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Surgical and Simulation

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https://www.readbyqxmd.com/read/29330656/3d-imaging-3d-printing-and-3d-virtual-planning-in-endodontics
#1
REVIEW
Pratik Shah, B S Chong
The adoption and adaptation of recent advances in digital technology, such as three-dimensional (3D) printed objects and haptic simulators, in dentistry have influenced teaching and/or management of cases involving implant, craniofacial, maxillofacial, orthognathic and periodontal treatments. 3D printed models and guides may help operators plan and tackle complicated non-surgical and surgical endodontic treatment and may aid skill acquisition. Haptic simulators may assist in the development of competency in endodontic procedures through the acquisition of psycho-motor skills...
January 12, 2018: Clinical Oral Investigations
https://www.readbyqxmd.com/read/29325962/systematic-review-of-factors-influencing-surgical-performance-practical-recommendations-for-microsurgical-procedures-in-neurosurgery
#2
Evgenii Belykh, Naomi R Onaka, Iraklii T Abramov, Kaan Yağmurlu, Vadim A Byvaltsev, Robert F Spetzler, Peter Nakaji, Mark C Preul
BACKGROUND: Microneurosurgical techniques involve complex manual skills and hand-eye coordination that require substantial training. Many factors affect microneurosurgical skills. The goal of this study was to use a systematic evidence-based approach to analyze the quality of evidence for intrinsic and extrinsic factors that influence microneurosurgical performance and to make weighted practical recommendations. MATERIALS AND METHODS: A literature search of factors that may impact microsurgical performance was conducted using PubMed and Embase...
January 8, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29325763/clinical-experience-with-three-dimensional-printing-techniques-in-orthopedic-trauma
#3
Ji Wan Kim, Yongkoo Lee, Joonho Seo, Jai Hyung Park, Yong Min Seo, Sung Soo Kim, Hyun Chul Shon
BACKGROUND: To report our experiences with the use of three-dimensional (3D) printing in the field of orthopedic trauma. METHODS: This retrospective study enrolled 24 patients from three university teaching hospitals in whom 3D printing technique was applied: 14 patients with acetabular fractures and 10 patients with clavicular shaft fractures. We summarized our experiences with 3D printed bone models. RESULTS: Three-dimensional printed acetabular models improved understanding of complex acetabular anatomy and fracture pattern to plan the optimal positioning of a reduction clamp and the trajectory of screws...
January 8, 2018: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29323794/skills-transfer-to-sinus-surgery-via-a-low-cost-simulation-based-curriculum
#4
R Alex Harbison, Jennifer Dunlap, Ian M Humphreys, Greg E Davis
BACKGROUND: Surgical skill development outside the operating room aims to improve technique and subsequent patient safety. The purpose of this study was to evaluate the correlation between technical and cognitive skills with cadaveric endoscopic sinus surgery (ESS) performance and change in ESS performance before and after implementation of a dedicated ESS simulation-based and knowledge-based curriculum. METHODS: A before-after study design was implemented among 10 medical students and 10 junior otolaryngology residents...
January 11, 2018: International Forum of Allergy & Rhinology
https://www.readbyqxmd.com/read/29320924/a-model-to-evaluate-pauwels-type-iii-femoral-neck-fractures
#5
Kevin M Magone, Jonas K Owen, Bernard P Kemker, Oliver Bloom, Sidney Martin, Patrick Atkinson
While many femoral neck fractures can be reliably treated with surgical intervention, Pauwels III femoral neck fractures in the young adult population continue to be a challenging injury, and there is no consensus on optimal treatment. As such, there are past and ongoing biomechanical studies to evaluate the fixation provided by different constructs for this inherently unstable fracture. While many investigations rely on cadavers to evaluate the biomechanical performance of a construct, significant inter-subject variability can confound the analysis...
