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Virtual surgery

Niels Hammer, Stefan Klima
BACKGROUND: Computational models of the human pelvis have become highly useful tools to assess mechanisms of injury, diagnostics and treatment options. The purpose of this systematic literature review was to summarize existing pelvic computer models, to assess their comparability and the measures taken for experimental validation. METHODS: Research on virtual simulations of the posterior pelvis and sacroiliac joint available from the ISI Web of Knowledge, PubMed and Scopus databases available until January 2018 were included...
December 6, 2018: Clinical Biomechanics
Adrienn Dobai, Zsolt Markella, Tamás Vízkelety, József Barabás
We summarize up-to-date planning technics of orthognathic and reconstructive surgery operation which appeared with three-dimensional imaging, using literature data and some clinical examples. In many cases, orthognathic and reconstructive operations mean the only treatment of facial deformity caused by tumour, traumatic injury or congenital anomaly. In this field, radiology plays an important role not only in the diagnosis but also in the planning of the treatment. With the appearance of cone-beam computed tomography (CBCT), the previously used two-dimensional cephalometric analysis on lateral cephalogram was changed for three-dimensional cephalometric measurements...
September 2018: Orvosi Hetilap
John W Polley, John A Girotto, Matthew P Fahrenkopf, Megan L Dietze-Fiedler, Joshua P Kelley, Joseph C Taylor, Spiros A Lazarou, Neophytos C Demetriades
INTRODUCTION: Skeletal reconstruction in severe grades of hemifacial microsomia (HFM) continues to be challenging. Traditional techniques of autografts and osseous distraction for reconstruction of the glenoid fossa, condyle, and ramus can fall short of expectations and can create new problems. This intercontinental study analyzes the role of alloplastic skeletal rehabilitation in severe HFM. METHODS: Ten consecutive patients with Pruzansky grade III HFM were reconstructed between October 2014 and July 2017 at 2 craniofacial centers following the same protocol...
December 13, 2018: Cleft Palate-craniofacial Journal
Kimberly Luu, Amirreza Pakdel, Edward Wang, Eitan Prisman
BACKGROUND: 3-Dimensional (3D) printing can be applied to virtual planning and creation of surgical guides for mandibular reconstruction. Such systems are becoming increasingly prevalent in head and neck reconstruction. However, third party access to this technology is costly and removes the opportunity to design, create, and modify the bony reconstructions, as third party technology is a black box. This series is a pilot study to document the feasibility of an in-house software tool...
December 12, 2018: Journal of Otolaryngology—Head & Neck Surgery
Yin Liu, Hai-Bo Wang, Xiang Li, Jian-Yong Xiao, Ji-Xiang Wang, Kathleen H Reilly, Bo Sun, Jing Gao
BACKGROUND: Plaque composition and morphologic characteristics identified by virtual histology intravascular ultrasound (VH-IVUS) can determine plaques at increased risk of clinical events following percutaneous coronary intervention (PCI) among coronary artery disease (CAD) patients. However, there have been few studies to investigate the relationship between plaque composition of saphenous vein graft (SVG) by VH-IVUS and clinical outcomes in patients with saphenous vein graft disease (SVGD) undergoing PCI...
December 12, 2018: BMC Cardiovascular Disorders
Raphael M Byrne, Heather E Hoops, Daniel O Herzig, Sarah J Diamond, Kim C Lu, Karen J Brasel, V Liana Tsikitis
BACKGROUND: The Fundamentals of Endoscopic Surgery examination is required for all general surgery residents. The test modules are not available for practice before the examination; however, similar modules are commercially available. OBJECTIVE: This study aims to determine which modules are most valuable for resident training and preparation for the examination by evaluating which correlates best with experience level. DESIGN: This was a single-institution study...
November 28, 2018: Diseases of the Colon and Rectum
Bruno Della Mea Gasperin, Thamyres Zanirati, Leandro Totti Cavazzola
BACKGROUND: The increasingly intense usage of technology applied to videosurgery and the advent of robotic platforms accelerated the use of virtual models in training surgical skills. AIM: To evaluate the performance of a general surgery department's residents in a video-simulated laparoscopic cholecystectomy in order to understand whether training with virtual reality is sufficient to provide the skills that are normally acquired in hands-on experience at the operating room...
