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https://www.readbyqxmd.com/read/28727442/manipulating-semicrystalline-polymers-in-confinement
#1
Nitin Shingne, Markus Geuss, Thomas Thurn-Albrecht, Hans-Werner Schmidt, Carmen Mijangos, Martin Steinhart, Jaime Martin
Because final properties of nanoscale polymeric structures are largely determined by the solid-state microstructure of the confined polymer, it is imperative not only to understand how the microstructure of polymers develops under nanoscale confinement but also to establish means to manipulate it. Here we present a series of processing strategies, adapted from methods used in bulk polymer processing, that allow to control the solidification of polymer materials confined in the nanopores of anodic aluminium oxide (AAO) templates...
July 20, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28725516/how-i-do-it-the-role-of-flexible-hand-held-2%C3%AE-thulium-laser-fiber-in-microsurgical-removal-of-acoustic-neuromas
#2
Luciano Mastronardi, Guglielmo Cacciotti, Raffaele Roperto, Maria Pia Tonelli, Ettore Carpineta
Aims  We performed a retrospective nonrandomized study to analyze the results of microsurgery of acoustic neuromas (AN) using 2μ-thulium flexible hand-held laser fiber (Revolix jr). Methods  From September 2010 to September 2015, 89 patients suffering from AN have been operated on with microsurgical technique via retrosigmoid approach. In 37 cases, tumor resection was performed with the assistance of 2μ-thulium flexible hand-held laser fiber (L-group). Eight cases operated on with the assistance of CO 2 hand-held flexible laser fiber were excluded from this study...
August 2017: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/28720040/distal-radius-fractures-aaos-appropriate-use-criteria-versus-actual-management-at-a-level-i-trauma-center
#3
James C Kyriakedes, Eugene Y Tsai, Douglas S Weinberg, Charles C Yu, Harry A Hoyen, Kevin Malone, Blaine T Bafus
BACKGROUND: The aim of this study is to determine whether the American Academy of Orthopaedic Surgeons' (AAOS) Appropriate Use Criteria (AUC) for distal radius fractures correlates with actual treatment by orthopedic hand surgeons at a level I trauma center. METHODS: ICD-9 codes were used to retrospectively identify patients who presented with wrist fractures over 1 year. Patients with isolated distal radius fractures were evaluated using the AAOS AUC application for distal radius fractures...
February 1, 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28713108/current-prescribing-practices-for-antibiotic-prophylaxis-a-survey-of-dental-practitioners
#4
Leah S Spittle, Kathleen B Muzzin, Patricia R Campbell, Janice P DeWald, Francisco Rivera-Hidalgo
AIM: Antibiotic prophylaxis guidelines have been developed for health care and dentistry. The authors examined whether dentists were following the 2007 American Heart Association (AHA) and the 2012 American Association of Orthopaedic Surgeons (AAOS) recommendations for antibiotic prophylaxis. MATERIALS AND METHODS: A survey was sent to 600 dentists in the south-central region of the United States. The survey examined dentists' prescribing practices for patients with cardiac and prosthetic joint replacements, antibiotic regimen prescribed, confidence in their prescription decisions, and dentistry's contribution to antibiotic resistance...
July 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28702567/controlled-self-assemblies-of-polystyrene-block-polydimethylsiloxane-micelles-in-cylindrical-confinement-through-a-micelle-solution-wetting-method-and-rayleigh-instability-driven-transformation
#5
Hao-Wen Ko, Takeshi Higuchi, Chun-Wei Chang, Ming-Hsiang Cheng, Komei Isono, Mu-Huan Chi, Hiroshi Jinnai, Jiun-Tai Chen
Block copolymer micelles have been extensively discussed for many decades because of their applications, such as lithography and drug delivery. However, controlling the morphologies of nanostructure assembly using block copolymer micelles as building elements remains a great challenge. In this work, we developed a novel route to induce micelle assembly in confined geometries. Polystyrene-block-polydimethylsiloxane (PS-b-PDMS) micelle solutions were used to prepare micelle nanostructures, and the critical parameters affecting the morphologies were determined...