January 1, 2018: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/29317347/using-virtual-reality-to-control-preoperative-anxiety-in-ambulatory-surgery-patients-a-pilot-study-in-maxillofacial-and-plastic-surgery
#6
L Ganry, B Hersant, M SidAhmed-Mezi, G Dhonneur, J P Meningaud
INTRODUCTION: Preoperative anxiety may lead to medical and surgical complications, behavioral problems and emotional distress. The most common means of prevention are based on using medication and, more recently, hypnosis. The aim of our study was to determine whether a virtual reality (VR) program presenting natural scenes could be part of a new therapy to reduce patients' preoperative anxiety. MATERIALS AND METHODS: Our prospective pilot study consisted of a single-blind trial in skin cancer surgery at the Henri Mondor Teaching Hospital in France...
January 6, 2018: Journal of Stomatology, Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29317156/surgical-space-suits-increase-particle-and-microbiological-emission-rates-in-a-simulated-surgical-environment
#7
Praveen Vijaysegaran, Luke D Knibbs, Lidia Morawska, Ross W Crawford
BACKGROUND: The role of space suits in the prevention of orthopedic prosthetic joint infection remains unclear. Recent evidence suggests that space suits may in fact contribute to increased infection rates, with bioaerosol emissions from space suits identified as a potential cause. This study aimed to compare the particle and microbiological emission rates (PER and MER) of space suits and standard surgical clothing. METHODS: A comparison of emission rates between space suits and standard surgical clothing was performed in a simulated surgical environment during 5 separate experiments...
December 14, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29317045/evaluation-of-a-novel-thoracic-entry-device-versus-needle-decompression-in-a-tension-pneumothorax-swine-model
#8
John Kuckelman, Mike Derickson, Cody Phillips, Morgan Barron, Shannon Marko, Matthew Eckert, Matthew Martin
INTRODUCTION: Tension pneumothorax (tPTX) remains a major cause of preventable death in trauma. Needle decompression (ND) has up to a 60% failure rate. METHODS: Post-mortem swine used. Interventions were randomized to 14G-needle decompression (ND, n = 25), bladed trocar with 36Fr cannula (BTW, n = 16), bladed trocar alone (BTWO, n = 16) and surgical thoracostomy (ST = 11). Simulated tPTX was created to a pressure(p) of 20 mmHg. RESULTS: Success (p < 5 mmHg by 120 s) was seen in 41 of 68 (60%) interventions...
January 5, 2018: American Journal of Surgery
https://www.readbyqxmd.com/read/29316347/effect-of-heated-air-blanket-on-the-dispersion-of-squames-in-an-operating-room
#9
X He, S Karra, P Pakseresht, S V Apte, S Elghobashi
High-fidelity, predictive fluid flow simulations of the interactions between the rising thermal plumes from forced air warming blower and the ultraclean ventilation air in an operating (OR) are conducted to explore whether this complex flow can impact the dispersion of squames to the surgical site. A large-eddy simulation (LES), accurately capturing the spatio-temporal evolution of the flow in three-dimensions together with the trajectories of squames, is performed for a realistic OR consisting of an operating table (OT), side tables, surgical lamps, medical staff, and a patient...
January 9, 2018: International Journal for Numerical Methods in Biomedical Engineering
https://www.readbyqxmd.com/read/29314184/quantitative-evaluation-of-retrieved-reverse-total-shoulder-arthroplasty-liner-surface-deviation-and-volumetric-wear
#10
Michael D Kurdziel, Michael D Newton, Samantha Hartner, Kevin C Baker, J Michael Wiater
Polyethylene wear is a known complication in total joint arthroplasty, however, in vivo wear rates in reverse total shoulder arthroplasty (RTSA) remain largely unknown. This study aimed to quantify volumetric and surface deviation changes in retrieved RTSA humeral liners using a novel micro-computed tomography (µCT)-based technique. After IRB-approval, 32 humeral liners (single manufacturer and model) with term-of-service greater than 90 days were analyzed. Clinical demographics and surgical data were collected via chart review...
