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https://www.readbyqxmd.com/read/28437349/a-new-navigational-tool-for-pedicle-screw-placement-in-patients-with-severe-scoliosis-a-pilot-study-to-prove-feasibility-accuracy-and-identify-operative-challenges
#1
Michael Putzier, Patrick Strube, Riccardo Cecchinato, Claudio Lamartina, Eike K Hoff
STUDY DESIGN: Pilot study. OBJECTIVE: To develop and validate the feasibility and accuracy of a newly designed navigational spinal instrument guiding tool for patient-matched thoracic and lumbar pedicle screw placement in patients with severe scoliosis, and to identify intraoperative challenges that may be relevant. SUMMARY OF BACKGROUND DATA: Pedicle screw placement is challenging in severely rotated scoliotic spine with small diameters and asymmetrical shape of the pedicles and vertebrae...
May 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28435578/use-of-an-industrial-tungsten-carbide-drill-in-the-treatment-of-a-complex-fracture-in-a-patient-with-severe-osteopetrosis-a-case-report
#2
R Kunnasegaran, Y H Chan
The treatment of fractures in osteopetrosis can be complicated and difficult. We describe the use of an industrial grade tungsten carbide drill bit in the treatment of one of these complex fractures. An industrial grade tungsten carbide drill bit was used to fashion a medullary canal in the surgical treatment of a left peri-implant fracture of the neck of femur in a patient with osteopetrosis. The patient was successfully treated with a hemiarthroplasty with good functional outcomes. A tungsten carbide drill bit serves as an effective and safe option in the treatment of osteopetrotic femoral neck fractures...
March 2017: Malaysian Orthopaedic Journal
https://www.readbyqxmd.com/read/28435357/effectiveness-of-audiovisual-distraction-with-computerized-delivery-of-anesthesia-during-the-placement-of-stainless-steel-crowns-in-children-with-down-syndrome
#3
Kausar Sadia Fakhruddin, Hisham El Batawi, M O Gorduysus
OBJECTIVE: Assessing effectiveness of audiovisual (AV) distraction with/without video eyewear and computerized delivery system-intrasulcular (CDS-IS) for local anesthesia during placement of stainless steel crowns for the management of pathological tooth grinding in children with Down syndrome. MATERIALS AND METHODS: This clinical study includes 22 children (13 boys and 9 girls), with mean age being 7.1 years. The study involved three sessions 1-week apart. During Session I, dental prophylaxis to the upper jaw was done while watching a movie projected on the ceiling without video eyewear whereas prophylaxis for the lower jaw and impressions of both jaws were taken while watching another movie using eyewear projection...
January 2017: European Journal of Dentistry
https://www.readbyqxmd.com/read/28435269/efficacy-of-silk-fibroin-nano-silver-against-staphylococcus-aureus-biofilms-in-a-rabbit-model-of-sinusitis
#4
Minghui Jia, Zhongchun Chen, Yongwei Guo, Xin Chen, Xia Zhao
BACKGROUND: Staphylococcus aureus biofilms contribute significantly to the recalcitrant nature of chronic rhinosinusitis. In previous studies, it has been shown that silk fibroin-nano silver solution can eliminate S. aureus biofilms in vitro, which suggests a potential role of this novel agent in the treatment of biofilm-associated diseases, such as sinusitis. OBJECTIVE: The aim of this study was to investigate the efficacy of silk fibroin-nano silver solution as a topical anti-biofilm agent in a rabbit model of sinusitis...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28435113/microsurgical-and-endoscopic-anatomy-for-intradural-temporal-bone-drilling-and-applications-of-the-electromagnetic-navigation-system-various-extensions-of-the-retrosigmoid-approach
#5
Ken Matsushima, Noritaka Komune, Satoshi Matsuo, Michihiro Kohno
OBJECTIVE: The use of the retrosigmoid approach has recently been expanded by several modifications including the suprameatal, transmeatal, suprajugular, and inframeatal extensions. Intradural temporal bone drilling without damaging vital structures inside or beside the bone, such as the internal carotid artery and jugular bulb, is a key step for these extensions. This study aimed to examine the microsurgical and endoscopic anatomy of the extensions of the retrosigmoid approach, and to evaluate the clinical feasibility of an electromagnetic navigation system during intradural temporal bone drilling...
