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Virtual surgical planning

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https://www.readbyqxmd.com/read/29140385/virtual-treatment-planning-for-implant-retained-nasal-prosthesis-a-clinical-report
#1
Muaiyed Mahmoud Buzayan, Norsiah Binti Yunu, Ha Kien Oon, Omar Tawfiq
Osseointegrated craniofacial implants have improved retention and patients' perceptions of implant-retained nasal prostheses; however, the determination of the available bone sites for implant placement post-rhinectomy is difficult. This case report describes the use of cone beam computed tomography scanning and computer-assisted virtual planning in conjunction with digital photographs for rehabilitation of a facial defect with an implant-retained silicon nasal prosthesis. Two implants were planned in the anatomical area with adequate bone volume to achieve favorable cosmetic outcomes and accessibility for hygiene maintenance...
November 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29127451/development-and-validation-of-3d-printed-virtual-models-for-robot-assisted-radical-prostatectomy-and-partial-nephrectomy-urologists-and-patients-perception
#2
Francesco Porpiglia, Riccardo Bertolo, Enrico Checcucci, Daniele Amparore, Riccardo Autorino, Prokar Dasgupta, Peter Wiklund, Ashutosh Tewari, Evangelos Liatsikos, Cristian Fiori
PURPOSE: To test the face and content validity of 3D virtual-rendered printed models used before robot-assisted prostate cancer and nephron-sparing surgery. METHODS: Patients who underwent live surgery during an international urological meeting organized in January 2017 were enrolled. Those with organ-confined prostate cancer underwent robot-assisted radical prostatectomy. Patients with a single renal tumor underwent minimally invasive nephron-sparing surgery. High-resolution (HR) imaging was obtained for all patients...
November 10, 2017: World Journal of Urology
https://www.readbyqxmd.com/read/29101640/computational-modeling-of-abdominal-hernia-laparoscopic-repair-with-a-surgical-mesh
#3
Silvia Todros, Paola Pachera, Nicola Baldan, Piero G Pavan, Silvia Pianigiani, Stefano Merigliano, Arturo N Natali
PURPOSE: Although new techniques and prostheses have been introduced in ventral hernia surgery, abdominal hernia repair still presents complications, such as recurrence, pain, and discomfort. Thus, this work implements a computational method aimed at evaluating biomechanical aspects of the abdominal hernia laparoscopic repair, which can support clinical research tailored to hernia surgery. METHODS: A virtual solid model of the abdominal wall is obtained from MRI scans of a healthy subject...
November 3, 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/29092758/navigation-guided-resection-of-maxillary-tumours-the-accuracy-of%C3%A2-computer-assisted-surgery-in-terms-of-control-of-resection-margins%C3%A2-a-feasibility-study
#4
Achille Tarsitano, Francesco Ricotta, Gennaro Baldino, Giovanni Badiali, Angelo Pizzigallo, Valerio Ramieri, Piero Cascone, Claudio Marchetti
INTRODUCTION: Surgical treatment of maxillary tumours is often highly complex. The three-dimensional anatomy of the mid-face renders both correct intraoperative orientation and adequate oncological safety difficult to obtain. Recently, computer-assisted techniques and intraoperative navigation have been applied to oncological surgery treating head and neck cancer. However, only a few studies have explored whether preoperative virtual resection planning and intraoperative control of resection margins allow assessment of the surgical margins of the tumour...
September 30, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/29078645/planning-video-assisted-thoracic-surgery-segmentectomy-using-three-dimensional-computed-tomography-angiography-and-bronchography-with-a-virtual-safety-margin
#5
Shingo Iwano
In segmentectomy using video-assisted thoracic surgery (VATS), surgeons view the operative field on a 2-dimensional video monitor. The lack of ability to palpate organs directly frequently leads to difficulties in evaluating anatomic relations. Three-dimensional computed tomography angiography and bronchography (3D-CTAB) using a virtual 3D safety margin enables thoracic surgeons to recognize the distance and positional relation between the primary tumor and intersegmental veins. It also helps with surgical planning, allowing the surgeon to secure an adequate safety margin around the primary tumor...
