stimulation for 20 min twice a day with an electrode placed over the soleus muscle and nutritional supplementation with 19 g of protein rich lupin seeds can reduce the loss in volume and strength of the human calf musculature during long term unloading by wearing an orthotic unloading device. METHODS: Thirteen healthy male subjects (age of 26.4 ± 3.7 years) wore a Hephaistos orthosis one leg for 60 days during all habitual activities...
2017: PloS One
https://www.readbyqxmd.com/read/28166147/acrometastasis-of-neuroblastoma-to-the-great-toe-revealed-by-mibg-scan
#5
Kun Zheng, Hongming Zhuang
A 3-year-old boy with history of neuroblastoma underwent I-MIBG scan. The whole-body images showed relatively normal tracer distribution except for mild activity in the right foot, which was located in the first metatarsal on SPECT/CT images. The subsequent MRI scan of the right foot showed infiltration of the metatarsal of the right first toe. The findings were consistent with solitary acrometastasis of neuroblastoma to the great toe.
February 3, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28159047/localized-pigmented-villonodular-synovitis-of-the-ankle-expect-the-unexpected
#6
Ozren Kubat, Ivan Bojanić, Tomislav Smoljanović
BACKGROUND: We present the technique, results and discuss arthroscopic treatment of the localized form of pigmented villonodular synovitis (LPVNS) of the ankle. METHODS: Medical records of five patients diagnosed and treated for ankle LPVNS with a minimum five-year followup were retrospectively reviewed. All patients were treated arthroscopically, altered synovial tissue was resected and a sample of tissue was sent for pathohistological examination for the definitive diagnosis...
March 2017: Foot and Ankle Surgery: Official Journal of the European Society of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/28142138/three-dimensional-imaging-based-web-application-for-predicting-tracheal-tube-depth-in-preterm-neonates
#7
Raksa Tupprasoot, Dean Langan, J Ciaran Hutchinson, Hannah Barrett, Michael R J Sury, Owen J Arthurs
BACKGROUND: Positioning a tracheal tube (TT) to the correct depth in preterm infants is challenging. Currently, there is no reliable single-predictor model for neonates applicable to the whole range of size or age. OBJECTIVE: In this study, we used post-mortem magnetic resonance imaging (PMMRI) of preterm infants to measure tracheal dimensions and to develop a clinical guide for TT positioning. METHODS: We measured tracheal length (TL) and tracheal diameter (TD) in a cohort of normal neonates and foetuses that underwent PMMRI (cause of death unexplained)...
February 1, 2017: Neonatology
https://www.readbyqxmd.com/read/28123969/real-time-magnetic-resonance-imaging-of-deep-venous-flow-during-muscular-exercise-preliminary-experience
#8
Arun Antony Joseph, Klaus-Dietmar Merboldt, Dirk Voit, Johannes Dahm, Jens Frahm
BACKGROUND: The accurate assessment of peripheral venous flow is important for the early diagnosis and treatment of disorders such as deep-vein thrombosis (DVT) which is a major cause of post-thrombotic syndrome or even death due to pulmonary embolism. The aim of this work is to quantitatively determine blood flow in deep veins during rest and muscular exercise using a novel real-time magnetic resonance imaging (MRI) method for velocity-encoded phase-contrast (PC) MRI at high spatiotemporal resolution...
December 2016: Cardiovascular Diagnosis and Therapy
https://www.readbyqxmd.com/read/28120032/-tendinopathies-of-the-foot-and-ankle-evidence-for-the-origin-diagnostics-and-therapy
#9
Ralph Gaulke, Christian Krettek
Tendinopathies of the foot and ankle result in substantial impairment of the mobility of patients and have a high clinical significance. Knowledge of the origin of these diseases has been accumulated over decades from the multitude of intrinsic and extrinsic triggering factors based on biomechanical considerations with an evidence-based medicine (EBM) level 5. A high correlation between tendinopathy and hypervascularization of the Achilles tendon was found in a double-blind randomized prospective study using Doppler ultrasound (EBM level 1) but these results were not reproducible; therefore, the importance of these findings is unclear...
January 24, 2017: Der Unfallchirurg
https://www.readbyqxmd.com/read/28109309/role-of-magnetic-resonance-imaging-versus-ultrasound-for-detection-of-plantar-plate-tear
#10
REVIEW
Xin Duan, Lang Li, Dai-Qing Wei, Ming Liu, Xi Yu, Zhao Xu, Ye Long, Zhou Xiang
BACKGROUND: Plantar plate tears could be the reason of forefoot pain, affecting foot function. Magnetic resonance imaging (MRI) and ultrasound (US) were commonly used for the diagnosis of plantar plate tears. The decision of whether to use MRI or US carried some controversy. Our study aimed to find out the diagnostic accuracy of MRI versus US for plantar plate tears. METHODS: The database of the Cochrane Central Register of Controlled Trials (CENTRAL), PubMed, EMBASE, and relative orthopedic meetings until May 2016 were searched...
