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Virtual surgical planning

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https://www.readbyqxmd.com/read/28063782/acceptable-clinical-outcomes-and-recommended-reconstructive-strategies-for-secondary-maxillary-reconstruction-with-vascularized-fibula-osteomyocutaneous-flap-a-retrospective-analysis
#1
Yi Shen, Jun Li, Andrew Ow, Liang Wang, Ming-Ming Lv, Jian Sun
BACKGROUND: We conducted a retrospective analysis of the clinical outcomes and evaluated the reconstructive strategies in patients who underwent secondary maxillary reconstruction with a vascularized fibula osteomyocutaneous flap (VFOF). METHODS: From May of 2001 to June of 2014, 34 patients who underwent secondary maxillary reconstruction with VFOF, with or without titanium mesh, were reviewed. The patients were divided into two groups of maxillary reconstruction, according to different planning and treatment strategies...
December 14, 2016: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/28063468/computational-fluid-dynamics-and-aortic-thrombus-formation-following-thoracic-endovascular-aortic-repair
#2
Foeke J H Nauta, Kevin D Lau, Christopher J Arthurs, Kim A Eagle, David M Williams, Santi Trimarchi, Himanshu J Patel, Carlos A Figueroa
BACKGROUND: We present the possible utility of computational fluid dynamics in the assessment of thrombus formation and virtual surgical planning illustrated in a patient with aortic thrombus in a kinked ascending aortic graft following thoracic endovascular aortic repair. METHODS: A patient-specific three-dimensional model was built from computed tomography. Additionally, we modeled 3 virtual aortic interventions to assess their effect on thrombosis potential: (1) open surgical repair, (2) conformable endografting, and (3) single-branched endografting...
January 4, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28060095/virtual-surgery-planning-and-three-dimensional-printing-template-to-customize-bone-graft-toward-implant-insertion
#3
Nathalie Pham Dang, Agathe Lafarge, Arnaud Depeyre, Laurent Devoize, Isabelle Barthélémy
Premaxillary tooth loss and bone deficiency or atrophy often occur in facial trauma. Onlay bone graft and implants have so far been the best means of restoring function and esthetic appearance. Void space between the graft and the jaw bone, over projection and mucosal trauma can cause mucosal dehiscence, bone exposure, or resorption and can compromise implant survival. Virtual surgical planning using 3-dimensional printing technology has improved the efficiency of craniofacial surgery. The drawbacks of this technology are its cost and time-consuming preparation...
January 5, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28056140/benefits-and-limitations-of-entry-level-3-dimensional-printing-of-maxillofacial-skeletal-models
#4
Alex T Legocki, Andrew Duffy-Peter, Andrew R Scott
Importance: A protocol for creating exceptionally low-cost 3-dimensional (3-D) maxillofacial skeletal models does not require proficiency with computer software or intensive labor. Small and less affluent centers can produce models with little loss in accuracy and clinical utility. Objectives: To highlight the feasibility and methods of introducing in-house, entry-level additive manufacturing (3-D printing) technology to otolaryngologic craniofacial reconstruction and to describe its clinical applications and limitations, including a comparison with available vendor models...
January 5, 2017: JAMA Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/28045634/an-accurate-method-of-designing-and-performing-individual-specific-genioglossus-advancement
#5
Stanley Yung-Chuan Liu, Leh-Kiong Huon, Soroush Zaghi, Robert Riley, Carlos Torre
There is too much individual patient variation in mandibular anatomy for any single described genioglossus advancement technique to be used consistently. Virtual surgical planning allows surgeons to design genioglossus osteotomy that captures the structures of interest. Intraoperative osteotomy and positioning guides mitigate known risks of the procedure while maximizing the reproducibility and efficacy of the procedure. In this report, we demonstrate the protocol step by step as it had been used on 10 patients, and we highlight 3 clinical scenarios that exemplify its utility...