2017: J Vis Surg
https://www.readbyqxmd.com/read/29075157/open-anterior-skull-base-reconstruction-a-contemporary-review
#6
REVIEW
Daniel Kwon, Alfred Iloreta, Brett Miles, Jared Inman
Skull base extirpative and reconstructive surgery has undergone significant changes due to technological and operative advances. While endoscopic resection and reconstruction will continue to advance skull base surgery for the foreseeable future, traditional open surgical approaches and reconstructive techniques are still contemporarily employed as best practices in certain tumors or patient-specific anatomical cases. Skull base surgeons should strive to maintain a working knowledge and technical skill set to manage these challenging cases where endoscopic techniques have previously failed, are insufficient from anatomical constraints, or tumor biology with margin control supersedes the more minimally invasive approach...
November 2017: Seminars in Plastic Surgery
https://www.readbyqxmd.com/read/29074445/fibrous-condylar-dysplasia-resection-and-reconstruction-with-a-custom-made-tmj-prosthesis-using-virtual-surgical-planning
#7
M Fernández-Ferro, J Fernández-Sanromán, A Costas-López, A López-Betancourt
The main objective of this article is to describe the indications for custom-made alloplastic reconstruction of the temporomandibular joint (TMJ) using the new techniques of virtual surgical planning and computer-aided design/computer-aided manufacturing (CAD/CAM) technology through the study of a clinical case and an updated review of the literature. The patient was a 45-year-old male with a fast-growing condylar dysplasia that produced a progressive facial deformity with limited mandibular mobility, which required a radical resection...
October 23, 2017: Journal of Stomatology, Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29068896/updates-in-head-and-neck-reconstruction
#8
Rene D Largo, Patrick B Garvey
LEARNING OBJECTIVES: After reading this article, the participant should: 1. have a basic understanding of virtual planning, rapid prototype modeling, 3D printing, and computer-assisted design and manufacture, 2. understand the principles of combining virtual planning and vascular mapping, 3. understand principles of flap choice and design in preoperative planning of free osteocutaneous flaps in mandible and midface reconstruction, and 4. discuss advantages and disadvantages of computer-assisted design and manufacture in reconstruction of advanced oncologic mandible and midface defects...
October 13, 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/29066041/accuracy-of-virtual-surgical-planning-of-orthognathic-surgery-with-aid-of-cad-cam-fabricated-surgical-splint-a-novel-3d-analyzing-algorithm
#9
Shih-Jan Chin, Frank Wilde, Michael Neuhaus, Alexander Schramm, Nils-Claudius Gellrich, Majeed Rana
The benefit of computer-assisted planning in orthognathic surgery has been extensively documented over the last decade. This study aims to evaluate the accuracy of a virtual orthognathic surgical plan by a novel three dimensional (3D) analysis method. Ten patients who required orthognathic surgery were included in this study. A virtual surgical plan was achieved by the combination of a 3D skull model acquired from computed tomography (CT) and surface scanning of the upper and lower dental arch respectively and final occlusal position...
July 29, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/29049474/virtual-surgery-for-the-nasal-airway-a-preliminary-report-on-decision-support-and-technology-acceptance
#10
Derek L Vanhille, Guilherme J M Garcia, Onur Asan, Azadeh A T Borojeni, Dennis O Frank-Ito, Julia S Kimbell, Sachin S Pawar, John S Rhee
Importance: Nasal airway obstruction (NAO) is a common problem that affects patient quality of life. Surgical success for NAO correction is variable. Virtual surgery planning via computational fluid dynamics (CFD) has the potential to improve the success rates of NAO surgery. Objective: To elicit surgeon feedback of a virtual surgery planning tool for NAO and to determine if this tool affects surgeon decision making. Design, Setting, and Participants: For this cross-sectional study, 60-minute face-to-face interviews with board-certified otolaryngologists were conducted at a single academic otolaryngology department from September 16, 2016, through October 7, 2016...
