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https://www.readbyqxmd.com/read/28431451/-experience-with-the-hind-foot-relaxation-boot
#1
Hans Zwipp, Michael Borrmann, Eberhard Walter
The goal of this paper is to report our experience with hindfoot fractures using our specially developed boot, with a follow-up of 557 cases. This boot works like the well-known Allgöwer-Röck ortheses (ARO), but is a hybrid between a boot and an orthesis. It allows full weightbearing without using crutches and completely protects an acutely operated hind foot fracture, hind foot arthrodesis or a hind foot fracture which is suitable for conservative treatment. In its first generation, this boot was custom made and used in 408 cases, from March 1999 to February 2011...
April 21, 2017: Zeitschrift Für Orthopädie und Unfallchirurgie
https://www.readbyqxmd.com/read/28431361/uncertainty-quantification-and-validation-of-3d-lattice-scaffolds-for-computer-aided-biomedical-applications
#2
Recep M Gorguluarslan, Seung-Kyum Choi, Christopher J Saldana
A methodology is proposed for uncertainty quantification and validation to accurately predict the mechanical response of lattice structures used in the design of scaffolds. Effective structural properties of the scaffolds are characterized using a developed multi-level stochastic upscaling process that propagates the quantified uncertainties at strut level to the lattice structure level. To obtain realistic simulation models for the stochastic upscaling process and minimize the experimental cost, high-resolution finite element models of individual struts were reconstructed from the micro-CT scan images of lattice structures which are fabricated by selective laser melting...
April 12, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28431004/a-giant-compressive-non-coronary-valsalva-sinus-aneurysm
#3
Christophe Le Terrier, Adela Rohnean, Nizar Khelil, Ivan Philip
No abstract text is available yet for this article.
April 18, 2017: European Heart Journal
https://www.readbyqxmd.com/read/28430749/neonatal-cervical-osteomyelitis-with-bilateral-upper-limb-paresis
#4
Elad Ben-Meir, Marina Rubinshtein, Itai Pessach, Galia Barkai, Nathan Keller, Chen Hoffman, Zeev Feldman, Gidi Paret
Neonatal cervical osteomyelitis is extremely rare, with only a few cases having been reported. We report a neonate with cervical osteomyelitis and extensive inflammation of the surrounded tissues that caused nerve root compression and upper limb paresis.
April 19, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28430706/rare-pleurostomophora-richardsiae-mass-causing-transient-nasolacrimal-duct-obstruction
#5
Md Shahid Alam, D Vaidehi, K Lily Therese, Mohammad Javed Ali
Transient nasolacrimal duct obstruction secondary to a mass lesion compressing the sac or sac-duct junction is rare. We report a case of a young female who presented to us with complaints of watering and a mass lesion in the lacrimal sac region. An organized perilacrimal mass filled with thick pultaceous material was noted during surgery. Following the drainage of the mass lesion, irrigation of the lacrimal system was freely patent. Microbiological examination and DNA sequencing targeting interspacer region was suggestive of Pleurostomophora richardsiae species...
April 20, 2017: Ophthalmic Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28430445/controlling-the-roughness-of-langmuir-blodgett-monolayers
#6
Gregory J Silverberg, Arthur A McClelland, Sarah Griesse-Nascimento, Camille Girabawe, Julian P Kadow, Lakshminarayanan Mahadevan, Chad David Vecitis
Controlling the surface roughness of thin films with nanoscale precision is of significant interest for the rational design of surface coatings. Although wrinkling and buckling of Langmuir monolayers under compression has been demonstrated for several years, there is currently no method to precisely control this behavior during compression and thereby modify the surface roughness of deposited films. Here, we combine conventional Langmuir phase analysis with a novel dynamic viscoelasticity measurement to simply and accurately observe the jamming transition of monolayers of silica spheres, graphene oxide, and surfactant...
April 21, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28430326/in-vivo-intraocular-pressure-monitoring-during-microincision-vitrectomy-with-and-without-active-control-of-infusion-pressure
#7
Hyun S Yang, Young I Yun, Jong H Park, Sangkyung Choi, Je M Woo
PURPOSE: To evaluate intraocular pressure (IOP) fluctuation during vitrectomy, we directly monitored IOP in vivo using 2 vitrectomy machines with or without constant infusion pressure monitoring and control. METHODS: Among 61 eyes of 61 consecutive patients, 32 were assigned to the Accurus system (group 1) and 29 were assigned to the Constellation system (group 2) in this prospective case series. The IOP fluctuations were evaluated during routine vitrectomy procedures...
April 4, 2017: European Journal of Ophthalmology
https://www.readbyqxmd.com/read/28430048/a-spinal-epidural-abscess-due-to-streptobacillus-moniliformis-infection-following-a-rat-bite-case-report
#8
Alexander Hammer, Dorit Wolff, Walter Geißdörfer, Michael Schrey, Renate Ziegler, Hans-Herbert Steiner, Christian Bogdan
The authors describe the case of a 40-year-old man suffering from an epidural abscess in the thoracic spine due to a rarely isolated pathogen, Streptobacillus moniliformis, the causative agent of rat bite fever. Besides diffuse abdominal pain, ataxia, paresthesia, hypesthesia, and enhanced reflexes of the lower extremities, the patient suffered from a decreased sensation of bladder filling. His history was also positive for a rat bite 6 weeks earlier. Magnetic resonance imaging showed an epidural, space-occupying lesion compressing the spinal cord at the vertebral levels of T6-8...
