Three-Dimensional Digital Design for Osteotomy in the Treatment of Congenital Hemivertebra

2013 ◽  
Vol 804 ◽  
pp. 167-173
Author(s):  
Huan Wen Ding ◽  
Guang Wen Yu ◽  
Qiang Tu ◽  
Jian Jian Shen ◽  
Ying Jun Wang
Keyword(s):  
Computer Simulation ◽  
Internal Fixation ◽  
Pedicle Screw ◽  
Operative Time ◽  
Design Method ◽  
Three Dimensional ◽  
Digital Design ◽  
Computer Assisted ◽  
Computer Assisted Design ◽  
Computer Aided

To establish a new three-dimensional (3D) digital design method for osteotomy and assess its application value in the surgical treatment of hemivertebrae. Preoperative 3D digital designs for osteotomy of the hemivertebrae were performed, which included computer simulation of the osteotomy and the internal fixation process, and computer-assisted design (CAD) of the templates for osteotomy of the hemivertebrae, pedicle screw positioning, and internal fixation rods. Template-guided osteotomy of the hemivertebrae plus pedicle screw and rod internal fixation were accurately implemented. The preoperative use of this new computer-aided 3D digitized and paperless surgical design can improve the safety, accuracy, and operative time for osteotomy in the treatment of hemivertebrae.

Three-Dimensional Digital Design for Osteotomy in the Treatment of Congenital Hemivertebra

2013 ◽  
Vol 380-384 ◽  
pp. 1760-1764
Author(s):  
Huan Wen Ding ◽  
Guang Wen Yu ◽  
Qiang Tu ◽  
Jian Jian Shen ◽  
Ying Jun Wang
Keyword(s):  
Computer Simulation ◽  
Internal Fixation ◽  
Pedicle Screw ◽  
Operative Time ◽  
Design Method ◽  
Three Dimensional ◽  
Digital Design ◽  
Computer Assisted ◽  
Computer Assisted Design ◽  
Computer Aided

To establish a new three-dimensional (3D) digital design method for osteotomy and assess its application value in the surgical treatment of hemivertebrae. Preoperative 3D digital designs for osteotomy of the hemivertebrae were performed, which included computer simulation of the osteotomy and the internal fixation process, and computer-assisted design (CAD) of the templates for osteotomy of the hemivertebrae, pedicle screw positioning, and internal fixation rods. Template-guided osteotomy of the hemivertebrae plus pedicle screw and rod internal fixation were accurately implemented. The preoperative use of this new computer-aided 3D digitized and paperless surgical design can improve the safety, accuracy, and operative time for osteotomy in the treatment of hemivertebrae.

3D Measurement of Anatomic Parameters and Development of a Digital Design to Improve the Outcome of Lower-Extremity Surgery

2013 ◽  
Vol 787 ◽  
pp. 947-953
Author(s):  
Huan Wen Ding ◽  
Qiang Tu ◽  
Hong Wang ◽  
Hui Liang Liu ◽  
Jian Jian Shen ◽  
...  
Keyword(s):  
Lower Extremity ◽  
Three Dimensional ◽  
Deformity Correction ◽  
Digital Design ◽  
Osteotomy Site ◽  
Computer Assisted ◽  
Computed Tomographic ◽  
Computer Aided ◽  
Dimensional Reconstruction ◽  
Correction Surgery

Background: To overcome disadvantages of the older surgical model, we invented a new three-dimensional (3D) correction surgery design after studying computer-aided 3D model analysis. Methods: Three-dimensional reconstruction was carried out for computed tomographic (CT) scans of patients with normal bilateral lower extremities; an anatomical model was established; and the normal values of 3D anatomic parameters of the lower-extremity joints were measured with computer assistance. An osteotomy procedure was simulated using a computer, appropriate osteotomy site, and osteotomy angle, and an osteotomy method was selected. Computer-assisted design (CAD) was used to produce an individualized auxiliary osteotomy template for guiding the osteotomy and an auxiliary correction template for guiding correction surgery. Finally, we accurately performed surgery according to the preoperative design. Results: All surgeries were performed successfully and postoperative x-ray films showed satisfactory deformity correction. Conclusions: Computer-aided lower-extremity joint correction surgery is more accurate and convenient than conventional surgery.

3D Measurement of Anatomic Parameters and Development of a Digital Design to Improve the Outcome of Lower-Extremity Surgery

2013 ◽  
Vol 804 ◽  
pp. 174-179
Author(s):  
Huan Wen Ding ◽  
Guang Wen Yu ◽  
Qiang Tu ◽  
Jun Feng Jia ◽  
Jian Jian Shen ◽  
...  
Keyword(s):  
Lower Extremity ◽  
Three Dimensional ◽  
Deformity Correction ◽  
Digital Design ◽  
Osteotomy Site ◽  
Computer Assisted ◽  
Computed Tomographic ◽  
Computer Aided ◽  
Dimensional Reconstruction ◽  
Correction Surgery

To overcome disadvantages of the older surgical model, we invented a new three-dimensional (3D) correction surgery design after studying computer-aided 3D model analysis. Three-dimensional reconstruction was carried out for computed tomographic (CT) scans of patients with normal bilateral lower extremities; an anatomical model was established; and the normal values of 3D anatomic parameters of the lower-extremity joints were measured with computer assistance. An osteotomy procedure was simulated using a computer, appropriate osteotomy site, and osteotomy angle, and an osteotomy method was selected. Computer-assisted design (CAD) was used to produce an individualized auxiliary osteotomy template for guiding the osteotomy and an auxiliary correction template for guiding correction surgery. Finally, we accurately performed surgery according to the preoperative design. All surgeries were performed successfully and postoperative x-ray films showed satisfactory deformity correction. Computer-aided lower-extremity joint correction surgery is more accurate and convenient than conventional surgery.

