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https://www.readbyqxmd.com/read/29351689/microvascular-decompression-for-patients-with-hemifacial-spasm-associated-with-common-trunk-anomaly-of-the-cerebellar-arteries-case-study-and-review-of-literature
#1
Ehab El Refaee, Christian Rosenstengel, Joerg Baldauf, Dirk T Pillich, Marc Matthes, Henry W S Schroeder
BACKGROUND: Few previous studies have described the origin of both anterior and posterior inferior cerebellar arteries from one vessel as a common trunk anomaly. No previous studies have clearly described the aforementioned anomaly depending on intraoperative endoscopic visualization. OBJECTIVE: To evaluate the association of a common trunk anomaly with hemifacial spasm, which makes microvascular decompression more challenging. METHODS: All patients with common trunk anomaly associated with hemifacial spasm who received surgical treatment between 2006 and 2015 in our institution were identified in our prospectively collected database...
February 1, 2018: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29351686/basilar-artery-ectasia-causing-trigeminal-neuralgia-an-evolved-technique-of-transpositional-suture-pexy
#2
Harminder Singh, Harley Brito da Silva, Mehdi Zeinalizadeh, Turki Elarjani, David Straus, Laligam N Sekhar
BACKGROUND: Microvascular decompression for patients with trigeminal neuralgia (TGN) is widely accepted as one of the modalities of treatment. The standard approach has been retrosigmoid suboccipital craniotomy with placement of a Teflon pledget to cushion the trigeminal nerve from the offending artery, or cauterize and divide the offending vein(s). However, in cases of severe compression caused by a large artery, the standard decompression technique may not be effective. OBJECTIVE: To describe a unique technique of vasculopexy of the ectatic basilar artery to the tentorium in a patient with TGN attributed to a severely ectatic and tortuous basilar artery...
February 1, 2018: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29351600/gtc-how-to-maintain-huge-genotype-collections-in-a-compressed-form
#3
Agnieszka Danek, Sebastian Deorowicz
Motivation: Nowadays, genome sequencing is frequently used in many research centers. In projects, such as the Haplotype Reference Consortium or the Exome Aggregation Consortium, huge databases of genotypes in large populations are determined. Together with the increasing size of these collections, the need for fast and memory frugal ways of representation and searching in them becomes crucial. Results: We present GTC, a novel compressed data structure for representation of huge collections of genetic variation data...
January 16, 2018: Bioinformatics
https://www.readbyqxmd.com/read/29351284/magnetic-resonance-angiography-with-compressed-sensing-an-evaluation-of-moyamoya-disease
#4
Takayuki Yamamoto, Tomohisa Okada, Yasutaka Fushimi, Akira Yamamoto, Koji Fujimoto, Sachi Okuchi, Hikaru Fukutomi, Jun C Takahashi, Takeshi Funaki, Susumu Miyamoto, Aurélien F Stalder, Yutaka Natsuaki, Peter Speier, Kaori Togashi
Compressed sensing (CS) reconstructions of under-sampled measurements generate missing data based on assumptions of image sparsity. Non-contrast time-of-flight MR angiography (TOF-MRA) is a good candidate for CS based acceleration, as MRA images feature bright trees of sparse vessels over a well-suppressed anatomical background signal. A short scan time derived from CS is beneficial for patients of moyamoya disease (MMD) because of the frequency of MR scans. The purpose of this study was to investigate the reliability of TOF-MRA with CS in the evaluation of MMD...
2018: PloS One
https://www.readbyqxmd.com/read/29351135/angiography-and-embolization-in-the-management-of-bleeding-pelvic-fractures
#5
Rahul Vaidya, Jacob Waldron, Alesha Scott, Kerellos Nasr
The use, timing, and priority of angioembolization in the management of bleeding pelvic fractures remain ambiguous. The most common vessels for angioembolization are, in decreasing order, the internal iliac artery and its branches, the superior gluteal artery, the obturator artery, and the internal pudendal artery. Technical success rates for this treatment option range from 74% to 100%. The fracture patterns most commonly requiring angioembolization are the Young and Burgess lateral compression and anterior-posterior compression types and Tile type C...