April 20, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28434045/slow-drilling-speeds-for-single-drill-implant-bed-preparation-experimental-in-vitro-study
#6
R A Delgado-Ruiz, E Velasco Ortega, G E Romanos, S Gerhke, I Newen, J L Calvo-Guirado
AIMS: To evaluate the real-time bone temperature changes during the preparation of the implant bed with a single-drill protocol with different drill designs and different slow drilling speeds in artificial type IV bone. MATERIALS AND METHODS: For this experimental in vitro study, 600 implant bed preparations were performed in 10 bovine bone disks using three test slow drilling speeds (50/150/300 rpm) and a control drilling speed (1200 rpm). The temperature at crestal and apical areas and time variations produced during drilling with three different drill designs with similar diameter and length but different geometry were recorded with real-life thermographic analysis...
April 22, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28431375/radioactivity-in-wastes-generated-from-shale-gas-exploration-and-production-north-eastern-poland
#7
Paweł Jodłowski, Jan Macuda, Jakub Nowak, Chau Nguyen Dinh
In the present study, the K-40, U-238, Ra-226, Pb-210, Ra-228 and Th-228 activity concentrations were measured in 64 samples of wastes generated from shale gas exploration in North-Eastern Poland. The measured samples consist of drill cuttings, solid phase of waste drilling muds, fracking fluids, return fracking fluids and waste proppants. The measured activity concentrations in solid samples vary in a wide range from 116 to around 1100 Bq/kg for K-40, from 14 to 393 Bq/kg for U-238, from 15 to 415 Bq/kg for Ra-226, from 12 to 391 Bq/kg for Pb-210, from a few Bq/kg to 516 Bq/kg for Ra-228 and from a few Bq/kg to 515 Bq/kg for Th-228...
April 18, 2017: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/28430720/the-effect-of-insertion-technique-on-temperatures-for-standard-and-self-drilling-external-fixation-pins
#8
Sarah Manoogian, Adam K Lee, James C Widmaier
OBJECTIVES: No studies have assessed the effects of parameters associated with insertion temperature in modern self-drilling external fixation pins. The current study assessed how varying the presence of irrigation, insertion speed, and force impacted the insertion temperatures of two types of standard and self-drilling external fixation half pins. METHODS: Seventy tests were conducted with ten trials for four conditions on self-drilling pins and three conditions for standard pins...
April 6, 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28422971/comparison-of-chemical-use-between-hydraulic-fracturing-acidizing-and-routine-oil-and-gas-development
#9
William T Stringfellow, Mary Kay Camarillo, Jeremy K Domen, Seth B C Shonkoff
The potential hazards and risks associated with well-stimulation in unconventional oil and gas development (hydraulic fracturing, acid fracturing, and matrix acidizing) have been investigated and evaluated and federal and state regulations requiring chemical disclosure for well-stimulation have been implemented as part of an overall risk management strategy for unconventional oil and gas development. Similar evaluations for chemicals used in other routine oil and gas development activities, such as maintenance acidizing, gravel packing, and well drilling, have not been previously conducted, in part due to a lack of reliable information concerning on-field chemical-use...
2017: PloS One
https://www.readbyqxmd.com/read/28422779/the-utility-of-high-fidelity-simulation-for-training-critical-care-fellows-in-the-management-of-extracorporeal-membrane-oxygenation-emergencies-a-randomized-controlled-trial
#10
Bishoy M Zakhary, Lily M Kam, Brian S Kaufman, Kevin J Felner
OBJECTIVE: Although extracorporeal membrane oxygenation volume has increased, proficiency in the technology requires extensive training. We compared traditional water-drill-based extracorporeal membrane oxygenation training with simulation-based extracorporeal membrane oxygenation training with the hypothesis that simulation-based training is superior. DESIGN: Randomized controlled trial. SETTING: Academic medical center. SUBJECTS: Pulmonary/critical care fellows...
