keyword
MENU ▼
Read by QxMD icon Read
search

Simulation AND Orthop*

keyword
https://www.readbyqxmd.com/read/28817244/key-developments-that-impacted-the-field-of-mechanobiology-and-mechanotransduction
#1
Michelle Wall, David Butler, Alicia El Haj, Josephine C Bodle, Elizabeth G Loboa, Albert J Banes
Advances in mechanobiology have evolved through insights from multiple disciplines including structural engineering, biomechanics, vascular biology, and orthopaedics. In this paper, we reviewed the impact of key reports related to the study of applied loads on tissues and cells and the resulting signal transduction pathways. We addressed how technology has helped advance the burgeoning field of mechanobiology (over 33,600 publications from 1970-2016). We analyzed the impact of critical ideas and then determined how these concepts influenced the mechanobiology field by looking at the citation frequency of these reports as well as tracking how the overall number of citations within the field changed over time...
August 17, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28817161/biomechanical-evaluation-of-unicortical-stress-risers-of-the-proximal-humerus-associated-with-pectoralis-major-repair
#2
David J Wilson, Brian P Milam, William F Scully, Todd P Balog, Kyong S Min, Christopher S Chen, Bryant G Marchant, Edward D Arrington
Proximal humerus fracture after pectoralis major tendon repair has been recently reported. Although this complication is rare, it may be possible to decrease such risk using newer techniques for myotenodesis. This study was designed to evaluate various unicortical stress risers created at the proximal humeral metadiaphysis during myotenodesis for repair of pectoralis major ruptures. A simulated pectoralis major myotenodesis was performed using fourth-generation Sawbones (N=30). Using previously described anatomic landmarks for the tendinous insertion, 3 repair techniques were compared: bone trough, tenodesis screws, and suture anchors (N=10 each)...
August 17, 2017: Orthopedics
https://www.readbyqxmd.com/read/28802910/inter-rater-reliability-of-physical-abuse-determinations-in-young-children-with-fractures
#3
Katherine E Buesser, John M Leventhal, Julie R Gaither, Victoria Tate, Daniel R Cooperman, Rebecca L Moles, Cicero T Silva, Lauren J Ehrlich, Melinda S Sharkey
As there is no "gold standard" in determining whether a fracture is caused by accident or abuse, agreement among medical providers is paramount. Using abstracted medical record data from 551 children <36months of age presenting to a pediatric emergency department, we examined the extent of agreement between specialists who evaluate children with fractures for suspected abuse. To simulate clinical scenarios, two pediatric orthopaedists and two child abuse pediatricians (CAPs) reviewed the full abstraction and imaging, whereas the two pediatric radiologists reviewed a brief history and imaging...
August 10, 2017: Child Abuse & Neglect
https://www.readbyqxmd.com/read/28796072/one-visualization-simulation-operation-system-for-distal-femoral-fracture
#4
Dan Wang, Ning Li, Ming Luo, Yao-Kun Chen
A computer-aided 3-dimensional (3D) visualization operation simulation system based on computer-aided design (CAD) Unigraphics NX and Mimics software was established to provide orthopedic surgeons with an actual and reliable system in treating of distal femoral fracture.According to the preoperative CT data, 3D reconstruction of the distal femoral fracture could be achieved by the Mimics software. Then, the CAD Unigraphics NX software was used to measure the model function of all the related surgical instruments, including less invasive stabilization system (LISS) and retrograde intramedullary nail fixation...
August 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28773116/zirconia-hydroxyapatite-composites-synthesized-via-sol-gel-influence-of-hydroxyapatite-content-and-heating-on-their-biological-properties
#5
Flavia Bollino, Emilia Armenia, Elisabetta Tranquillo
Zirconia (ZrO₂) and zirconia-based glasses and ceramics are materials proposed for use in the dental and orthopedic fields. In this work, ZrO₂ glass was modified by adding different amounts of bioactive and biocompatible hydroxyapatite (HAp). ZrO₂/HAp composites were synthesized via the sol-gel method and heated to different temperatures to induce modifications of their chemical structure, as ascertained by Fourier transform infrared spectroscopy (FTIR) analysis. The aim was to investigate the effect of both HAp content and heating on the biological performances of ZrO₂...