January 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28034625/patient-specific-biodegradable-implant-in-pediatric-craniofacial-surgery
#6
H Essig, D Lindhorst, T Gander, P Schumann, D Könü, S Altermatt, M Rücker
Surgical correction of premature fusion of calvarial sutures involving the fronto-orbital region can be challenging due to the demanding three-dimensional (3D) anatomy. If fronto-orbital advancement (FOA) is necessary, surgery is typically performed using resorbable plates and screws that are bent manually intraoperatively. A new approach using individually manufactured resorbable implants (KLS Martin Group, Tuttlingen, Germany) is presented in the current paper. Preoperative CT scan data were processed in iPlan (ver...
November 30, 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28033077/virtual-3-dimensional-computed-tomographic-surgical-planning-for-severe-aortic-coarctation-aneurysm-in-the-setting-of-bicuspid-aortic-valve
#7
Jerold S Shinbane, Serena Ghanshani, Vaughn Starnes
No abstract text is available yet for this article.
January 2017: World Journal for Pediatric & Congenital Heart Surgery
https://www.readbyqxmd.com/read/28027185/use-of-virtual-surgical-planning-for-simultaneous-maxillofacial-osteotomies-and-custom-polyetheretherketone-implant-in-secondary-orbito-frontal-reconstruction-importance-of-restoring-orbital-volume
#8
Neel Patel, Beomjune Kim, Waleed Zaid
Correction of orbito-frontal defects involves a multitude of surgical challenges, and requires careful and detailed planning. In the trauma setting, one must be prepared to deal with injuries to adjacent structures and be able to incorporate their repair into the surgical plan to maximize the functional and esthetic reconstruction for the benefit of the patient. Victims who have sustained trauma of the cranial complex in combination with mid-facial trauma, particularly involving the orbit, present a difficult scenario, especially when future ocular prosthetic rehabilitation is a concern...
December 23, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28024773/comprehensive-treatment-approach-for-condylar-hyperplasia-and-mandibular-crowding-with-custom-lingual-braces-and-2-jaw-surgery
#9
Panagiotis G Kyteas, W Stuart McKenzie, Peter D Waite, Chung H Kau
We report on the successful treatment of a 32-year-old woman with condylar hyperplasia and severe mandibular crowding. In addition, her maxilla was canted to the right, her mandibular midline and chin point deviated to the left, and her maxillary canines were missing. The treatment plan included (1) aligning and leveling the teeth in both arches, (2) correcting overbite and overjet, (3) performing LeFort I osteotomy and bilateral split osteotomies, and (4) correcting the malocclusion postsurgically. The orthodontic treatment was performed with custom lingual braces and clear brackets, and virtual surgical planning techniques were used to plan the orthognathic surgery...
January 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28019190/evolution-of-design-considerations-in-complex-craniofacial-reconstruction-using-patient-specific-implants
#10
Sean Peel, Satyajeet Bhatia, Dominic Eggbeer, Daniel S Morris, Caroline Hayhurst
Previously published evidence has established major clinical benefits from using computer-aided design, computer-aided manufacturing, and additive manufacturing to produce patient-specific devices. These include cutting guides, drilling guides, positioning guides, and implants. However, custom devices produced using these methods are still not in routine use, particularly by the UK National Health Service. Oft-cited reasons for this slow uptake include the following: a higher up-front cost than conventionally fabricated devices, material-choice uncertainty, and a lack of long-term follow-up due to their relatively recent introduction...
December 1, 2016: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/28008430/surgical-and-prosthetic-dental-rehabilitation-through-a-complete-digital-workflow-a-case-report
#11
Panagiotis Tsirogiannis, Sascha Pieger, Stavros Pelekanos, Stefanos Kourtis
Several aspects of digital dentistry have recently been improved, including new materials, navigated implant placement, digital impression in combination with virtual articulation, and the computer-aided processes of designing and manufacturing of prosthetic restorations. In this case report, the prosthodontic treatment of a patient through a complete digital workflow is presented. A 39-year-old male patient presented for restoration of missing teeth in the posterior maxilla and mandible. In a single-tooth narrow gap (region 15), a Straumann NNC implant was placed by computer-assisted planning and navigation...