October 12, 2017: JAMA Facial Plastic Surgery
https://www.readbyqxmd.com/read/29049196/three-dimensional-reduction-and-finite-element-analysis-improves-the-treatment-of-pelvic-malunion-reconstructive-surgery-a-case-report
#11
Sascha Kurz, Philipp Pieroh, Maximilian Lenk, Christoph Josten, Jörg Böhme
RATIONALE: Pelvic malunion is a rare complication and is technically challenging to correct owing to the complex three-dimensional (3D) geometry of the pelvic girdle. Hence, precise preoperative planning is required to ensure appropriate correction. Reconstructive surgery is generally a 2- or 3-stage procedure, with transiliac osteotomy serving as an alternative to address limb length discrepancy. PATIENT CONCERNS: A 38-year-old female patient with a Mears type IV pelvic malunion with previous failed reconstructive surgery was admitted to our department due to progressive immobilization, increasing pain especially at the posterior pelvic arch and a leg length discrepancy...
October 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29045973/-application-of-three-dimensional-reconstruction-of-the-enhanced-ct-with-iplan-cmf-software-in-head-and-neck-neoplasms
#12
Y Yu, W B Zhang, Y Wang, X J Liu, C B Guo, G Y Yu, X Peng
OBJECTIVE: Three-dimensional reconstruction of the enhanced CT is increasingly becoming a valuable tool in head and neck neoplasms. The aim of this study is to reconstruct three-dimensional imaging of tumor and its surrounding important anatomical structure using iPlan CMF software, and to investigate the application of three-dimensional tumor mapping technique for the diagnosis and treatment of the head and neck neoplasms. METHODS: In the study, 13 cases with head and neck tumors in Department of Oral and Maxilloficial Surgery, Peking University School and Hospital of Stomatology from June 2014 to June 2015 were studied using spiral CT scanning technology based on the same scanning condition...
October 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/29033148/medial-approach-for-minimally-invasive-harvesting-of-a-deep-circumflex-iliac-artery-flap-for-reconstruction-of-the-jaw-using-virtual-surgical-planning-and-cad-cam-technology
#13
A Modabber, N Ayoub, A Bock, S C Möhlhenrich, B Lethaus, A Ghassemi, D A Mitchell, F Hölzle
Donor site morbidity is the most common limitation of the deep circumflex iliac artery (DCIA) flap, so the purpose of this paper is to describe a new, minimally-invasive, approach to its harvest using virtual surgical planning and CAD/CAM technology to reduce functional and aesthetic morbidity at the donor site. Virtual surgical planning was based on preoperative computed tomographic data. A newly-designed surgical guide made using CAD/CAM technology was used to transfer the virtual surgical plan to the site of operation...
October 12, 2017: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/28991811/vertical-maxillary-measurements-using-a-virtual-external-reference-point-in-orthognathic-surgery-technical-innovation
#14
Sebastián Espinosa S
It is extremely important to achieve vertical position of the upper jaw in orthognathic surgery. A common method used is measuring distances at surgery using external reference points. Unfortunately, surgeons have been making mistakes when calculating the goal distance of our external reference systems. A possible explanation is that when the author measure the baseline and goal vertical distances, the author usually do not consider the variations produced by the triangulation effect generated due the horizontal or/and transverse movements of the maxilla...
November 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28987224/controversies-in-traditional-oral-and-maxillofacial-reconstruction
#15
REVIEW
John S Vorrasi, Antonia Kolokythas
Traditional reconstruction of the head and neck and significantly evolved over the last 20 to 30 years with advances in microvascular surgery, biologic materials such as bone morphogenic protein, and dental implant predictability. Earlier and more definitive reconstruction can now be achieved with combining therapies, allowing patients immediate restoration of function and improved cosmetics. Antiresorptive medications, such as Denosumab and bisphosphonates, have complicated bony reconstruction treatments with altered biology and less-predictable results...