January 18, 2018: Journal of the American Academy of Orthopaedic Surgeons
https://www.readbyqxmd.com/read/29350922/computing-curvature-sensitivity-of-biomolecules-in-membranes-by-simulated-buckling
#6
Federico Elias-Wolff, Martin Lindén, Alexander P Lyubartsev, Erik G Brandt
Membrane curvature sensing, where the binding free energies of membrane-associated molecules depend on the local membrane curvature, is a key factor to modulate and maintain the shape and organization of cell membranes. However, the microscopic mechanisms are not well understood, partly due to absence of efficient simulation methods. Here, we describe a method to compute the curvature dependence of the binding free energy of a membrane-associated probe molecule that interacts with a buckled membrane, which has been created by lateral compression of a flat bilayer patch...
January 19, 2018: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/29350664/synovial-cysts-of-the-hip
#7
Andrea Angelini, Gabriele Zanotti, Antonio Berizzi, Guido Staffa, Elio Piccinini, Pietro Ruggieri
BACKGROUND: Synovial cysts of the hip are relatively rare lesions comparing to other joints. Patients are usually asymptomatic, but in some cases symptoms such as pain and/or compression of vessels or nerve could be present. Purpose of the study was to define clinical features and optimal management of synovial cyst of the hip joint through an accurate review of the literature. METHODS: We present three consecutive cases treated with three different therapeutic strategies: surgical excision, wait-and-see and needle aspiration...
January 16, 2018: Acta Bio-medica: Atenei Parmensis
https://www.readbyqxmd.com/read/29350629/conductive-films-of-silver-nanoparticles-as-novel-susceptors-for-induction-welding-of-thermoplastic-composites
#8
Rouhollah Dermanaki Farahani, Mathieu Janier, Martine Dubé
In the present work, a conductive film of silver nanoparticles (nAg) as a novel heating element type, called susceptor was developed and tested for induction welding of carbon fiber/polyphenylene sulfide (CF/PPS) thermoplastic composites, i.e., unidirectional pre-impregnated16 plies of CF/PPS compression-molded in a quasi-isotropic stacking sequence. The nAg were synthesized, dispersed in deionized (DI) water and casted onto a pure PPS film, resulting in a conductive film upon the evaporation of DI water and thermal post-annealing...
January 19, 2018: Nanotechnology
https://www.readbyqxmd.com/read/29350595/motor-network-recovery-in-patients-with-chronic-spinal-cord-compression-a-longitudinal-study-following-decompression-surgery
#9
Kayla Ryan, Sandy Goncalves, Robert Bartha, Neil Duggal
OBJECTIVE The authors used functional MRI to assess cortical reorganization of the motor network after chronic spinal cord compression and to characterize the plasticity that occurs following surgical intervention. METHODS A 3-T MRI scanner was used to acquire functional images of the brain in 22 patients with reversible cervical spinal cord compression and 10 control subjects. Controls performed a finger-tapping task on 3 different occasions (baseline, 6-week follow-up, and 6-month follow-up), whereas patients performed the identical task before surgery and again 6 weeks and 6 months after spinal decompression surgery...
January 19, 2018: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/29350383/which-position-should-we-take-during-newborn-resuscitation-a-prospective-randomized-multicentre-simulation-trial
#10
Jacek Smereka, Halla Kaminska, Wojciech Wieczorek, Marek Dabrowski, Jerzy Robert Ladny, Kurt Ruetzler, Lukasz Szarpak, Oliver Robak, Michael Frass
BACKGROUND: Early bystander cardiopulmonary resuscitation (CPR) for cardiac arrest is crucial in the chain of survival. Cardiac arrest in infants is rare but CPR is also performed in severe bradycardia. The European Resuscitation Council (ERC) and American Heart Association (AHA) guidelines recommend starting CPR and continuing it until the heart muscle is sufficiently oxygenated and regains sufficient contractility and function. Among the techniques of CPR that can be applied in newborns, the most common and therefore recommended by the ERC and AHA are the two-finger technique and two-thumb technique...