July 5, 2017: Materials
https://www.readbyqxmd.com/read/28772717/rgdc-peptide-induced-biomimetic-calcium-phosphate-coating-formed-on-az31-magnesium-alloy
#6
Lin Cao, Lina Wang, Lingying Fan, Wenjun Xiao, Bingpeng Lin, Yimeng Xu, Jun Liang, Baocheng Cao
Magnesium alloys as biodegradable metal implants have received a lot of interest in biomedical applications. However, magnesium alloys have extremely high corrosion rates a in physiological environment, which have limited their application in the orthopedic field. In this study, calcium phosphate compounds (Ca-P) coating was prepared by arginine-glycine-aspartic acid-cysteine (RGDC) peptide-induced mineralization in 1.5 simulated body fluid (SBF) to improve the corrosion resistance and biocompatibility of the AZ31 magnesium alloys...
March 28, 2017: Materials
https://www.readbyqxmd.com/read/28756763/the-effect-of-omitting-an-early-population-based-vision-screen-in-the-netherlands-a-micro-simulation-model-approach
#7
F Sloot, Eam Heijnsdijk, J H Groenewoud, F Goudsmit, E W Steyerberg, H J de Koning, H J Simonsz
Objective To estimate the effect of omitting an individual screen from a child vision screening programme on the detection of amblyopia in the Netherlands. A previous study (Rotterdam Amblyopia Screening Effectiveness Study) suggested that the three screens carried out between 6 and 24 months contributed little. Methods We developed a micro-simulation model that approximated the birth-cohort data from the previous study, in which 2964 children had completed follow-up at age 7, and 100 amblyopia cases were detected...
September 2017: Journal of Medical Screening
https://www.readbyqxmd.com/read/28747337/comparisons-of-external-fixator-combined-with-limited-internal-fixation-and-open-reduction-and-internal-fixation-for-sanders-type-2-calcaneal-fractures-finite-element-analysis-and-clinical-outcome
#8
M Pan, L Chai, F Xue, L Ding, G Tang, B Lv
OBJECTIVES: The aim of this study was to compare the biomechanical stability and clinical outcome of external fixator combined with limited internal fixation (EFLIF) and open reduction and internal fixation (ORIF) in treating Sanders type 2 calcaneal fractures. METHODS: Two types of fixation systems were selected for finite element analysis and a dual cohort study. Two fixation systems were simulated to fix the fracture in a finite element model. The relative displacement and stress distribution were analysed and compared...
July 2017: Bone & Joint Research
https://www.readbyqxmd.com/read/28736125/minimally-invasive-treatment-of-displaced-femoral-shaft-fractures-with-a-teleoperated-robot-assisted-surgical-system
#9
Qing Zhu, Bin Liang, Xingsong Wang, Xiaogang Sun, Liming Wang
BACKGROUND: Minimally invasive surgical operation of intramedullary (IM) nailing is a standard technique for treating diaphyseal fractures. However, in addition to its advantages, there are some drawbacks such as the frequent occurrence of malalignment, physical fatigue and high radiation exposure to medical staff. The use of robotic and navigation techniques is promising treatments for femoral fractures. MATERIALS AND METHODS: This paper presents a novel robot-assisted manipulator for femoral shaft fracture reduction with indirect contact with the femur...
July 12, 2017: Injury
https://www.readbyqxmd.com/read/28733037/efficient-probabilistic-finite-element-analysis-of-a-lumbar-motion-segment
#10
Dana J Coombs, Paul J Rullkoetter, Peter J Laz
Finite element models of the lumbar spine are useful in assessing biomechanics and performance of implants. Models are often developed using the anatomy of an individual subject. Average mechanical property values for the annulus and other soft tissue structures are typically utilized from the literature, as data for the same subject are not available. However, these properties can have significant variability. While probabilistic methods enable the impact of soft tissue property variability on spine mechanics to be assessed, they often require lengthy computation times...