April 18, 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28422583/game-simulation-drill-design-alters-the-speed-profiles-of-wheelchair-rugby-players
#11
James M Rhodes, Barry S Mason, Thomas A W Paulson, Victoria L Goosey-Tolfrey
PURPOSE: This study examined the speed profiles of elite wheelchair rugby (WCR) players during game-simulation training drills of differing player number and shot-clock regulations. A secondary aim was to determine whether the profiles were further influenced by players classification. METHODS: Eight elite WCR players (low-point n = 3; high-point n = 5) were monitored using a radio-frequency based, indoor tracking system during training sessions over a 5-month period...
April 19, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28420801/the-impact-of-laparoscopic-ovarian-drilling-on-amh-ovarian-reserve-a-meta-analysis
#12
Saad Aks Amer, Tarek T El Shamy, Cathryn James, Ali H Yosef, Ahmed Aboelfadle Mohamed
Laparoscopic ovarian drilling (LOD) has been widely utilised as an effective treatment in anovulatory women with polycystic ovarian syndrome (PCOS). However, there has been a growing concern over a possible damaging effect of this procedure on ovarian reserve. The objective of this study was to investigate the hypothesis that LOD compromises ovarian reserve as measured by post-operative changes in circulating anti-Müllerian hormone (AMH). This meta-analysis included all cohort studies as well as randomised controlled trials investigating serum AMH concentrations and other ovarian reserve markers in PCOS women undergoing LOD...
April 18, 2017: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/28419816/high-rate-of-osteoarthritis-after-osteochondritis-dissecans-fragment-excision-compared-with-surgical-restoration-at-a-mean-16-year-follow-up
#13
Thomas L Sanders, Ayoosh Pareek, Mitchel R Obey, Nicholas R Johnson, James L Carey, Michael J Stuart, Aaron J Krych
BACKGROUND: Osteochondritis dissecans (OCD) is a disorder of subchondral bone that causes adverse effects on the overlying cartilage and commonly affects the knee. The incidence of OCD and its long-term effect on the knee joint are controversial. Hypothesis/Purpose: The purpose of this study was to (1) evaluate the rate of osteoarthritis and knee arthroplasty in a population-based cohort of patients with OCD lesions treated operatively and (2) evaluate factors that may predispose patients to knee osteoarthritis and arthroplasty...
April 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28418271/use-of-a-novel-airway-kit-and-simulation-in-resident-training-on-emergent-pediatric-airways
#14
Jonathan M Melzer, Erin R S Hamersley, Thomas Q Gallagher
Objective Development of a novel pediatric airway kit and implementation with simulation to improve resident response to emergencies with the goal of improving patient safety. Methods Prospective study with 9 otolaryngology residents (postgraduate years 1-5) from our tertiary care institution. Nine simulated pediatric emergency airway drills were carried out with the existing system and a novel portable airway kit. Response times and time to successful airway control were noted with both the extant airway system and the new handheld kit...
April 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28417890/fire-safety-for-the-oral-and-maxillofacial-surgeon-and-surgical-staff
#15
REVIEW
LisaMarie Di Pasquale, Elie M Ferneini
Fire in the operating room is a life-threatening emergency that demands quick, efficient intervention. Because the circumstances surrounding fires are generally well-understood, virtually every operating room fire is preventable. Before every operating room case, thorough preprocedure "time outs" should address each team members' awareness of specific fire risks and agreement regarding fire concerns and emergency actions. Fire prevention centers on 3 constituent parts of the fire triad necessary for fire formation...