July 12, 2017: Soft Matter
https://www.readbyqxmd.com/read/28690462/open-wedge-distal-femoral-osteotomy-accuracy-of-correction-and-patient-outcomes
#6
Osama Elattar, Ishaan Swarup, Aaron Lam, Joseph Nguyen, Austin Fragomen, S Robert Rozbruch
BACKGROUND: There is a renewed interest in joint preservation surgery, and lateral opening wedge distal femoral osteotomy (DFO), a joint-preserving procedure, has been used to treat symptomatic genu valgum when the deformity originates in the distal femur. QUESTIONS/PURPOSES: This study aimed to measure the accuracy of lateral opening wedge DFO in achieving deformity correction using radiographic parameters. In addition, the ability of lateral opening wedge DFO to improve patient outcomes as measured by Short Form Health Survey (SF-36) scores and American Academy of Orthopedic Surgeons (AAOS) lower limb module (LLM) scores leading to successful joint preservation was assessed...
July 2017: HSS Journal: the Musculoskeletal Journal of Hospital for Special Surgery
https://www.readbyqxmd.com/read/28686029/8ocb-and-8cb-liquid-crystals-confined-in-nanoporous-alumina-effect-of-confinement-on-the-structure-and-dynamics
#7
Aristoula Selevou, George Papamokos, Martin Steinhart, George Floudas
The effect of oxygen substitution is studied in two homologous compounds of n-cyanobiphenyls with n = 8 in the bulk and under confinement within self-ordered nanoporous alumina (AAO). Oxygen substitution in 8OCB increases the dipole moment and stabilizes the crystalline, smectic, and nematic phases to higher temperatures relative to 8CB. Within their smectic- A (SmA) phase both 8CB and 8OCB behave as weak viscoelastic solids with low shear moduli reflecting the underlying supramolecular defect structure. Dielectric spectroscopy assisted by DFT calculations identified strong dipolar associations within the isotropic phases characterized by a Kirkwood-Fröhlich interaction parameter, g ∼ 0...
July 20, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28677393/switchable-plasmonic-film-using-nanoconfined-liquid-crystals
#8
Seong Ho Ryu, Dong Ki Yoon
Structural coloration using plasmonic particles has received substantial attention due to its robust, permanent, and scalable characteristics across the full color range. In this study, a plasmonic structure based on a porous anodic aluminum oxide (AAO) film coated with a metallic film was fabricated. Colors were varied by changing the refractive index, which was achieved with a convolution with nanopores of AAO film and an infiltrated liquid crystal (LC) material. LC molecules confined in the porous AAO film were uniformly aligned, and they exhibited pore-size-dependent colors because of the specific refractive index...
July 11, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28674732/preservation-of-hearing-following-awake-surgery-via-the-retrosigmoid-approach-for-vestibular-schwannomas-in-eight-consecutive-patients
#9
Nobusada Shinoura, Akira Midorikawa, Kentaro Hiromitsu, Shoko Saito, Ryoji Yamada
BACKGROUND: Hearing preservation in patients with vestibular schwannomas remains difficult by microsurgery or radiosurgery. METHOD: In this study, awake surgery via the retrosigmoid approach was performed for vestibular schwannomas (volume, 11.6 ± 11.2 ml; range, 1.3-26.4 ml) in eight consecutive patients with preoperative quartering of pure tone audiometry (PTA) of 53 ± 27 dB. RESULTS: After surgery, hearing was preserved in seven patients and improved in one patient...
July 3, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28666048/readability-of-orthopedic-trauma-patient-education-materials-on-the-internet
#10
Rohith Mohan, Paul H Yi, Saam Morshed
In this study, we used the Flesch-Kincaid Readability Scale to determine the readability levels of orthopedic trauma patient education materials on the American Academy of Orthopaedic Surgeons (AAOS) website and to examine how subspecialty coauthorship affects readability level. Included articles from the AAOS online patient education library and the AAOS OrthoPortal website were categorized as trauma or broken bones and injuries on the AAOS online library or were screened by study authors for relevance to orthopedic trauma...