January 4, 2018: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29313124/development-of-a-train-to-proficiency-curriculum-for-the-technical-skills-component-of-the-fundamentals-of-endoscopic-surgery-exam
#11
Susan Gearhart, Michael Marohn, Saowanee Ngamruengphong, Gina Adrales, Oluwafemi Owodunni, Kim Duncan, Emil Petrusa, Pamela Lipsett
BACKGROUND: The demonstration of competency in endoscopy is required prior to obtaining American Board of Surgery Certification. To demonstrate competency, the resident must pass a national high-stakes cognitive test and a technical skills exam on a virtual reality simulator. The purpose of this preliminary study was to design a proficiency-based endoscopy simulation curriculum to meet this competency requirement. METHODS: This is a mixed methods prospective cohort study at a single academic medical institution...
January 8, 2018: Surgical Endoscopy
https://www.readbyqxmd.com/read/29310844/modification-of-the-measurement-of-the-major-variables-in-mandibular-condylar-fractures-angulation-of-sidewards-displacement-and-shortening-of-the-height-of-the-ramus
#12
S P Chang, Y Yang, L Q Shi, Y W Liu, Y Liu, Q Ma
Our aim was to improve the accuracy of measurement of the angulation and the shortening of the height of the ramus in fractures of the mandibular condyle using modified methods. We analysed spiral computed tomography (CT) of 67 unilateral fractures with the OsiriX v 5.0 (©Pixmeo Sarl) and Mimics 19.0 (©2016 Materialise NV, Belgium) and analysed them with SPSS (version 24.0, IBM® SPSS®). Angulation was measured using both the traditional method and our modified method. The results showed significant difference (p = 0...
January 5, 2018: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/29306100/nursing-students-perceptions-of-a-video-based-serious-game-s-educational-value-a-pilot-study
#13
Hege M Johnsen, Mariann Fossum, Pirashanthie Vivekananda-Schmidt, Ann Fruhling, Åshild Slettebø
BACKGROUND: Despite an increasing number of serious games (SGs) in nursing education, few evaluation studies specifically address their educational value in terms of face, content, and construct validity. OBJECTIVES: To assess nursing students' perceptions of a video-based SG in terms of face, content, and construct validity. In addition, the study assessed perceptions of usability, individual factors, and preferences regarding future use. DESIGN: A pilot study was conducted...
December 28, 2017: Nurse Education Today
https://www.readbyqxmd.com/read/29304194/the-montreal-augmentation-mammoplasty-operation-mamo-simulator-an-alternative-method-to-train-and-assess-competence-in-breast-augmentation-procedures
#14
Roy Kazan, Alex Viezel-Mathieu, Shantale Cyr, Thomas M Hemmerling, Mirko S Gilardino
Background: Surgical residents' exposure to aesthetic procedures remains limited in residency training. The development of the Montreal Augmentation Mammoplasty Operation (MAMO) simulator aims to provide an adjunctive training method and assessment tool to complement the evolving competency-based surgical curriculum. Objectives: To perform face, content and construct validations of the MAMO simulator for subpectoral breast augmentation procedures and assess the reliability of the assessment scales used...
January 3, 2018: Aesthetic Surgery Journal
https://www.readbyqxmd.com/read/29303808/gathering-validity-evidence-for-surgical-simulation-a-systematic-review
#15
Nanna Jo Borgersen, Therese M H Naur, Stine M D Sørensen, Flemming Bjerrum, Lars Konge, Yousif Subhi, Ann Sofia S Thomsen
OBJECTIVE: To identify current trends in the use of validity frameworks in surgical simulation, to provide an overview of the evidence behind the assessment of technical skills in all surgical specialties, and to present recommendations and guidelines for future validity studies. SUMMARY OF BACKGROUND DATA: Validity evidence for assessment tools used in the evaluation of surgical performance is of paramount importance to ensure valid and reliable assessment of skills...
