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Virtual surgical planning

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https://www.readbyqxmd.com/read/28526211/the-orbit-first-a-novel-surgical-treatment-protocol-for-secondary-orbitozygomatic-reconstruction
#1
Ruud Schreurs, Leander Dubois, Alfred G Becking, Thomas J J Maal
A novel surgical treatment sequence for secondary orbitozygomatic complex (OZC) reconstruction is described. Orbital reconstruction is performed before OZC repositioning. A surgical plan is made: the affected OZC is virtually osteotomized and aligned with a mirrored model of the unaffected OZC. A patient-specific implant (PSI) is designed for orbital reconstruction. Screw holes from the primary reconstruction are used for fixation. Primary screw hole positions at the repositioned OZC are embedded in the design, to guide OZC repositioning...
April 20, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28520540/virtual-surgery-for-conduit-reconstruction-of-the-right-ventricular-outflow-tract
#2
Chin Siang Ong, Yue-Hin Loke, Justin Opfermann, Laura Olivieri, Luca Vricella, Axel Krieger, Narutoshi Hibino
PURPOSE: Virtual surgery involves the planning and simulation of surgical reconstruction using three-dimensional (3D) modeling based upon individual patient data, augmented by simulation of planned surgical alterations including implantation of devices or grafts. Here we describe a case in which virtual cardiac surgery aided us in determining the optimal conduit size to use for the reconstruction of the right ventricular outflow tract. DESCRIPTION: The patient is a young adolescent male with a history of tetralogy of Fallot with pulmonary atresia, requiring right ventricle-to-pulmonary artery (RV-PA) conduit replacement...
May 2017: World Journal for Pediatric & Congenital Heart Surgery
https://www.readbyqxmd.com/read/28504987/secondary-reconstruction-of-maxillofacial-trauma
#3
Jaime Castro-Núñez, Joseph E Van Sickels
PURPOSE OF REVIEW: Craniomaxillofacial trauma is one of the most complex clinical conditions in contemporary maxillofacial surgery. Vital structures and possible functional and esthetic sequelae are important considerations following this type of trauma and intervention. Despite the best efforts of the primary surgery, there are a group of patients that will have poor outcomes requiring secondary reconstruction to restore form and function. The purpose of this study is to review current concepts on secondary reconstruction to the maxillofacial complex...
May 12, 2017: Current Opinion in Otolaryngology & Head and Neck Surgery
https://www.readbyqxmd.com/read/28499302/-virtual-planning-of-prosthetic-treatment-of-the-orbit
#4
Johannes A Veit, Julia Thierauf, Kornelius Egner, Severin Wiggenhauser, Daniel Friedrich, Jens Greve, Patrick J Schuler, Thomas K Hoffmann, Alexander Schramm
Optimal positioning of bone-anchored implants in the treatment of patients with orbital prosthesis is challenging. The definition of implant axis as well as the positioning of the implants is important to prevent failures in prosthetic rehabilitation in these patients. We performed virtual planning of enossal implants at a base of a standard fan beam CT scan using the software CoDiagnostiX™ (DentalWings, Montréal, Canada). By 3D-printing a surgical guide for drilling and implant insertion was manufactured (Med-610™, Stratasys, Rehovot, Israel)...
May 12, 2017: Laryngo- Rhino- Otologie
https://www.readbyqxmd.com/read/28494998/a-novel-method-for-planning-liver-resections-using-deformable-b%C3%A3-zier-surfaces-and-distance-maps
#5
Rafael Palomar, Faouzi A Cheikh, Bjørn Edwin, Åsmund Fretland, Azeddine Beghdadi, Ole J Elle
BACKGROUND AND OBJECTIVE: For more than a decade, computer-assisted surgical systems have been helping surgeons to plan liver resections. The most widespread strategies to plan liver resections are: drawing traces in individual 2D slices, and using a 3D deformable plane. In this work, we propose a novel method which requires low level of user interaction while keeping high flexibility to specify resections. METHODS: Our method is based on the use of Bézier surfaces, which can be deformed using a grid of control points, and distance maps as a base to compute and visualize resection margins (indicators of safety) in real-time...