January 21, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28106318/reduced-laser-evoked-potential-habituation-detects-abnormal-central-pain-processing-in-painful-radiculopathy-patients
#11
P Hüllemann, C von der Brelie, G Manthey, J Düsterhöft, A K Helmers, M Synowitz, R Baron
BACKGROUND: Repetitive painful laser stimuli lead to physiological laser-evoked potential (LEP) habituation, measurable by a decrement of the N2/P2 amplitude. The time course of LEP-habituation is reduced in the capsaicin model for peripheral and central sensitization and in patients with migraine and fibromyalgia. In the present investigation, we aimed to assess the time course of LEP-habituation in a neuropathic pain syndrome, i.e. painful radiculopathy. METHODS: At the side of radiating pain, four blocks of 25 painful laser stimuli each were applied to the ventral thigh at the L3 dermatome in 27 patients with painful radiculopathy...
January 20, 2017: European Journal of Pain: EJP
https://www.readbyqxmd.com/read/28100198/mr-imaging-for-detection-of-trampoline-injuries-in-children
#12
E Hauth, H Jaeger, P Luckey, M Beer
BACKGROUND: The recreational use of trampolines is an increasingly popular activity among children and adolescents. Several studies reported about radiological findings in trampoline related injuries in children. The following publication presents our experience with MRI for detection of trampoline injuries in children. METHODS: 20 children (mean 9.2 years, range: 4-15 years) who had undergone an MRI study for detection of suspected trampoline injuries within one year were included...
January 18, 2017: BMC Pediatrics
https://www.readbyqxmd.com/read/28076977/combining-microfractures-autologous-bone-graft-and-autologous-matrix-induced-chondrogenesis-for-the-treatment-of-juvenile-osteochondral-talar-lesions
#13
Riccardo D'Ambrosi, Camilla Maccario, Chiara Ursino, Nicola Serra, Federico Giuseppe Usuelli
BACKGROUND: The purpose of this study was to evaluate the clinical and radiologic outcomes of patients younger than 20 years, treated with the arthroscopic-talus autologous matrix-induced chondrogenesis (AT-AMIC) technique and autologous bone graft for osteochondral lesion of the talus (OLT). METHODS: Eleven patients under 20 years (range 13.3-20.0) underwent the AT-AMIC procedure and autologous bone graft for OLTs. Patients were evaluated preoperatively (T0) and at 6 (T1), 12 (T2), and 24 (T3) months postoperatively, using the American Orthopaedic Foot & Ankle Society Ankle and Hindfoot (AOFAS) score, the visual analog scale and the SF-12 respectively in its Mental and Physical Component Scores...
January 1, 2017: Foot & Ankle International
https://www.readbyqxmd.com/read/28070456/a-simple-rat-model-of-mild-traumatic-brain-injury-a-device-to-reproduce-anatomical-and-neurological-changes-of-mild-traumatic-brain-injury
#14
Ho Jeong Kim, Soo Jeong Han
Mild traumatic brain injury typically involves temporary impairment of neurological function. Previous studies used water pressure or rotational injury for designing the device to make a rat a mild traumatic brain injury model. The objective of this study was to make a simple model of causing mild traumatic brain injury in rats. The device consisted of a free-fall impactor that was targeted onto the rat skull. The weight (175 g) was freely dropped 30 cm to rat's skull bregma. We installed a safety device made of acrylic panel...
2017: PeerJ
https://www.readbyqxmd.com/read/28062970/good-prognosis-of-postpartum-lower-limb-sensorimotor-deficit-a-combined-clinical-electrophysiological-and-radiological-follow-up
#15
A Richard, G Vellieux, S Abbou, J L Benifla, P Lozeron, N Kubis
Postpartum lower limb motor and/or sensory deficit is an uncommon obstetrical complication. We aimed to identify its incidence, etiology, and precipitating factors, as well as the neurological prognosis by retrospectively analyzing the successive neurological evaluations, electrophysiological, and MRI data from all the consecutive patients with postpartum motor and/or sensory deficits of the lower limbs referred from the Lariboisière Obstetrical Department to the Lariboisière Neurophysiology Department, from January 2012 to June 2016, as well as data concerning labor and morphological characteristics of mother and baby...