April 21, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28429808/slow-creep-in-soft-granular-packings
#9
Ishan Srivastava, Timothy S Fisher
Transient creep mechanisms in soft granular packings are studied numerically using a constant pressure and constant stress simulation method. Rapid compression followed by slow dilation is predicted on the basis of a logarithmic creep phenomenon. Characteristic scales of creep strain and time exhibit a power-law dependence on jamming pressure, and they diverge at the jamming point. Microscopic analysis indicates the existence of a correlation between rheology and nonaffine fluctuations. Localized regions of large strain appear during creep and grow in magnitude and size at short times...
April 21, 2017: Soft Matter
https://www.readbyqxmd.com/read/28429800/straight-and-rigid-flagellar-hook-made-by-insertion-of-the-flgg-specific-sequence-into-flge
#10
Koichi D Hiraoka, Yusuke V Morimoto, Yumi Inoue, Takashi Fujii, Tomoko Miyata, Fumiaki Makino, Tohru Minamino, Keiichi Namba
The bacterial flagellar hook connects the helical flagellar filament to the rotary motor at its base. Bending flexibility of the hook allows the helical filaments to form a bundle behind the cell body to produce thrust for bacterial motility. The hook protein FlgE shows considerable sequence and structural similarities to the distal rod protein FlgG; however, the hook is supercoiled and flexible as a universal joint whereas the rod is straight and rigid as a drive shaft. A short FlgG specific sequence (GSS) has been postulated to confer the rigidity on the FlgG rod, and insertion of GSS at the position between Phe-42 and Ala-43 of FlgE actually made the hook straight...
April 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28429723/pressure-self-focusing-effect-and-novel-methods-for-increasing-the-maximum-pressure-in-traditional-and-rotational-diamond-anvil-cells
#11
Biao Feng, Valery I Levitas
The main principles of producing a region near the center of a sample, compressed in a diamond anvil cell (DAC), with a very high pressure gradient and, consequently, with high pressure are predicted theoretically. The revealed phenomenon of generating extremely high pressure gradient is called the pressure self-focusing effect. Initial analytical predictions utilized generalization of a simplified equilibrium equation. Then, the results are refined using our recent advanced model for elastoplastic material under high pressures in finite element method (FEM) simulations...
April 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28429700/acute-lower-extremity-paralysis-after-lower-extremity-endovascular-intervention
#12
Semi Öztürk, Muhsin Kalyoncuoğlu, Gündüz Durmuş, Adem Topçu, Mehmet Can
A 61-year-old man underwent successful percutaneous revascularization of both lower limbs with multiple stent implantations. Paralysis of right lower limb was noticed after completion of procedure when transferring the patient from angiography table. Since hematoma compressing lumbosacral neural plexus could be a fatal complication, computed tomography (CT) image was taken. CT showed bulge of distended bladder compressing stent struts. Following placement of Foley catheter, condition improved and he was subsequently discharged uneventfully...
April 2017: Türk Kardiyoloji Derneği Arşivi: Türk Kardiyoloji Derneğinin Yayın Organıdır
https://www.readbyqxmd.com/read/28429632/comparison-of-piezoresistive-sensor-to-picopress%C3%A2-in-in-vitro-interface-pressure-measurement
#13
Yung-Wei Chi, Kuo-Hao Tseng, Ruya Li, Tingrui Pan
Objective Interface pressure, the sine qua non for compression therapy, is rarely measured in clinical practice and scientific research. The goal of this study aimed to compare and examine the accuracy between a commercially available piezoresistive sensor and PicoPress® (Microlab, Padua, Italy) using the cylinder cuff model to measure in-vitro interface pressure. Method Ten piezoresistive sensors were calibrated using the National Institute of Standard and Technology certified manometer, and compared to PicoPress® using cylinder cuff model from 20 to 120 mmHg...
January 1, 2017: Phlebology
https://www.readbyqxmd.com/read/28429363/two-unilateral-puncturation-comparative-analyses-of-multiple-level-fresh-osteoporotic-vertebral-body-compression-fractures-treated-with-percutaneous-vertebroplasty-guided-by-c-arm-fluoroscopy-or-in-senile-patients
#14
J-C Xu, G-H Wu, L-L Zhou, X-J Yang, J-T Liu
OBJECTIVE:  To compare the curative effects of two unilateral puncturation percutaneous vertebroplasty (PVP) for the pain caused by multiple-level osteoporotic vertebral body compression fractures (OVCF) in senile patients. PATIENTS AND METHODS: From June 2008 to November 2014, eighty-nine cases suffering from fresh multiple-level OVCF were randomly divided into experimental group (n=51) and control group (n=38). Patients underwent PVP guided by C-arm fluoroscopy in the prone position...