December 6, 2018: Arquivos Brasileiros de Cirurgia Digestiva: ABCD, Brazilian Archives of Digestive Surgery
Kagami Miyaji, Shohei Miyazaki, Keiichi Itatani, Norihiko Oka, Tadashi Kitamura, Tetsuya Horai
OBJECTIVES: A novel surgical strategy using haemodynamic analyses based on virtual operations with computational simulations has been introduced for complicated pulmonary stenosis. We evaluated the efficacy of this strategy. METHODS: Six patients were enrolled. Before surgery, the optimal pulmonary arteries were constructed based on computational fluid dynamics using 3-dimensional computed tomography. Energy loss (EL, mW) and wall shear stress (WSS, Pa) were calculated...
December 6, 2018: Interactive Cardiovascular and Thoracic Surgery
Min-Hee Ryu, David Kahng, Lee Seng Khoo, William Wei-Kai Lao
The orbicularis oculi muscle (OOM) is sometimes incorporated with the superficial musculoaponeurotic system (SMAS) flap to provide a stronger flap. While elevating the OOM flap, it is important to avoid injury to the orbicularis branches of the zygomatic nerve. When the orbicularis branches of the zygomatic nerve are identified during the OOM-SMAS flap elevation, a transverse OOM flap was created to preserve the nerve. Postoperative follow-up was 12 months. There was no functional impairment of the OOM in the follow-up period...
October 2018: Plastic and Reconstructive Surgery. Global Open
Hugo Gonçalo Guedes, Zêmia Maria Câmara Costa Ferreira, Layra Ribeiro de Sousa Leão, Edna Frasson Souza Montero, José Pinhata Otoch, Everson Luiz de Almeida Artifon
BACKGROUND: To evaluate the effectiveness of virtual reality simulator (VRS) training compared to box-trainer training (BT) for learning outcomes in minimally invasive surgery (MIS) techniques. MATERIALS AND METHODS: A systematic review of the literature was performed using CENTRAL, MEDLINE, EMBASE, Scopus, CINAHL, LILACS. The primary outcomes were time to perform MIS and performance score in MIS. After being selected, the articles were evaluated for methodological quality and risk of bias...
December 6, 2018: International Journal of Surgery
Yan-Ran Du, Chen-Li Ji, Yang Wu, Xin-Gang Gu
OBJECTIVE: To evaluate the diagnostic performance of a new method of combined ultrasound elastography (UE) and thyroid imaging-reporting and data system (TI-RADS) in the differential diagnosis of small thyroid nodules. METHODS: Ultrasonography(US), TI-RADS, Elasticity Imaging (EI), Virtual Touch Tissue Imaging (VTI) and Virtual Touch Tissue Quantification (VTQ) features of 142 thyroid nodules (maximum diameter ≤10 mm according to conventional ultrasound measurement) confirmed by surgery or FNA were retrospectively analyzed...
December 2018: European Journal of Radiology
Peter Maximilian Sparwasser, Dominik Schoeb, Arkadiusz Miernik, Hendrik Borgmann
INTRODUCTION:  Virtual reality (VR) is an artificially simulated environment permitting interaction. On the other hand, augmented reality (AR) is an enhanced version of reality created by the use of technology to overlay digital information on an image of something being viewed through a device. Both technologies have partially been implemented in clinical daily routine. Surgical applications of VR and AR are currently evaluated. Yet it is still unclear which possibilities these new and versatile applications offer for physicians...
December 2018: Aktuelle Urologie
Danilo Avola, Luigi Cinque, Gian Luca Foresti, Marco Raoul Marini
Strokes, surgeries, or degenerative diseases can impair motor abilities and balance. Long-term rehabilitation is often the only way to recover, as completely as possible, these lost skills. To be effective, this type of rehabilitation should follow three main rules. First, rehabilitation exercises should be able to keep patient's motivation high. Second, each exercise should be customizable depending on patient's needs. Third, patient's performance should be evaluated objectively, i.e., by measuring patient's movements with respect to an optimal reference model...