June 2017: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/28494641/establishment-and-evaluation-of-patient-specific-virtual-ureteroscopy-in-assisting-flexible-ureteroscopy-for-urolithiasis
#6
Yi Zhang, Cheng-Fan Yu, Jun-Hui Zhang, Lu-Dong Qiao, Wei Yan, Cai-Peng Qin
OBJECTIVES: To establish virtual ureteroscopy (VU) through computed tomography urography (CTU) data from patients with upper urinary tract (UUT) stones indicated for flexible ureteroscopy (fURS) and to validate its effectiveness. METHODS: Patient-specific VU generation was accomplished through incorporating CTU data into specialized software (Crusher) developed on the open access Visualization Tools Kit (VTK). These were then presented to fURS experts and novice urologists for evaluation and comparison using modified Likert-type questionnaire of 10-point rating scales (1 = not at all useful/not at all realistic/poor, 10 = very useful/very realistic/ excellent)...
May 1, 2017: Surgical Innovation
https://www.readbyqxmd.com/read/28483229/use-of-three-dimensional-cad-cam-assisted-virtual-surgical-simulation-and-planning-in-the-pediatric-craniofacial-population
#7
Rachel Gray, Alexander Gougoutas, Vinh Nguyen, Jesse Taylor, Nicholas Bastidas
OBJECTIVE: Virtual Surgical Planning (VSP) and computer-aided design/computer-aided manufacturing (CAD/CAM) have recently helped improve efficiency and accuracy in many different craniofacial surgeries. Research has mainly focused on the use in the adult population with the exception of the use for mandibular distractions and cranial vault remodeling in the pediatric population. This study aims to elucidate the role of VSP and CAD/CAM in complex pediatric craniofacial cases by exploring its use in the correction of midface hypoplasia, orbital dystopia, mandibular reconstruction, and posterior cranial vault expansion...
June 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28482174/virtual-surgical-planning-for-inferior-alveolar-nerve-reconstruction
#8
Michael Miloro, Michael R Markiewicz
PURPOSE: The purpose of this study was to assess the outcomes after preoperative virtual surgical planning (VSP) for inferior alveolar nerve (IAN) reconstruction in ablative mandibular surgery. MATERIALS AND METHODS: We performed a retrospective evaluation of consecutive surgical cases using standard VSP for hard tissue resection and reconstructive surgery in addition to IAN VSP performed simultaneously during surgery. Cases were assessed regarding the planning time, additional costs involved, surgeon's subjective impression of the process, accuracy of the prediction during surgery, and operative time during surgery compared with cases performed without VSP...
April 12, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28468161/novel-treatment-planning-of-hemimandibular-hyperplasia-by-the-use-of-three-dimensional-computer-aided-design-and-computer-aided-manufacturing-technologies
#9
Muhanad M Hatamleh, Elizabeth Yeung, Jonas Osher, Chrisopher Huppa
RATIONALE AND AIM: Hemimandibular hyperplasia is characterized by an obvious overgrowth in the size of the mandible on one side, which can extend up to the midline causing facial asymmetry. Surgical resection of the overgrowth depends heavily on the skill and experience of the surgeon. This report describes a novel methodology of applying three-dimensional computer-aided-design and computer-aided-manufacturing principles in improving the outcome of surgery in 2 mandibular hyperplasia patients...
May 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28456427/-how-to-make-your-own-custom-cutting-guides-for-both-mandibular-and-fibular-stair-step-osteotomies
#10
K Rem, R Bosc, H De Kermadec, B Hersant, J-P Meningaud
INTRODUCTION: Using tailored cutting guides for osteocutaneous free fibula flap in complex mandibular reconstruction after cancer resection surgery constitutes a substantial improvement. Autonomously conceiving and manufacturing the cutting guides within a plastic surgery department with computer-aided design (CAD) and three-dimensional (3D) printing allows planning more complex osteotomies, such as stair-step osteotomies, in order to achieve more stable internal fixations. METHODS: For the past three years, we have been producing by ourselves patient-tailored cutting guides using CAD and 3D printing...