April 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28429176/the-log-linear-response-function-of-the-bounded-number-line-task-is-unrelated-to-the-psychological-representation-of-quantity
#15
Dale J Cohen, Philip T Quinlan
The bounded number-line task has been used extensively to assess the numerical competence of both children and adults. One consistent finding has been that young children display a logarithmic response function, whereas older children and adults display a more linear response function. Traditionally, these log-linear functions have been interpreted as providing a transparent window onto the nature of the participants' psychological representations of quantity (termed here a direct response strategy). Here we show that the direct response strategy produces the log-linear response function regardless of whether the psychological representation of quantity is compressive or expansive...
April 20, 2017: Psychonomic Bulletin & Review
https://www.readbyqxmd.com/read/28428973/compression-of-high-density-0-16-pc-electron-bunches-through-high-field-gradients-for-ultrafast-single-shot-electron-diffraction-the-compact-rf-gun
#16
Hazem Daoud, Klaus Floettmann, R J Dwayne Miller
We present an RF gun design for single shot ultrafast electron diffraction experiments that can produce sub-100 fs high-charge electron bunches in the 130 keV energy range. Our simulations show that our proposed half-cell RF cavity is capable of producing 137 keV, 27 fs rms (60 fs FWHM), 10(6) electron bunches with an rms spot size of 276 μm and a transverse coherence length of 2.0 nm. The required operation power is 9.2 kW, significantly lower than conventional rf cavity designs and a key design feature...
July 2017: Structural Dynamics (Melville, N.Y.)
https://www.readbyqxmd.com/read/28428927/limitations-of-personalized-medicine-and-gene-assays-for-breast-cancer
#17
David Tiberi, Laura Masucci, Daniel Shedid, Isabelle Roy, Toni Vu, Erica Patocskai, André Robidoux, Philip Wong
Adjuvant systemic treatments reduce the risk of breast cancer recurrence following the local treatment of primary stage I-III breast cancers. For patients with hormone-positive breast cancers receiving hormonal therapy, the risk of distant recurrence is under 20% and therefore, many patients may potentially be spared of chemotherapy. Consequently, several molecular signatures based on gene expression were developed to better determine which breast cancer patients would benefit from chemotherapy. We present the case of a 62-year-old woman diagnosed with an early stage hormone receptor-positive breast cancer that was treated with a partial mastectomy...
March 17, 2017: Curēus
https://www.readbyqxmd.com/read/28428759/morphological-regeneration-and-functional-recovery-of-neuromuscular-junctions-after-tourniquet-induced-injuries-in-mouse-hindlimb
#18
Huiyin Tu, Dongze Zhang, Ryan M Corrick, Robert L Muelleman, Michael C Wadman, Yu-Long Li
Tourniquet application and its subsequent release cause serious injuries to the skeletal muscle, nerve, and neuromuscular junction (NMJ) due to mechanical compression and ischemia-reperfusion (IR). Monitoring structural and functional repair of the NMJ, nerve, and skeletal muscle after tourniquet-induced injuries is beneficial in exploring potential cellular and molecular mechanisms responsible for tourniquet-induced injuries, and for establishing effective therapeutic interventions. Here, we observed long-term morphological and functional changes of the NMJ in a murine model of tourniquet-induced hindlimb injuries...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28428721/proposed-criteria-to-differentiate-heterogeneous-eosinophilic-gastrointestinal-disorders-of-the-esophagus-including-eosinophilic-esophageal-myositis
#19
Hiroki Sato, Nao Nakajima, Kazuya Takahashi, Go Hasegawa, Ken-Ichi Mizuno, Satoru Hashimoto, Satoshi Ikarashi, Kazunao Hayashi, Yutaka Honda, Junji Yokoyama, Yuichi Sato, Shuji Terai
AIM: To define clinical criteria to differentiate eosinophilic gastrointestinal disorder (EoGD) in the esophagus. METHODS: Our criteria were defined based on the analyses of the clinical presentation of eosinophilic esophagitis (EoE), subepithelial eosinophilic esophagitis (sEoE) and eosinophilic esophageal myositis (EoEM), identified by endoscopy, manometry and serum immunoglobulin E levels (s-IgE), in combination with histological and polymerase chain reaction analyses on esophageal tissue samples...
April 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28428541/tissue-engineered-cornea-constructed-with-compressed-collagen-and-laser-perforated-electrospun-mat
#20
Bin Kong, Wei Sun, Guoshi Chen, Song Tang, Ming Li, Zengwu Shao, Shengli Mi
While Plastic Compressed (PC) collagen technique is often used to fabricate bioengineered constructs, PC collagen gels are too weak to be sutured or conveniently handled for clinical applications. To overcome this limitation, electrospun poly (lactic-co-glycolide) (PLGA) mats, which have excellent biocompatibility and mechanical properties, were combined with PC collagen to fabricate sandwich-like hybrid constructs. By laser-perforating holes with different sizes and spacings in the electrospun mats to regulate the mechanical properties and light transmittance of the hybrid constructs, we produced hybrid constructs with properties very suitable to apply in corneal tissue engineering...
April 20, 2017: Scientific Reports
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