July 11, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28727318/appropriate-cyclic-tensile-strain-promotes-biological-changes-of-cranial-base-synchondrosis-chondrocytes
#11
F Chu, Q Feng, Z Hu, G Shen
OBJECTIVES: This study was designed to clarify biological changes of cranial base synchondrosis chondrocytes (CBSCs) upon cyclic tensile strain (CTS) loading which simulated orthopaedic mechanical protraction on cranial base synchondroses (CBS). MATERIAL AND METHODS: A two-step digestion method was used to isolate CBSCs obtained from 1-week-old Sprague Dawley rats. Immunohistochemical staining of type II collagen and Sox9 was conducted to identify chondrocytes. A CTS of 1 Hz and 10% elongation was applied to the second passage of CBSCs by FX-5000™ Tension System for 24 hours...
August 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28726223/comprehensive-study-on-parameter-sensitivity-for-flow-and-nutrient-modeling-in-the-hydrological-simulation-program-fortran-model
#12
Chuan Luo, Zhaofu Li, Min Wu, Kaixia Jiang, Xiaomin Chen, Hengpeng Li
Numerous parameters are used to construct the HSPF (Hydrological Simulation Program Fortran) model, which results in significant difficulty in calibrating the model. Parameter sensitivity analysis is an efficient method to identify important model parameters. Through this method, a model's calibration process can be simplified on the basis of understanding the model's structure. This study investigated the sensitivity of the flow and nutrient parameters of HSPF using the DSA (differential sensitivity analysis) method in the Xitiaoxi watershed, China...
July 19, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28712882/perfusion-of-muscle-flaps-independent-of-the-anatomical-vascular-pedicle-pedicle-autonomy
#13
K Bradshaw, M Wagels
INTRODUCTION: Free muscle flaps are being used more commonly for complex lower limb reconstruction. Up to 33% of flaps used to reconstruct lower limb trauma will require an orthopaedic procedure after reconstruction. To date there have been only case reports detailing the variable survival of muscle flaps after actual or simulated pedicle injury and the process and timeframe of neovascularisation remains undefined. We aim to show that perfusion of a muscle flap is possible after injury to its anatomical vascular pedicle...
June 7, 2017: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/28712686/using-touch-surgery-to-improve-surgical-education-in-low-and-middle-income-settings-a-randomized-control-trial
#14
Gisele Juru Bunogerane, Kathryn Taylor, Yihan Lin, Ainhoa Costas-Chavarri
BACKGROUND/OBJECTIVE: There is a severe surgical workforce shortage in Rwanda. Innovative educational tools must be introduced to train more residents and increase surgical capacity. Touch Surgery (TS) is a smartphone application that offers trainees the opportunity to practice operations; however, its effect is unknown in low- and middle-income countries. Our objectives were to determine the training effect of TS and its feasibility for use in surgery education in a low-resource setting...
July 13, 2017: Journal of Surgical Education
https://www.readbyqxmd.com/read/28705649/a-new-approach-for-endoscopicneurolysis-of-the-supra-scapular-nerve-at-the-spinoglenoidnotch-a-preliminary-cadaver-study
#15
Marc-Alexandre Loirat, Maxime Tierny, Anthony Hervé, Arthur Lignel, Eric Berton, Mickaël Ropars, Hervé Thomazeau
INTRODUCTION: The suprascapular nerve (SSN) can become compressedatits 2 scapularattachments: the suprascapular and the spinoglenoid notch. The objective of this study was to describe a new arthroscopicapproach for SSN neurolysis at the spinoglenoid notch. METHOD: 10 cadaver shoulderswereused. Two weredissected to simulate the "classical" arthroscopic approach and to help in the creation of a new "direct medial retrospinal" approach. Eight othershoulders were used to validatethis new approach, with control of the whole juxta-glenoidcourse of the SSN as criterion of success...