April 26, 2017: Annales de Chirurgie Plastique et Esthétique
https://www.readbyqxmd.com/read/28453004/implant-utilization-and-time-to-prosthetic-rehabilitation-in-conventional-and-advanced-fibular-free-flap-reconstruction-of-the-maxilla-and-mandible
#11
Richelle Chuka, Wael Abdullah, Jana Rieger, Suresh Nayar, Hadi Seikaly, Martin Osswald, Johan Wolfaardt
PURPOSE: Precisely designed jaw reconstruction rehabilitation (JRR) is important to the integrity of the jaw structure and oral functions. Advanced three-dimensional (3D) digital surgical design and simulation (SDS) techniques have the potential to reduce time to reconstructive and dental treatment completion, thereby promoting early functional oral rehabilitation. This study investigated the use of SDS in JRR procedures. MATERIALS AND METHODS: A retrospective chart review was conducted on adult head and neck tumor (HNT) participants who completed JRR treatment with a fibular free flap (FFF) reconstruction...
May 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/28432489/design-development-and-clinical-validation-of-computer-aided-surgical-simulation-system-for-streamlined-orthognathic-surgical-planning
#12
REVIEW
Peng Yuan, Huaming Mai, Jianfu Li, Dennis Chun-Yu Ho, Yingying Lai, Siting Liu, Daeseung Kim, Zixiang Xiong, David M Alfi, John F Teichgraeber, Jaime Gateno, James J Xia
PURPOSE: There are many proven problems associated with traditional surgical planning methods for orthognathic surgery. To address these problems, we developed a computer-aided surgical simulation (CASS) system, the AnatomicAligner, to plan orthognathic surgery following our streamlined clinical protocol. METHODS: The system includes six modules: image segmentation and three-dimensional (3D) reconstruction, registration and reorientation of models to neutral head posture, 3D cephalometric analysis, virtual osteotomy, surgical simulation, and surgical splint generation...
April 21, 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/28400556/precise-treatment-of-aortic-aneurysm-by-three-dimensional-printing-and-simulation-before-endovascular-intervention
#13
Ding Yuan, Han Luo, Hongliu Yang, Bin Huang, Jingqiang Zhu, Jichun Zhao
In this study, three-dimensional printing (3Dp) models and simulation surgeries (SSs) were applied in two challenging aortic cases. The first was an abdominal aortic aneurysm with a complex neck, and the second was a thoracic aortic dissection aneurysm (TADA) with an angled arch. In order to avoid unpredictable obstacles and difficulties, we made optimal surgical plans by using 3D models and virtual simulations. Based on preoperative evaluation system, the surgical plans seemed more reasonable and time-saving...
April 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28392819/computer-based-technologies-in-dentistry-types-and-applications
#14
REVIEW
Raja'a M Albuha Al-Mussawi, Farzaneh Farid
During dental education, dental students learn how to examine patients, make diagnosis, plan treatment and perform dental procedures perfectly and efficiently. However, progresses in computer-based technologies including virtual reality (VR) simulators, augmented reality (AR) and computer aided design/computer aided manufacturing (CAD/CAM) systems have resulted in new modalities for instruction and practice of dentistry. Virtual reality dental simulators enable repeated, objective and assessable practice in various controlled situations...
June 2016: Journal of Dentistry of Tehran University of Medical Sciences
https://www.readbyqxmd.com/read/28377356/-application-of-3d-printing-and-computer-assisted-surgical-simulation-in-preoperative-planning-for-acetabular-fracture
#15
Xin Liu, Can-Jun Zeng, Jian-Sen Lu, Xu-Chen Lin, Hua-Jun Huang, Xin-Yu Tan, Dao-Zhang Cai
OBJECTIVE: To evaluate the feasibility and effectiveness of using 3D printing and computer-assisted surgical simulation in preoperative planning for acetabular fractures. METHODS: A retrospective analysis was performed in 53 patients with pelvic fracture, who underwent surgical treatment between September, 2013 and December, 2015 with complete follow-up data. Among them, 19 patients were treated with CT three-dimensional reconstruction, computer-assisted virtual reset internal fixation, 3D model printing, and personalized surgery simulation before surgery (3D group), and 34 patients underwent routine preoperative examination (conventional group)...