December 3, 2018: Journal of Biomedical Informatics
Katherine Young, Amar Gupta, Rafael Palacios
BACKGROUND: A shortage of pediatricians and long wait times in the hospitals render more efficient follow-up visits increasingly important. Virtual visits between physician and patient offer a solution to this problem. Increased awareness, improved technology, and efficient scheduling methods will contribute to the quality and adoption of telemedicine programs. INTRODUCTION: The aim of this study was to analyze the impact of pediatric telemedicine on wait times and visit durations, as compared with in-person visits...
December 5, 2018: Telemedicine Journal and E-health: the Official Journal of the American Telemedicine Association
Wissam N Raad, Adil Ayub, Chyun-Yin Huang, Landon Guntman, Sadiq S Rehmani, Faiz Y Bhora
OBJECTIVE: Robotic-assisted surgery is increasingly being used in thoracic surgery. Currently, the Integrated Thoracic Surgery Residency Program lacks a standardized curriculum or requirement for training residents in robotic-assisted thoracic surgery. In most circumstances, because of the lack of formal residency training in robotic surgery, hospitals are requiring additional training, mentorship, and formal proctoring of cases before granting credentials to perform robotic-assisted surgery...
December 3, 2018: Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery
Sara Condino, Giuseppe Turini, Paolo D Parchi, Rosanna M Viglialoro, Nicola Piolanti, Marco Gesi, Mauro Ferrari, Vincenzo Ferrari
Orthopaedic simulators are popular in innovative surgical training programs, where trainees gain procedural experience in a safe and controlled environment. Recent studies suggest that an ideal simulator should combine haptic, visual, and audio technology to create an immersive training environment. This article explores the potentialities of mixed-reality using the HoloLens to develop a hybrid training system for orthopaedic open surgery. Hip arthroplasty, one of the most common orthopaedic procedures, was chosen as a benchmark to evaluate the proposed system...
2018: Journal of Healthcare Engineering
Lucio Tommaso De Paolis, Valerio De Luca
Minimally invasive techniques, such as laparoscopy and radiofrequency ablation of tumors, bring important advantages in surgery: by minimizing incisions on the patient's body, they can reduce the hospitalization period and the risk of postoperative complications. Unfortunately, they come with drawbacks for surgeons, who have a restricted vision of the operation area through an indirect access and 2D images provided by a camera inserted in the body. Augmented reality provides an "X-ray vision" of the patient anatomy thanks to the visualization of the internal organs of the patient...
December 4, 2018: Medical & Biological Engineering & Computing
Vetrivel Muralidharan, Ganesh Swaminathan, Devakumar Devadhas, Baylis V Joseph
Background: Lumbar pedicle screw insertion involves a steep learning curve for novice spine surgeons and requires image guidance or navigation. Small volume centers may be handicapped by the lack of cost-effective user-friendly tools for preoperative planning, guidance, and decision making. Objective: We describe a patient-specific interactive software module, pedicle screw simulator (PSS), for virtual preoperative planning to determine the entry point and visualize the trajectories of pedicle screws...
November 2018: Neurology India
R Bryan Bell
This review highlights the contributions of American oral and maxillofacial surgeons to the field of orthognathic surgery. The present state of the art and science of orthognathic surgery is the harvest of yesterday's innovation and research. An improved understanding of the biological and surgical principles and the routine involvement of orthodontics have fueled widespread adoption of a coordinated approach to the treatment of dentofacial problems. Technologic advances in rigid internal fixation, virtual surgical planning with computer-aided manufacturing of occlusal splints and cutting guides, custom implants, and worldwide interest in the correction of dentofacial and craniofacial deformities have resulted in highly predictable, efficient, and safe treatment, which scarcely resembles the situation 70 years ago...
December 2018: Journal of Oral and Maxillofacial Surgery
Michel E van Genderen, J H Vlake
Innovative technologies, such as virtual reality (VR), augmented reality (AR) and mixed reality (MR) are no longer only interesting for a niche of gamers but are increasingly being applied within healthcare. Possible applications for VR in care vary from exposure therapy for PTSD and anxiety disorders to aiding in cognitive and physical rehabilitation. VR has also acquired an important role in medical education. AR/MR are used predominantly within surgery, for instance for perioperative projection of patient information, holographic images and scans...
November 26, 2018: Nederlands Tijdschrift Voor Geneeskunde
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