May 2017: Oral and Maxillofacial Surgery Clinics of North America
https://www.readbyqxmd.com/read/28414721/a-novel-smart-navigation-system-for-intramedullary-nailing-in-orthopedic-surgery
#16
Jaesuk Choi, Jihun Kim, Jae Youn Hwang, Minkyu Je, Jun-Young Kim, Shin-Yoon Kim
This paper proposes a novel smart surgical navigation system for intramedullary nailing in orthopedic surgery. Using a handle-integrated laser guidance module, the system can target a drill insertion point onto skin, indicating an accurate target position to perpendicularly access an invisible distal hole. The proposed handle-integration-based fixation of the laser guidance module precisely defines the relative position of the module with respect to the distal hole. Consequently, unlike conventional systems, the proposed system can indicate the target insertion point without any help from bulky and costly external position-tracking equipment that is usually required for compensating disturbances generated by external impacts...
2017: PloS One
https://www.readbyqxmd.com/read/28414141/temporal-role-of-macrophages-in-cancellous-bone-healing
#17
Olof Helge Sandberg, Love Tätting, Magnus Erik Bernhardsson, Per Aspenberg
Macrophages are important phagocytosing and cytokine producing cells with effects on fracture healing. We used clodronate-containing liposomes to reduce the number of macrophages, in order to study their role in the early phases of cancellous bone healing. Holes were drilled bilaterally into the cancellous bone of the proximal metaphysis of the tibia of 60 mice. A screw was inserted in the hole in the right tibia. The day of surgery was day 0. Clodronate-containing liposomes were injected intraperitoneally as a single injection either day -4 or -1 (before surgery) or day 1 or 3 (after surgery)...
April 14, 2017: Bone
https://www.readbyqxmd.com/read/28413339/efficient-generation-of-receiver-operating-characteristics-for-the-evaluation-of-damage-detection-in-practical-structural-health-monitoring-applications
#18
Chang Liu, Jacob Dobson, Peter Cawley
Permanently installed guided wave monitoring systems are attractive for monitoring large structures. By frequently interrogating the test structure over a long period of time, such systems have the potential to detect defects much earlier than with conventional one-off inspection, and reduce the time and labour cost involved. However, for the systems to be accepted under real operational conditions, their damage detection performance needs to be evaluated in these practical settings. The receiver operating characteristic (ROC) is an established performance metric for one-off inspections, but the generation of the ROC requires many test structures with realistic damage growth at different locations and different environmental conditions, and this is often impractical...
March 2017: Proceedings. Mathematical, Physical, and Engineering Sciences
https://www.readbyqxmd.com/read/28412983/piezoelectric-technology-in-otolaryngology-and-head-and-neck-surgery-a-review
#19
C Meller, T E Havas
BACKGROUND: Piezoelectric technology has existed for many years as a surgical tool for precise removal of soft tissue and bone. The existing literature regarding its use specifically for otolaryngology, and head and neck surgery was reviewed. METHODS: The databases Medline, the Cochrane Central Register of Controlled Trials, PubMed, Embase and Cambridge Scientific Abstracts were searched. Studies were selected and reviewed based on relevance. RESULTS: Sixty studies were identified and examined for evidence of benefits and disadvantages of piezoelectric surgery and its application in otolaryngology...
April 17, 2017: Journal of Laryngology and Otology
https://www.readbyqxmd.com/read/28412862/impact-of-transvaginal-hydrolaparoscopy-ovarian-drilling-on-ovarian-stromal-blood-flow-and-ovarian-volume-in-clomiphene-citrate-resistant-pcos-patients-a-case-control-study
#20
Pierluigi Giampaolino, Ilaria Morra, Nicoletta De Rosa, Angelo Cagnacci, Massimiliano Pellicano, Costantino Di Carlo, Carmine Nappi, Giuseppe Bifulco
Polycystic ovarian syndrome (PCOS) is the most common endocrine disorder in gynecology. In PCOS patients vascularization parameters are altered. Transvaginal hydrolaparoscopy (THL) is a mini-invasive approach for ovarian drilling in PCOS patients. In this study, we assessed the effect of ovarian drilling using THL on ovarian volume (OV) and vascularization index (VI) using 3D power Doppler ultrasonography in CC-resistant PCOS patients. A case-control study on 123 CC-resistant PCOS women who underwent THL ovarian drilling was performed...
April 17, 2017: Gynecological Endocrinology
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