2016: International Journal of Computerized Dentistry
https://www.readbyqxmd.com/read/28005777/virtual-surgery-planning-in-orthomorphic-correction-of-mandibular-dysmorphology
#12
Harsh Pipalia, Praveen Ganesh, Samarth Shetty, Paul C Salins, Rohan Raut, Kiran Kumar Boyina
Three-dimensional virtual surgery programs are widely available for orthognathic surgery. The advent of imaging software programs has proved to be useful for diagnosis, treatment planning, outcome measurement, and three-dimensional surgical simulation. Complex maxillofacial malformations continue to present challenges in analysis and correction beyond modern technology. Orthomorphic correction for mandibular dysmorphology refers to basal bone movement without any change in dental component. The purpose of this paper is to present a virtual surgery planning for surgeons to perform the orthomorphic surgery with precision and quantification...
November 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28005744/a-new-procedure-assisted-by-digital-techniques-for-secondary-mandibular-reconstruction-with-free-fibula-flap
#13
Yao Yu, Wen-Bo Zhang, Xiao-Jing Liu, Chuan-Bin Guo, Guang-Yan Yu, Xin Peng
PURPOSE: To describe a new procedure assisted by digital techniques for secondary mandibular reconstruction with free fibula flap. METHODS: The 3-dimensional (3D) reconstruction images for vessels were used to demonstrate the vascular diameter and location, which help select the most suitable vein and artery for anastomosis. Maxillary and mandibular stone models of the patient were fabricated and a stable occlusal relationship was determined on an articulator. The 3D tooth model data were scanned using a 3D-optical measuring system, and the obtained stereolithographic (STL) data were imported to Geomagic software...
November 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28000275/current-state-of-the-art-of-computer-guided-implant-surgery
#14
REVIEW
Jan D'haese, Johan Ackhurst, Daniel Wismeijer, Hugo De Bruyn, Ali Tahmaseb
The invention of computerized axial tomography (now known as computerized tomography) and developments of interactive software to allow virtual planning, with the aim to guide the surgery precisely toward a specific target, has dramatically improved general, as well as oral, surgery. Virtual dental implant planning allows for a prosthetically driven approach, resulting in the best possible design of the prosthesis, better esthetics, optimized occlusion and loading. This approach has also changed the surgical paradigm of using extensive flaps to obtain a proper view of the surgical area because flapless implant surgery, with or without immediate loading, has become more predictable...
February 2017: Periodontology 2000
https://www.readbyqxmd.com/read/27993447/a-safe-and-accurate-method-to-perform-esthetic-mandibular-contouring-surgery-for-far-eastern-asians
#15
A M-C Hsieh, L-K Huon, H-R Jiang, S Y-C Liu
A tapered mandibular contour is popular with Far Eastern Asians. This study describes a safe and accurate method of using preoperative virtual surgical planning (VSP) and an intraoperative ostectomy guide to maximize the esthetic outcomes of mandibular symmetry and tapering while mitigating injury to the inferior alveolar nerve (IAN). Twelve subjects with chief complaints of a wide and square lower face underwent this protocol from January to June 2015. VSP was used to confirm symmetry and preserve the IAN while maximizing the surgeon's ability to taper the lower face via mandibular inferior border ostectomy...