January 19, 2018: Kardiologia Polska
https://www.readbyqxmd.com/read/29350374/extension-of-a-coronary-intramural-hematoma-after-blunt-chest-trauma
#11
Maeng Real Park, Mun Ki Min, Ji Ho Ryu, Dae Sub Lee, Kang Ho Lee
Coronary artery dissection and intramural hematoma after blunt chest trauma are rare, but life-threatening, complications. Coronary intramural hematoma extension is even rarer. A 31-year-old man was transferred to our hospital for worsening left chest pain during while he was admitted at a nearby hospital due to blunt chest trauma. Bedside echocardiography showed akinesis of the left ventricular apex and anterior wall as well as hypokinesis of the mid-to-basal anteroseptal wall and mid-to-basal lateral and posterior walls of the left ventricle...
January 2018: Ulusal Travma Ve Acil Cerrahi Dergisi, Turkish Journal of Trauma & Emergency Surgery: TJTES
https://www.readbyqxmd.com/read/29350101/biomimetic-composite-scaffold-sis-mbg-exhibits-high-osteogenic-and-angiogenic-capacity
#12
Tingfang Sun, Man Liu, Sheng Yao, Yanhui Ji, Zekang Xiong, Kai Tang, Kaifang Chen, Hu Yang, Xiao-Dong Guo
Biomaterials with excellent osteogenic and angiogenic activities are desirable to repair massive bone defects. Decellularized matrix from porcine small intestinal submucosa (SIS) has attracted particular attention for tissue regeneration because it has strong angiogenic effects and retains plentiful bioactive components. However, it has inferior osteoinductivity and osteoconductivity. In this study, we developed porous composite of SIS combined with mesoporous bioactive glass (SIS/MBG) with the goal of improving the mechanical and biological properties...
January 19, 2018: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/29350014/-a-case-report-of-hysterical-paralysis-during-kyphoplasty-in-a-patient-with-compression-fracture-of-lumbar-vertebra
#13
Wen-Yue Wang, Li-Min Xie, Ling Shen
No abstract text is available yet for this article.
February 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29350009/-etiological-analysis-preventional-and-therapeutical-strategies-for-the-unsatisfied-cervical-posterior-decompression-surgery
#14
De-An Qin, Xiao-Guang Liu, Feng-Liang Wu, Zhong-Jun Liu, Feng-Shan Zhang, Yu Sun
OBJECTIVE: To discuss the causes of unsatisfied cervical posterior decompression surgery and describe the overhauling strategies and precaution. METHODS: The clinical data of 14 patients required revision surgery were retrospectively analyzed, and these patients with unsatisfied effects were due to cervical posterior decompression surgery from January 2012 to December 2014. Overhauling reasons were analyzed and then different revision procedures were performed. The functions of cervical cord and ambulation were evaluated respectively by modified Japanese Orthopedic Association(mJOA) score and Nurick grade according to the course order:preoperative for the first time, pre-revision and at final follow-up...
February 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29350002/-progress-on-laminoplasty-in-spinal-canal-disease
#15
Jian-Min Chen, Guo-Yin Liu, Yong Zhang, Jian-Ning Zhao
Surgery is the preferred method for the treatment of spinal canal disease, surgical method involves laminectomy and laminoplasty. The ideal spinal surgery not only should fully expose the spinal canal, completely resect the occupied position and remove the spinal cord compression, but also should maintain the stability of spinal biomechanics. Because of the different realization of clinician to safeguard and rebuild the spinal stabilization during opertion of spinal canal disease, and choice of surgical method and how to maintain the stability of spine biomechanics has become a hot of research in this field...