July 10, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28698836/copper-as-an-alternative-antimicrobial-coating-for-implants-an-in-vitro-study
#16
Claudia Bergemann, Sarah Zaatreh, Katharina Wegner, Kathleen Arndt, Andreas Podbielski, Rainer Bader, Cornelia Prinz, Ulrich Lembke, J Barbara Nebe
AIM: To investigate osteoconductive and antimicrobial properties of a titanium-copper-nitride (TiCuN) film and an additional BONIT(®) coating on titanium substrates. METHODS: For micro-structuring, the surface of titanium test samples was modified by titanium plasma spray (TPS). On the TPS-coated samples, the TiCuN layer was deposited by physical vapor deposition. The BONIT(®) layer was coated electrochemically. The concentration of copper ions released from TiCuN films was measured by atomic absorption spectrometry...
June 24, 2017: World Journal of Transplantation
https://www.readbyqxmd.com/read/28698016/the-timing-and-importance-of-motor-skills-course-in-knee-arthroscopy-training
#17
Engin Çetinkaya, Hakan Çift, Ahmet Aybar, Ersin Erçin, Gamze Babür Güler, Oğuz Poyanlı
OBJECTIVES: The aim of this prospective study is to evaluate the impact of the simulation training program in learning duration of arthroscopic motor skills. Furthermore, we investigated the difference between junior and experienced residents in the improvement of arthroscopic motor skills duration. METHODS: We established 2 study groups according to participants' year of experience in orthopedic residency with junior group residents with three years or less than three years experience as group 1 and experienced group with over 3 years of experience as group 2...
July 8, 2017: Acta Orthopaedica et Traumatologica Turcica
https://www.readbyqxmd.com/read/28680331/immunotoxicity-evaluation-of-novel-bioactive-composites-in-male-mice-as-promising-orthopaedic-implants
#18
Gehan T El-Bassyouni, Mariam G Eshak, Ibrahim A H Barakat, Wagdy K B Khalil
OBJECTIVE: In orthopaedics, novel bioactive composites are largely needed to improve the synthetic achievement of the implants. In this work, semiconducting metal oxides such as SiO2, TiO2, and ZrO2 particles (Ps) were used individually and in different ratios to obtain different biphasic composites. The immunotoxicity of these composites was tested to inspect the potential toxicity prior to their use in further medical applications. MATERIALS AND METHODS: In vitro mineralisation ability was inspected by soaking the composites in simulated body fluid (SBF)...
2017: Central-European Journal of Immunology
https://www.readbyqxmd.com/read/28675248/quick-bacteriophage-mediated-bioluminescence-assay-for-detecting-staphylococcus-spp-in-sonicate-fluid-of-orthopaedic-artificial-joints
#19
Katja Šuster, Aleš Podgornik, Andrej Cör
Staphylococcus spp. accounts for up to two thirds of all microorganisms causing prosthetic joint infections, with Staphylococcus aureus and Staphylococcus epidermidis being the major cause. The present study describes a diagnostic model to detect staphylococci using a specific bacteriophage and bioluminescence detection, exploring the possibility of its use on sonicate fluid of orthopaedic artificial joints. Intracellular adenosine-5'-triphosphate release by bacteriophage mediated lysis of staphylococci was assessed to determine optimal parameters for detection...
July 4, 2017: New Microbiologica
https://www.readbyqxmd.com/read/28651976/observational-learning-during-simulation-based-training-in-arthroscopy-is-it-useful-to-novices
#20
Marie-Eve LeBel, John Haverstock, Sayra Cristancho, Lucia van Eimeren, Gavin Buckingham
OBJECTIVE: Observing experts constitutes an important and common learning experience for surgical residents before operating under direct guidance. However, studies suggest that exclusively observing experts may induce suboptimal motor learning, and watching errors from non-experts performing simple motor tasks may generate better performance. We investigated whether observational learning is transferrable to arthroscopy learning using virtual reality (VR) simulation. SETTING/DESIGN: In our surgical simulation laboratory, we compared students learning basic skills on a VR arthroscopy simulator after watching an expert video demonstration of VR arthroscopy tasks or a non-expert video demonstration of the same tasks to a Control group without video demonstration...
June 23, 2017: Journal of Surgical Education
keyword
keyword
70353
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"