December 16, 2016: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/27978913/-establishment-and-application-of-a-digital-workflow-in-the-treatment-of-condylar-osteochondroma-and-secondary-dentofacial-deformities-using-image-guided-endoscopic-navigation-combined-with-orthognathic-surgery
#16
M L Shen, J S Yu, H B Yu, H Sun, G F Shen, X D Wang
Objective: To establish a digital workflow in the treatment of mandibular condylar osteochondroma with secondary dentofacial deformities using navigation and endoscope combined with orthognathic surgery. Methods: Thirty-six patients with unilateral condylar osteochondroma were analyzed retrospectively. Preoperative planning and simulation were carried out on the digital three-dimansional (3D) model in all patients. With the aid of image-guided endoscopic navigation, osteochondroma resection and condylectomy were accurately performed...
December 9, 2016: Zhonghua Kou Qiang Yi Xue za Zhi, Zhonghua Kouqiang Yixue Zazhi, Chinese Journal of Stomatology
https://www.readbyqxmd.com/read/27977489/conjoined-twin-separation-integration-of-three-dimensional-modeling-for-optimization-of-surgical-planning
#17
Benjamin C Wood, Sarah R Sher, Benjamin J Mitchell, Albert K Oh, Gary F Rogers, Michael J Boyajian
Conjoined twinning is a rare anomaly, with an incidence of approximately 1 in 100,000 live births. There is a high perinatal mortality rate, but twins who survive pose reconstructive challenges that require meticulous preoperative planning. The authors describe the senior surgeon's career experience with conjoined twin separation, and the evolution of medical modeling and 3-dimensional imaging as a critical component in presurgical planning.The authors performed a retrospective review of all consecutive patients of conjoined twin separation at a single institution from January 2004 to December 2013...
December 12, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27977482/a-modified-approach-to-extensive-oromandibular-reconstruction-using-free-fibula-flaps
#18
Casian Monaco, John T Stranix, Z-Hye Lee, David Hirsch, Jamie P Levine, Pierre B Saadeh
In select patients with advanced disease resulting in large composite tissue defects, consideration is often given to multiple flap reconstruction. The authors propose an alternative option. Using virtual surgical planning the authors demonstrate how modest sacrifice in projection translates into a substantial decrease in the volume and surface area of soft tissue needed, in turn maximizing soft tissue coverage with a single fibula free flap. The authors used 3-dimensional virtual surgery to simulate angle-to-angle reconstructions using free fibula flaps...
December 12, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27974003/the-mental-health-parity-and-addiction-equity-act-mhpaea-evaluation-study-impact-on-quantitative-treatment-limits
#19
Amber Gayle Thalmayer, Sarah A Friedman, Francisca Azocar, Jessica M Harwood, Susan L Ettner
OBJECTIVE: The Mental Health Parity and Addiction Equity Act (MHPAEA) significantly changed regulations governing behavioral health benefits for large, commercially insured employers. Pre-MHPAEA, many plans covered only a specific number of behavioral health treatment days or visits; post-MHPAEA, such quantitative treatment limits (QTLs) were allowed only if they were "at parity" with medical-surgical limits. This study assessed MHPAEA's effect on the prevalence of behavioral health QTLs...
December 15, 2016: Psychiatric Services: a Journal of the American Psychiatric Association
https://www.readbyqxmd.com/read/27973962/computer-assisted-virtual-preoperative-planning-in-orthopedic-surgery-for-acetabular-fractures-based-on-actual-computed-tomography-data
#20
Guang-Ye Wang, Wen-Jun Huang, Qi Song, Yun-Tian Qin, Jin-Feng Liang
Acetabular fractures have always been very challenging for orthopedic surgeons; therefore, appropriate preoperative evaluation and planning are particularly important. This study aimed to explore the application methods and clinical value of preoperative computer simulation (PCS) in treating pelvic and acetabular fractures. Spiral computed tomography (CT) was performed on 13 patients with pelvic and acetabular fractures, and Digital Imaging and Communications in Medicine (DICOM) data were then input into Mimics software to reconstruct three-dimensional (3D) models of actual pelvic and acetabular fractures for preoperative simulative reduction and fixation, and to simulate each surgical procedure...
December 2016: Comput Assist Surg (Abingdon)
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