May 2017: American Journal of Orthopedics
https://www.readbyqxmd.com/read/28662423/biomechanical-research-on-contour-cage-with-transacetabular-screws-fixation-in-revision-total-hip-arthroplasty
#11
Haobo Wu, Chiyuan Ma, Jisheng Ran, Danfeng Xu, An Liu, Miao Sun, Lidong Wu, Shigui Yan
BACKGROUND: Use biomechanical technique to access the strain distribution and stability of Contour anti-protrusion cage with or without the whole circumference acetabular cup fixation by the transacetabular screws. METHODS: Pelvic specimens from 10 male cadavers were used for the biomechanical test. The models of type C bone defect were copied according to the AAOS classification. Group 1: the contour reconstruction ring was fixed only by flange screws; Group 2: the contour reconstruction ring was fixed both by flange screws and transacetabular screws in dome...
June 21, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28657567/bone-scan-in-painful-knee-arthroplasty-obsolete-or-actual-examination
#12
Giuseppe Niccoli, Domenico Mercurio, Fabrizio Cortese
ptic loosening, instability and infection are the major causes of TKA failure. For many years, nuclear medicine (NM) imaging was helpful to frame a painful total joint arthroplasty. The differentiation of septic from aseptic prosthetic loosening is critical. The latest AAOS guidelines to detect periprosthetic joint infection (PJI) restrict the role of NM scintigraphy. On the other hand, several studies suggest that NM imaging plays an important role in the evaluation of patients with painful prosthesis, but its specificity in differentiating aseptic loosening from infection is low...
June 7, 2017: Acta Bio-medica: Atenei Parmensis
https://www.readbyqxmd.com/read/28657288/structural-engineering-for-high-sensitivity-ultrathin-pressure-sensors-based-on-wrinkled-graphene-and-anodic-aluminum-oxide-membrane
#13
Wenjun Chen, Xuchun Gui, Binghao Liang, Rongliang Yang, Yongjia Zheng, Chengchun Zhao, Xinming Li, Hai Zhu, Zikang Tang
Nature-motivated pressure sensors have been greatly important components integrated into flexible electronics and applied in artificial intelligence. Here, we report a high sensitivity, ultrathin, and transparent pressure sensor based on wrinkled graphene prepared by a facile liquid-phase shrink method. Two pieces of wrinkled graphene are face to face assembled into a pressure sensor, in which a porous anodic aluminum oxide (AAO) membrane with the thickness of only 200 nm was used to insulate the two layers of graphene...
July 19, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28655476/quality-measures-in-orthopaedic-sports-medicine-a%C3%A2-systematic-review
#14
REVIEW
Geoffrey D Abrams, Daniel R Greenberg, Jason L Dragoo, Marc R Safran, Robin N Kamal
PURPOSE: To report the current quality measures that are applicable to orthopaedic sports medicine physicians. METHODS: Six databases were searched with a customized search term to identify quality measures relevant to orthopaedic sports medicine surgeons: MEDLINE/PubMed, EMBASE, the National Quality Forum (NQF) Quality Positioning System (QPS), the Agency for Healthcare Research and Quality (AHRQ) National Quality Measures Clearinghouse (NQMC), the Physician Quality Reporting System (PQRS) database, and the American Academy of Orthopaedic Surgeons (AAOS) website...
June 24, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28623470/reconstruction-of-aaos-type-iii-and-iv-acetabular-defects-with-the-ganz-reinforcement-ring-high-failure-in-pelvic-discontinuity
#15
Cynthia Hourscht, Mohammad K Abdelnasser, Sufian S Ahmad, Lukas Kraler, Marius J Keel, Klaus A Siebenrock, Frank M Klenke
BACKGROUND: Large acetabular defects and pelvic discontinuity represent complex problems in revision total hip arthroplasty. This study aimed to investigate whether reconstruction with the Ganz reinforcement ring would provide durable function in large acetabular defects. PATIENTS AND METHODS: 46 hips (45 patients, 19 male, 26 female, mean age 68 years) with AAOS type III and IV defects undergoing acetabular revision with the Ganz reinforcement ring were evaluated at a mean follow-up of 74 months (24-161 months)...
