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Surgical and Simulation

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https://www.readbyqxmd.com/read/28728331/surgery-requiring-detailed-preoperative-simulation-and-scar-de-epithelialization-to-repair-severe-postoperative-scarring-from-gastroschisis
#1
Naohiro Ishii, Tomito Oji, Kazuo Kishi
We present the case of a patient with severe postoperative scarring from surgical treatment for gastroschisis, with the intestine located immediately under the dermal scar. Although many patients are unsatisfied with the results of scar repair treatment, few reports exist regarding severe or difficult cases involving the surgical repair of postoperative scar contracture. We achieved an excellent result via simulation involving graph paper drawings that were generated using computed tomography images as a reference, followed by dermal scar deepithelialization...
July 2017: Archives of Plastic Surgery
https://www.readbyqxmd.com/read/28728324/the-chicken-thigh-adductor-profundus-free-muscle-flap-a-novel-validated-non-living-microsurgery-simulation-training-model
#2
Georgios Pafitanis, Yasmine Serrar, Maria Raveendran, Ali Ghanem, Simon Myers
BACKGROUND: Simulation training is becoming an increasingly important component of skills acquisition in surgical specialties, including Plastic Surgery. Non-living simulation models have an established place in Plastic Surgical microsurgery training, and support the principles of replacement, reduction and refinement of animal use. A more sophisticated version of the basic chicken thigh microsurgery model has been developed to include dissection of a type 1-muscle flap and is described and validated here...
July 2017: Archives of Plastic Surgery
https://www.readbyqxmd.com/read/28728078/femoral-head-necrosis-a-finite-element-analysis-of-common-and-novel-surgical-techniques
#3
Myriam Cilla, Sara Checa, Bernd Preininger, Tobias Winkler, Carsten Perka, Georg N Duda, Matthias Pumberger
BACKGROUND: Femoral head necrosis is a common cause of secondary osteoarthritis. At the early stages, treatment strategies are normally based on core decompression techniques, where the number, location and diameter of the drilling holes varies depending on the selected approach. The purpose of this study was to investigate the risk of femoral head, neck and subtrochanteric fracture following six different core decompression techniques. MATERIALS: Five common and a newly proposed techniques were analyzed in respect to their biomechanical consequences using finite element analysis...
July 6, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28727647/surgical-anatomy-of-the-uterosacral-ligament-colpopexy
#4
Lauren N Siff, Karl Jallad, Lisa C Hickman, Mark D Walters
OBJECTIVE: The aim of this study was to describe the relationship of the uterosacral ligament (USL) to the ureter and rectum along a surgeon's target location for suture placement under conditions simulating live surgery. METHODS: Dissections were performed in 11 unembalmed female cadavers. Steps were taken to identify the USL simulating USL colpopexy. Pins were placed in the midportion of the USL at the level of the IS, and at 1-cm, 2-cm, and 3-cm increments traveling proximally toward the sacrum (Fig...
July 20, 2017: Female Pelvic Medicine & Reconstructive Surgery
https://www.readbyqxmd.com/read/28726116/a-computationally-efficient-method-for-hand-eye-calibration
#5
Zhiqiang Zhang, Lin Zhang, Guang-Zhong Yang
PURPOSE: Surgical robots with cooperative control and semiautonomous features have shown increasing clinical potential, particularly for repetitive tasks under imaging and vision guidance. Effective performance of an autonomous task requires accurate hand-eye calibration so that the transformation between the robot coordinate frame and the camera coordinates is well defined. In practice, due to changes in surgical instruments, online hand-eye calibration must be performed regularly. In order to ensure seamless execution of the surgical procedure without affecting the normal surgical workflow, it is important to derive fast and efficient hand-eye calibration methods...