January 4, 2018: Annals of Surgery
https://www.readbyqxmd.com/read/29302937/stress-analysis-of-transcatheter-aortic-valve-leaflets-under-dynamic-loading-effect-of-reduced-tissue-thickness
#16
Mostafa Abbasi, Ali N Azadani
BACKGROUND: In order to accommodate transcatheter valves to miniaturized catheters, the leaflet thickness must be reduced to a value which is typically less than that of surgical bioprostheses. The study aim was to use finite-element simulations to determine the impact of the thickness reduction on stress and strain distribution. METHODS: A 23 mm transcatheter aortic valve (TAV) was modelled based on the Edwards SAPIEN XT (Edwards Lifesciences, Irvine, CA, USA)...
July 2017: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/29301180/virtual-preoperative-simulation-for-excision-of-spinal-tumors-surgeon-processing-of-medical-computer-assisted-design-software
#17
Jung Hwan Lee, In Ho Han, Byung Kwan Choi, Kyoung Hyup Nam, Dong Ha Kim, Chi Seung Lee
As medical computer-aided design (CAD) has improved, virtual 3-dimensional medical images have been gaining more easily without any special practice. These images can be applied to various clinical fields. This article illustrates virtual preoperative simulation for excision of spinal tumors using medical CAD software. The software was used directly by the surgeon. The process of virtual preoperative simulation for spinal tumor surgery was found to be not inordinately complicated. And, virtual simulation was helpful in determining surgical steps as well as understanding the surgical anatomy...
December 2017: Korean Journal of Spine
https://www.readbyqxmd.com/read/29301168/design-and-development-of-a-novel-distance-learning-telementoring-system-using-off-the-shelf-materials-and-software
#18
James C Rosser, Jeffrey P Fleming, Timothy B Legare, Katherine M Choi, Jamie Nakagiri, Elliot Griffith
OBJECTIVE: To design and develop a distance learning (DL) system for the transference of laparoscopic surgery knowledge and skill constructed from off-the-shelf materials and commercially available software. INTRODUCTION: Minimally invasive surgery offers significant benefits over traditional surgical procedures, but adoption rates for many procedures are low. Skill and confidence deficits are two of the culprits. DL combined with simulation training and telementoring may address these issues with scale...
December 22, 2017: Surgical Technology International
https://www.readbyqxmd.com/read/29301059/objective-validation-of-perfusion-based-human-cadaveric-simulation-training-model-for-management-of-internal-carotid-artery-injury-in-endoscopic-endonasal-sinus-and-skull-base-surgery
#19
Jasper Shen, Kevin Hur, Zhipeng Zhang, Michael Minneti, Martin Pham, Bozena Wrobel, Gabriel Zada
BACKGROUND: The emergence of minimally invasive endoscopic endonasal skull base surgery has necessitated reproducible and realistic simulators of rare vascular injuries. OBJECTIVE: To assess the face and content validity of an innovative perfusion-based cadaveric model developed to simulate internal carotid artery (ICA) injury during endoscopic surgery. METHODS: Otolaryngology and neurosurgery trainees attempted 3 consecutive trials of endoscopic control of a parasellar ICA injury, with standardized technical feedback...
December 29, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29300276/optimizing-surgical-capacity-for-a-rural-hospital-through-monte-carlo-simulation
#20
Rachel Ozer, Gregory Richards
This article describes the application of Monte Carlo simulation to evaluate operating room (OR) utilization at a small rural hospital in the province of Ontario, Canada. Using input factors that include the duration of procedures, the number of days of operation, and the shift duration, the simulation identifies ways of improving the capacity of the hospital's OR. The analysis was used to implement changes that led to a 38% increase in the number of procedures completed. The hospital also has created capacity for further growth and is adding both new service types and additional revenue-generating contract services...
January 2018: Journal for Healthcare Quality: Official Publication of the National Association for Healthcare Quality
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