November 2017: Oral and Maxillofacial Surgery Clinics of North America
https://www.readbyqxmd.com/read/28985669/establishment-of-next-generation-neurosurgery-research-and-training-laboratory-with-integrated-human-performance-monitoring
#16
Antonio Bernardo
Quality of neurosurgical care and patient outcomes are inextricably linked to surgical and technical proficiency and a thorough working knowledge of microsurgical anatomy. Neurosurgical laboratory-based cadaveric training is essential for the development and refinement of technical skills before their use on a living patient. Recent biotechnological advances including 3-dimensional (3D) microscopy and endoscopy, 3D printing, virtual reality, surgical simulation, surgical robotics, and advanced neuroimaging have proved to reduce the learning curve, improve conceptual understanding of complex anatomy, and enhance visuospatial skills in neurosurgical training...
October 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28973685/microsurgery-simulator-of-cerebral-aneurysm-clipping-with-interactive-cerebral-deformation-featuring-a-virtual-arachnoid
#17
Naoyuki Shono, Taichi Kin, Seiji Nomura, Satoru Miyawaki, Toki Saito, Hideaki Imai, Hirofumi Nakatomi, Hiroshi Oyama, Nobuhito Saito
BACKGROUND: A virtual reality simulator for aneurysmal clipping surgery is an attractive research target for neurosurgeons. Brain deformation is one of the most important functionalities necessary for an accurate clipping simulator and is vastly affected by the status of the supporting tissue, such as the arachnoid membrane. However, no virtual reality simulator implementing the supporting tissue of the brain has yet been developed. OBJECTIVE: To develop a virtual reality clipping simulator possessing interactive brain deforming capability closely dependent on arachnoid dissection and apply it to clinical cases...
August 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28965991/accuracy-of-computer-assisted-mandibular-reconstructions-using-patient-specific-implants-in-combination-with-cad-cam-fabricated-transfer-keys
#18
Frank Mascha, Karsten Winter, Sebastian Pietzka, Marcus Heufelder, Alexander Schramm, Frank Wilde
BACKGROUND: A new method in mandible reconstruction has recently been developed using patient-specific mandible reconstruction plates (PSMP) after preoperative computer planning using CAD/CAM procedures. To transfer the virtual planned position of the PSMP into the intraoperative situs resection margins and plate position is determined by using surgical guides made by CAD/CAM procedures as well (PSMP-method). METHODS: Mandibular reconstruction with the PSMP-method was performed on 18 patients...
September 5, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28950997/comparison-of-the-accuracy-of-maxillary-position-between-conventional-model-surgery-and-virtual-surgical-planning
#19
F G Ritto, A R M Schmitt, T Pimentel, J V Canellas, P J Medeiros
The aim of this study was to determine whether virtual surgical planning (VSP) is an accurate method for positioning the maxilla when compared to conventional articulator model surgery (CMS), through the superimposition of computed tomography (CT) images. This retrospective study included the records of 30 adult patients submitted to bimaxillary orthognathic surgery. Two groups were created according to the treatment planning performed: CMS and VSP. The treatment planning protocol was the same for all patients...
September 23, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28948516/version-correction-via-eccentric-reaming-compromises-remaining-bone-quality-in-b2-glenoids-a-computational-study
#20
Xiang Chen, Akhil S Reddy, Andreas Kontaxis, Daniel S Choi, Timothy Wright, David M Dines, Russell F Warren, Julien Berhouet, Lawrence V Gulotta
BACKGROUND: Version correction via eccentric reaming reduces clinically important retroversion in Walch type B2 glenoids (those with substantial glenoid retroversion and a second, sclerotic neoglenoid cavity) before total shoulder arthroplasty (TSA). Clinically, an increased risk of glenoid component loosening in B2 glenoids was hypothesized to be the result of compromised glenoid bone quality attributable to eccentric reaming. However, no established guidelines exist regarding how much version correction can be applied without compromising the quality of glenoid bone...
December 2017: Clinical Orthopaedics and related Research
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