July 19, 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/28723767/return-of-the-cadaver-key-role-of-anatomic-dissection-for-plastic-surgery-resident-training
#6
Swenn Maxence Krähenbühl, Paul Čvančara, Thomas Stieglitz, Raphaël Bonvin, Murielle Michetti, Marjorie Flahaut, Sébastien Durand, Lina Deghayli, Lee Ann Applegate, Wassim Raffoul
Successful Plastic Surgery Residency training is subjected to evolving society pressure of lower hourly work weeks imposed by external committees, labor laws, and increased public awareness of patient care quality. Although innovative measures for simulation training of surgery are appearing, there is also the realization that basic anatomy training should be re-enforced and cadaver dissection is of utmost importance for surgical techniques.In the development of new technology for implantable neurostimulatory electrodes for the management of phantom limb pain in amputee patients, a design of a cadaveric model has been developed with detailed steps for innovative transfascicular insertion of electrodes...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28720354/training-modalities-in-robot-assisted-urologic-surgery-a-systematic-review
#7
REVIEW
Catherine Elizabeth Lovegrove, Oussama Elhage, M Shamim Khan, Giacomo Novara, Alex Mottrie, Prokar Dasgupta, Kamran Ahmed
CONTEXT: Novel surgical techniques demand that surgical training adapts to the need for technical and nontechnical skills. OBJECTIVE: To identify training methods available for robot-assisted surgical (RAS) training in urology, evaluate their effectiveness in terms of validation, educational impact, acceptability, and cost effectiveness, and assess their effect on learning curves (LCs). EVIDENCE ACQUISITION: A systematic review following Preferred Reporting Items for Systematic Reviews and Meta-analysis guidelines searched Ovid Medline, Embase, PsycINFO, and the Cochrane Library...
February 2017: European Urology Focus
https://www.readbyqxmd.com/read/28719002/eyeslam-real-time-simultaneous-localization-and-mapping-of-retinal-vessels-during-intraocular-microsurgery
#8
Daniel Braun, Sungwook Yang, Joseph N Martel, Cameron N Riviere, Brian C Becker
BACKGROUND: Fast and accurate mapping and localization of the retinal vasculature is critical to increasing the effectiveness and clinical utility of robot-assisted intraocular microsurgery such as laser photocoagulation and retinal vessel cannulation. METHODS: The proposed EyeSLAM algorithm delivers 30 Hz real-time simultaneous localization and mapping of the human retina and vasculature during intraocular surgery, combining fast vessel detection with 2D scan-matching techniques to build and localize a probabilistic map of the vasculature...
July 18, 2017: International Journal of Medical Robotics + Computer Assisted Surgery: MRCAS
https://www.readbyqxmd.com/read/28718208/quantification-of-nasal-airflow-resistance-in-english-bulldogs-using-computed-tomography-and-computational-fluid-dynamics
#9
Eric T Hostnik, Brian A Scansen, Rachel Zielinski, Samir N Ghadiali
Stenotic nares, edematous intranasal turbinates, mucosal swelling, and an elongated, thickened soft palate are common sources of airflow resistance for dogs with brachycephalic airway syndrome. Surgery has focused on enlarging the nasal apertures and reducing tissue of the soft palate. However, objective measures of surgical efficacy are lacking. Twenty-one English bulldogs without previous surgery were recruited for this prospective, pilot study. Computed tomography was performed using conscious sedation and without endotracheal intubation using a 128 multidetector computed tomography scanner...
July 17, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28717259/a-computerized-tutor-prototype-for-prostate-cryotherapy-key-building-blocks-and-system-evaluation
#10
Yoed Rabin, Kenji Shimada, Purva Joshi, Anjali Sehrawat, Robert Keelan, Dona M Wilfong, James T McCormick
This paper focuses on the evaluation of a prototype for a computer-based tutoring system for prostate cryosurgery, while reviewing its key building blocks and their benchmark performance. The tutoring system lists geometrical constraints of cryoprobe placement, displays a rendered shape of the prostate, simulates cryoprobe insertion, enables distance measurements, simulates the corresponding thermal history, and evaluates the mismatch between the target region shape and a pre-selected planning isotherm. The quality of trainee planning is measured in comparison with a computer-generated plan, created for each case study by a previously developed planning algorithm, known as bubble-packing...