January 6, 2017: Journal of Neurology
https://www.readbyqxmd.com/read/28061547/comparison-of-magnetic-resonance-imaging-and-stress-radiographs-in-the-evaluation-of-chronic-lateral-ankle-instability
#16
Scott Jolman, Justin Robbins, Laura Lewis, Melissa Wilkes, Paul Ryan
BACKGROUND: In patients who develop chronic ankle instability, clinicians often obtain magnetic resonance imaging (MRI) as part of the evaluation prior to operative referral. The purpose of this study was to analyze the diagnostic efficacy of MRI in the diagnosis of chronic lateral ankle instability. Our hypothesis was that magnetic resonance imaging would not be a specific diagnostic tool in the evaluation of chronic lateral ankle instability. MATERIALS AND METHODS: A retrospective chart review of 187 consecutive patients (190 ankles) was performed...
January 1, 2017: Foot & Ankle International
https://www.readbyqxmd.com/read/28050345/functional-mri-vs-navigated-tms-to-optimize-m1-seed-volume-delineation-for-dti-tractography-a-prospective-study-in-patients-with-brain-tumours-adjacent-to-the-corticospinal-tract
#17
Carolin Weiss Lucas, Irada Tursunova, Volker Neuschmelting, Charlotte Nettekoven, Ana-Maria Oros-Peusquens, Gabriele Stoffels, Andrea Maria Faymonville, Shah N Jon, Karl Josef Langen, Hannah Lockau, Roland Goldbrunner, Christian Grefkes
BACKGROUND: DTI-based tractography is an increasingly important tool for planning brain surgery in patients suffering from brain tumours. However, there is an ongoing debate which tracking approaches yield the most valid results. Especially the use of functional localizer data such as navigated transcranial magnetic stimulation (nTMS) or functional magnetic resonance imaging (fMRI) seem to improve fibre tracking data in conditions where anatomical landmarks are less informative due to tumour-induced distortions of the gyral anatomy...
2017: NeuroImage: Clinical
https://www.readbyqxmd.com/read/28033048/delayed-surgical-reconstruction-of-a-peroneal-tendon-rupture-in-an-accessory-os-peroneuma-rare-differential-diagnosis-in-chronic-ankle-pain
#18
Julia Evers, Dirk Wähnert, Niklas Grüneweller, Michael J Raschke, Sabine Ochman
A fracture of the os peroneum is a rare cause of ankle and foot pain and is often overlooked and not assumed. Only a few case reports have discussed the different etiologies, options for diagnosis, and therapeutic interventions for acute cases. We present a case of delayed diagnosis of an os peroneum fracture due to a distortion of the ankle that occurred during air sports. Initial diagnostic testing with magnetic resonance imaging demonstrated a rupture of the peroneus longus tendon with no pathologic abnormalities at the peroneus brevis tendon...
November 2016: Journal of the American Podiatric Medical Association
https://www.readbyqxmd.com/read/28018075/intraosseous-leiomyoma-of-the-calcaneum-an-unusual-bone-tumor-of-foot-and-review-of-literature
#19
Abhijeet Ashok Salunke, Pathik Chandrakant Vala, Harpreet Singh, Rohan Parwani, Sanjay Gandhi, Diva Shah
Leiomyoma is a benign tumor of smooth muscle origin and commonly diagnosed in the uterus, gastrointestinal tract, skin, and mucous membranes. To the best of our knowledge, the only reported intraosseous leiomyomas in extremities occurred in the proximal aspect and distal aspect of the femur, in the tibia, and in the ulna. We are not aware of any previous reports of intraosseous leiomyomas in the foot. The radiograph of the intraosseous leiomyoma shows unilocular or multilocular lytic lesion with sclerotic rim...
October 2016: Journal of Clinical Orthopaedics and Trauma
https://www.readbyqxmd.com/read/28003562/a-novel-diffusion-tensor-mri-approach-for-skeletal-muscle-fascicle-length-measurements
#20
Jos Oudeman, Valentina Mazzoli, Marco A Marra, Klaas Nicolay, Mario Maas, Nico Verdonschot, Andre M Sprengers, Aart J Nederveen, Gustav J Strijkers, Martijn Froeling
Musculoskeletal (dys-)function relies for a large part on muscle architecture which can be obtained using Diffusion-Tensor MRI (DT-MRI) and fiber tractography. However, reconstructed tracts often continue along the tendon or aponeurosis when using conventional methods, thus overestimating fascicle lengths. In this study, we propose a new method for semiautomatic segmentation of tendinous tissue using tract density (TD). We investigated the feasibility and repeatability of this method to quantify the mean fascicle length per muscle...
December 2016: Physiological Reports
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