February 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29350000/-percutaneous-vertebroplasty-and-open-vertebroplasty-for-metastatic-spinal-tumor
#16
Xi-Jiang Zhao, Xin-Sheng Qi, Zhi-Xiang Mao, Quan-Ming Wang, Xiang-Bin Gao, Xian-Jun Zhang
OBJECTIVE: To explore the clinical application and therapeutic effect of percutaneous vertebroplasty(PVP) and open vertebroplasty for metastatic spinal tumor. METHODS: The clinical data of 126 patients with metastatic spinal tumor underwent surgery and obtained follow-up from January 2012 to March 2016 were retrospectively analyzed. These 126 cases were divided into two groups according to different operative methods. The metastatic tumor of 43 cases encroached vertebral canal oppressing spinal cord and nerve root, they were treated with open operation(open vertebroplasty group);and other 83 cases without obviously spinal cord or nerve root compression, or unfit for open operation, were treated with PVP (percutaneous vertebroplasty group) ...
February 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29349964/-biomechanical-study-of-the-lateral-wall-of-the-femur-in-the-treatment-of-femoral-intertrochanteric-fracture-with-intramedullary-or-extramedullary-fixation
#17
Yin-Sheng Wu, Bing Xu, Zuo-Qu Yu, Xiao-Feng Wang, Shou-Wang Dai, Min Li, Pei-Jian Tong
OBJECTIVE: To observe the biomechanical effects of the lateral wall of the femur in treating femoral intertrochanteric fractures with intramedullary or extramedullary fixation to guide the choice of clinical fixed methods. METHODS: Twelve adults femur specimens of intertrochanteric fractures were belong to the type A1 of the AO fracture classification and randomly divided into the lateral wall complete PFNA group, the lateral wall complete PF-LCP group, the lateral wall breakage PFNA group, lateral wall breakage PF-LCP group, every group had 3 specimens...
March 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29349957/-choices-of-the-internal-fixation-and-approaches-on-unstable-pelvic-ring-fractures
#18
Da-Wei Bi, Gang Zu, Lei Han, Yi-Min Chen, Hai-Tao Ma, Gang-Feng Hu, Yuan Zhu
OBJECTIVE: To discuss the suitable surgical approach and the internal fixation of unstable pelvic pelvic fractures. METHODS: From May 2010 to May 2015, 45 patients with unstable pelvic fractures were treated with different approaches and fixations, including 38 males and 7 females with an average age of 45 years ranging from 21 to 61 years. The course was within 2 weeks. According to Young-Burg classification, 23 patients were lateral compression injuries, 6 patients were vertical shearing injuries, 16 patients were anterior-posterior compression injuries...
March 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29349951/tissue-perfusion-rate-estimation-with-compression-based-photoacoustic-ultrasound-imaging
#19
Min Choi, A M James Shapiro, Roger Zemp
Tissue perfusion is essential for transporting blood oxygen and nutrients. Measurement of tissue perfusion rate would have a significant impact in clinical and preclinical arenas. However, there are few techniques to image this important parameter and they typically require contrast agents. A label-free methodology based on tissue compression and imaging with a high-frequency photoacoustic-ultrasound system is introduced for estimating and visualizing tissue perfusion rates. Experiments demonstrate statistically significant differences in depth-resolved perfusion rates in a human subject with various temperature exposure conditions...
January 2018: Journal of Biomedical Optics
https://www.readbyqxmd.com/read/29349853/piezotronic-tuning-of-potential-barriers-in-zno-bicrystals
#20
Peter Keil, Maximilian Trapp, Nikola Novak, Till Frömling, Hans-Joachim Kleebe, Jürgen Rödel
Coupling of magnetic, ferroelectric, or piezoelectric properties with charge transport at oxide interfaces provides the option to revolutionize classical electronics. Here, the modulation of electrostatic potential barriers at tailored ZnO bicrystal interfaces by stress-induced piezoelectric polarization is reported. Specimen design by epitaxial solid-state transformation allows for both optimal polarization vector alignment and tailoring of defect states at a semiconductor-semiconductor interface. Both quantities are probed by transmission electron microscopy...
January 19, 2018: Advanced Materials
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