January 28, 2017: Proceedings of SPIE
https://www.readbyqxmd.com/read/28716384/a-review-of-empathy-its-importance-and-its-teaching-in-surgical-training
#11
Jing L Han, Theodore N Pappas
BACKGROUND: There has been much discussion in the medical literature about the importance of empathy and physician communication style in medical practice. Empathy has been shown to have a very real positive effect on patient outcomes. Most of the existing literature speaks to its role in medical education, with relatively little empiric study about empathy in the surgical setting. OBJECTIVE: Review of empathy and its importance as it pertains to the surgeon-patient relationship and improving patient outcomes, and the need for increased education in empathy during surgical training...
July 14, 2017: Journal of Surgical Education
https://www.readbyqxmd.com/read/28716368/surgeons-and-surgical-trainees-acute-stress-in-real-operations-or-simulation-a-systematic-review
#12
REVIEW
Konstantinos Georgiou, Andreas Larentzakis, Athanasios G Papavassiliou
BACKGROUND AND PURPOSE: Acute stress in surgery is ubiquitous and has an immediate impact on surgical performance and patient safety. Surgeons react with several coping strategies; however, they recognise the necessity of formal stress management training. Thus, stress assessment is a direct need. Surgical simulation is a validated standardised training milieu designed to replicate real-life situations. It replicates stress, prevents biases, and provides objective metrics. The complexity of stress mechanisms makes stress measurement difficult to quantify and interpret...
July 14, 2017: Surgeon: Journal of the Royal Colleges of Surgeons of Edinburgh and Ireland
https://www.readbyqxmd.com/read/28716337/physical-models-and-virtual-reality-simulators-in-otolaryngology
#13
REVIEW
Luv Javia, Maya G Sardesai
The increasing role of simulation in the medical education of future otolaryngologists has followed suit with other surgical disciplines. Simulators make it possible for the resident to explore and learn in a safe and less stressful environment. The various subspecialties in otolaryngology use physical simulators and virtual-reality simulators. Although physical simulators allow the operator to make direct contact with its components, virtual-reality simulators allow the operator to interact with an environment that is computer generated...
July 14, 2017: Otolaryngologic Clinics of North America
https://www.readbyqxmd.com/read/28715385/a-genetically-engineered-mouse-model-of-sporadic-colorectal-cancer
#14
Alexander M Betzler, Susan Kochall, Linda Blickensdörfer, Sebastian A Garcia, May-Linn Thepkaysone, Lahiri K Nanduri, Michael H Muders, Jürgen Weitz, Christoph Reissfelder, Sebastian Schölch
Despite the advantages of easy applicability and cost-effectiveness, colorectal cancer mouse models based on tumor cell injection have severe limitations and do not accurately simulate tumor biology and tumor cell dissemination. Genetically engineered mouse models have been introduced to overcome these limitations; however, such models are technically demanding, especially in large organs such as the colon in which only a single tumor is desired. As a result, an immunocompetent, genetically engineered mouse model of colorectal cancer was developed which develops highly uniform tumors and can be used for tumor biology studies as well as therapeutic trials...
July 6, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28713738/three-dimensional-planning-and-reconstruction-of-the-mandible-in-children-with-craniofacial-microsomia-type-iii-using-costochondral-grafts
#15
Omri Emodi, Yair Israel, Michal Even Almos, Dror Aizenbud, John A Van Aalst, Adi Rachmiel
BACKGROUND: In craniofacial microsomia (CFM) Type III patients, autogenous costochondral grafts (CCG) are conventionally used for the reconstruction of the ramus and condyle. The aim of this study was to describe the use of CCG in children with CFM in terms of outcomes, growth patterns, and complications. MATERIALS AND METHODS: This is a retrospective study of nine, aged 4-12 years, patients with CFM Type III, who underwent reconstruction of the mandibular ramus condyle unit by CCG...