March 20, 2017: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/28371367/is-there-inter-procedural-transfer-of-skills-in-intraocular-surgery-a-randomized-controlled-trial
#16
Ann Sofia Skou Thomsen, Jens Folke Kiilgaard, Morten la Cour, Ryan Brydges, Lars Konge
PURPOSE: To investigate how experience in simulated cataract surgery impacts and transfers to the learning curves for novices in vitreoretinal surgery. METHODS: Twelve ophthalmology residents without previous experience in intraocular surgery were randomized to (1) intensive training in cataract surgery on a virtual-reality simulator until passing a test with predefined validity evidence (cataract trainees) or to (2) no cataract surgery training (novices). Possible skill transfer was assessed using a test consisting of all 11 vitreoretinal modules on the EyeSi virtual-reality simulator...
March 30, 2017: Acta Ophthalmologica
https://www.readbyqxmd.com/read/28363503/the-impact-of-the-fabrication-method-on-the-three-dimensional-accuracy-of-an-implant-surgery-template
#17
Ragai-Edward Matta, Bastian Bergauer, Werner Adler, Manfred Wichmann, Hans-Joachim Nickenig
PURPOSE: The use of a surgical template is a well-established method in advanced implantology. In addition to conventional fabrication, computer-aided design and computer-aided manufacturing (CAD/CAM) work-flow provides an opportunity to engineer implant drilling templates via a three-dimensional printer. In order to transfer the virtual planning to the oral situation, a highly accurate surgical guide is needed. The aim of this study was to evaluate the impact of the fabrication method on the three-dimensional accuracy...
February 20, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28347627/simulation-guided-navigation-for-vector-control-in-pediatric-mandibular-distraction-osteogenesis
#18
Giovanni Badiali, Fabrizio Cutolo, Andrea Roncari, Claudio Marchetti, Alberto Bianchi
AIM: Navigation technology has given surgeons the capacity to know precisely where their instruments are during surgery, and simulation-guided navigation is a surgical method which is based on the use of navigation technology linked to 3D virtual surgery simulation. The aim of the present study was to evaluate the absolute accuracy of simulation-guided navigation as an aid to reproduce the planned position of the distraction device vector in pediatric mandibular distraction osteogenesis...
February 14, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28343411/three-dimensional-liver-surgery-simulation-computer-assisted-surgical-planning-with-three-dimensional-simulation-software-and-three-dimensional-printing
#19
Yukio Oshiro, Nobuhiro Ohkohchi
To perform accurate hepatectomy without injury, it is necessary to understand the anatomical relationship among the branches of Glisson's sheath, hepatic veins, and tumor. In Japan, three-dimensional (3D) preoperative simulation for liver surgery is becoming increasingly common, and liver 3D modeling and 3D hepatectomy simulation by 3D analysis software for liver surgery have been covered by universal healthcare insurance since 2012. Herein, we review the history of virtual hepatectomy using computer-assisted surgery (CAS) and our research to date, and we discuss the future prospects of CAS...
April 25, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28340666/innovations-and-future-directions-in-head-and-neck-microsurgical-reconstruction
#20
REVIEW
Marissa Suchyta, Samir Mardini
Head and neck reconstructive microsurgery is constantly innovating because of a combination of multidisciplinary advances. This article examines recent innovations that have affected the field as well as presenting research leading to future advancement. Innovations include the use of virtual surgical planning and three-dimensional printing in craniofacial reconstruction, advances in intraoperative navigation and imaging, as well as postoperative monitoring, development of minimally invasive reconstructive microsurgery techniques, integration of regenerative medicine and stem cell biology with reconstruction, and the dramatic advancement of face transplant...
April 2017: Clinics in Plastic Surgery
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