June 16, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28617721/analysis-of-a-physician-led-team-based-care-model-for-the-treatment-of-glaucoma
#16
Nelson S Winkler, Gena M Damento, Sunil S Khanna, David O Hodge, Cheryl L Khanna
PURPOSE: To determine the effect of a protocol for a new physician-led, team-based glaucoma care model implemented in 2008 at Mayo Clinic's campus in Rochester, Minnesota (MCR), to increase conformance with the American Academy of Ophthalmology (AAO) Preferred Practice Pattern guidelines for treatment of primary open-angle glaucoma. METHODS: Records of 591 patients with newly diagnosed glaucoma were assessed retrospectively for the completion of 9 AAO Preferred Practice Pattern recommended metrics including measured corneal thickness, intraocular pressure (IOP), cup to disk ratio, visual acuity, recorded IOP target, gonioscopy, fundus photos, ocular coherence tomography, and visual field in the 3 years before and 3 years after protocol implementation...
June 14, 2017: Journal of Glaucoma
https://www.readbyqxmd.com/read/28606840/open-reduction-in-pilon-variant-posterior-malleolar-fractures-radiological-and-clinical-evaluation
#17
Erhan Sukur, Yunus Emre Akman, Huseyin Bahadır Gokcen, Esra Circi Ozyurek, Ahmet Senel, Yusuf Ozturkmen
BACKGROUND: Pilon variant posterior malleolar (PVPM) fractures significantly disrupt joint congruency and cause tibiotalar instability. They are often underestimated and inadequately treated. PURPOSE: This study assessed the outcomes of surgical treatment of this subtype of malleolar fracture, and examined the importance of computed tomography (CT) in diagnosis and surgical treatment. MATERIAL AND METHODS: CT images and radiographs of 67 patients with trimalleolar ankle fractures were retrospectively analyzed...
June 9, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28590386/can-we-agree-on-expectations-and-assessments-of-graduating-residents-2016-aoa-critical-issues-symposium
#18
Markuu Nousiainen, Ian Incoll, Terrance Peabody, J Lawrence Marsh
Orthopaedic educators are responsible for training a prepared and competent workforce that will provide effective care for a growing number of patients with musculoskeletal conditions. Currently, there are both internal and external forces that pose substantial challenges to medical students, residents, program directors, faculty members, and chairs in achieving this goal. One area of particular concern is the education of surgeons, whose knowledge and professional behavior must be matched by their ability to acquire procedural skills...
June 7, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28588241/tunable-magneto-optical-kerr-effects-of-nanoporous-thin-films
#19
Weiwei Zhang, Jianjun Li, Xiaokun Ding, Philippe Pernod, Nicolas Tiercelin, Yujun Song
Magnetoplasmonics, combining magnetic and plasmonic functions, has attracted increasing attention owing to its unique magnetic and optical properties in various nano-architectures. In this work, Ag, CoFeB and ITO layers are fabricated on anodic aluminum oxide (AAO) porous films to form hybrid multi-layered nanoporous thin films by magnetron sputtering deposition process. The designed nanostructure supports localized surface plasmon resonance (LSPR) and tunable magneto-optical (MO) activity, namely, the sign inversion, which can be controlled by AAO porous film geometry (pore diameter and inter-pore spacing) flexibly...
June 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28582337/aaos-appropriate-use-criteria-management-of-patients-with-orthopaedic-implants-undergoing-dental-procedures
#20
Harold W Rees
No abstract text is available yet for this article.
June 2, 2017: Journal of the American Academy of Orthopaedic Surgeons
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