January 2017: Annals of Maxillofacial Surgery
https://www.readbyqxmd.com/read/28712950/predictors-of-laparoscopic-simulation-performance-among-practicing-obstetrician-gynecologists
#16
Shyama Mathews, Michael Brodman, Debra D'Angelo, Scott Chudnoff, Peter Mcgovern, Tamara Kolev, Giti Bensinger, Santosh Mudiraj, Andreea Nemes, David Feldman, Patricia Kischak, Charles Ascher-Walsh
BACKGROUND: To determine if parameters of performance for validated laparoscopic virtual simulation tasks correlate with surgical volume and characteristics of practicing obstetricians and gynecologists. STUDY DESIGN: All gynecologists with laparoscopic privileges (n= 347) from five academic medical centers in New York City were required to complete a laparoscopic surgery simulation assessment. The physicians took a pre-simulation survey gathering physician self-reported characteristics and then performed 3 basic skills tasks (enforced peg transfer (PT), lifting & grasping (LG), and cutting (CT)) on the Surgical Science LapSim(®)virtual reality laparoscopic simulator...
July 13, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28712902/design-based-comparison-of-spine-surgery-simulators-optimizing-educational-features-of-surgical-simulators
#17
Won Hyung A Ryu, Ahmed E Mostafa, Navjit Dharampal, Ehud Sharlin, Gail Kopp, W Bradley Jacobs, R John Hurlbert, Sonny Chan, Garnette R Sutherland
BACKGROUND: Simulation-based education has made its entry into surgical residency training, particularly as an adjunct to hands-on clinical experience. However, one of the ongoing challenges to wide adoption is the capacity of simulators to incorporate educational features required for effective learning. The aim of this study was to identify strengths and limitations of spine simulators to characterize design elements that are essential in enhancing resident education. METHODS: We performed a mixed qualitative and quantitative cohort study with focused survey and interviews of stakeholders in spine surgery pertaining to their experiences on three spine simulators...
July 13, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28712686/using-touch-surgery-to-improve-surgical-education-in-low-and-middle-income-settings-a-randomized-control-trial
#18
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/28711647/surgical-training-improves-performance-in-minimally-invasive-left-ventricular-assist-device-implantation-without-cardiopulmonary-bypass
#19
Lu-Feng Zhang, Hai-Bo Feng, Zhi-Guo Yu, Shi Jing, Feng Wan
OBJECTIVE: We introduced a live animal model for training of minimally invasive implantation of a continuous-flow left ventricular assist device (CF-LVAD) without cardiopulmonary bypass for operator's performance improvement. DESIGN: After watching a videotape of LVAD implantation on the beating heart through the cardiac apex, the surgical team performed implantation of LVADs into 5 pigs during 3 training sessions in a time series. The procedure success rate, operating time, and technical and global performances by self-evaluation and senior evaluation were compared among the sessions...
July 12, 2017: Journal of Surgical Education
https://www.readbyqxmd.com/read/28709790/corrective-osteotomy-for-malunited-diaphyseal-forearm-fractures-using-preoperative-3-dimensional-planning-and-patient-specific-surgical-guides-and-implants
#20
Ann-Maria Byrne, Bianca Impelmans, Veronique Bertrand, Annemieke Van Haver, Frederik Verstreken
PURPOSE: Three-dimensional planning based on computed tomography images of the malunited and the mirrored contralateral forearm allows preoperative simulations of corrective osteotomies, the fabrication of patient-specific osteotomy guides, and custom-made 3-dimensional printed titanium plates. This study aims to assess the precision and clinical outcome of this technique. METHODS: This was a prospective pilot study with 5 consecutive patients. The mean age at initial injury was 11 years (range, 4-16 years), and the mean interval from the time of injury to the time of corrective surgery was 32 months (range, 7-107 months)...
July 11, 2017: Journal of Hand Surgery
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