Clinical Value of Computer-Assisted Taylor Three-dimensional External Fixation in the Treatment of Tibiofibular Fracture (Preprint)

2020 ◽  
Author(s):  
Hongfeng Sheng ◽  
Weixing Xu ◽  
Bin Xu ◽  
Hongpu Song ◽  
Di Lu ◽  
...  
Keyword(s):  
Retrospective Study ◽  
Internal Fixation ◽  
External Fixation ◽  
External Fixator ◽  
Theoretical Basis ◽  
New Technology ◽  
Three Dimensional ◽  
Computer Assisted ◽  
Clinical Value

UNSTRUCTURED The retrospective study of Taylor's three-dimensional external fixator for the treatment of tibiofibular fractures provides a theoretical basis for the application of this technology. The paper collected 28 patients with tibiofibular fractures from the Department of Orthopaedics in our hospital from March 2015 to June 2018. After the treatment, the follow-up evaluation of Taylor's three-dimensional external fixator for the treatment of tibiofibular fractures and concurrency the incidence of the disease, as well as the efficacy and occurrence of the internal fixation of the treatment of tibial fractures in our hospital. The results showed that Taylor's three-dimensional external fixator was superior to orthopaedics in the treatment of tibiofibular fractures in terms of efficacy and complications. To this end, the thesis research can be concluded as follows: Taylor three-dimensional external fixation in the treatment of tibiofibular fractures is more effective, and the incidence of occurrence is low, is a new technology for the treatment of tibiofibular fractures, it is worthy of clinical promotion.

scholarly journals Computer-Aided Planning in Orthognathic Surgery: A Comparative Study with the Establishment of Burstone Analysis-Derived 3D Norms

2019 ◽  
Vol 8 (12) ◽  
pp. 2106 ◽  
Author(s):  
Cheng-Ting Ho ◽  
Rafael Denadai ◽  
Hsin-Chih Lai ◽  
Lun-Jou Lo ◽  
Hsiu-Hsia Lin
Keyword(s):  
Orthognathic Surgery ◽  
Three Dimensional ◽  
Computer Assisted ◽  
Class Iii ◽  
Facial Soft Tissue ◽  
Skeletal Class ◽  
Nasolabial Angle ◽  
Normal Occlusion ◽  
Computer Aided ◽  
Cephalometric Measurements

Three-dimensional (3D) computer-aided simulation has revolutionized orthognathic surgery treatment, but scarce 3D cephalometric norms have been defined to date. The purposes of this study were to (1) establish a normative database of 3D Burstone cephalometric measurements for adult male and female Chinese in Taiwan, (2) compare this 3D norm dataset with the two-dimensional (2D) Burstone norms from Caucasian and Singaporean Chinese populations, and (3) apply these 3D norms to assess the outcome of a computer-aided simulation of orthognathic surgery. Three-dimensional Burstone cephalometric analysis was performed on 3D digital craniofacial image models generated from cone-beam computed tomography datasets of 60 adult Taiwanese Chinese individuals with normal occlusion and balanced facial profile. Three-dimensional Burstone analysis was performed on 3D image datasets from patients with skeletal Class III pattern (n = 30) with prior computer-aided simulation. Three-dimensional Burstone cephalometric measurements showed that Taiwanese Chinese males had significantly (p < 0.05) larger anterior and posterior facial heights, maxillary length, and mandibular ramus height than females, with no significant (p > 0.05) difference for facial soft-tissue parameters. The 3D norm dataset revealed Taiwanese Chinese-specific facial characteristics, with Taiwanese presenting (p < 0.05) a more convex profile, protrusive maxillary apical bases, protruding mandible, protruding upper and lower lips, and a shorter maxillary length and lower facial height than Caucasians. Taiwanese had significantly (p < 0.05) larger maxillary projection, vertical height ratio, lower face throat angle, nasolabial angle, and upper lip protrusion than Singaporean Chinese. No significant (p > 0.05) difference was observed between 3D norms and computer-aided simulation-derived 3D patient images for horizontal skeletal, vertical skeletal, and dental measurements, with the exception of two dental parameters (p < 0.05). This study contributes to literature by providing gender- and ethnic-specific 3D Burstone cephalometric norms, which can assist in the multidisciplinary-based delivery of orthodontic surgical care for Taiwanese Chinese individuals worldwide, including orthodontic management, computer-assisted simulation, and outcome assessment.

Secondary Repair of the Zygoma

2017 ◽  
Vol 33 (06) ◽  
pp. 571-580
Author(s):  
Susan Yanik ◽  
Sherard Tatum ◽  
Susannah Orzell
Keyword(s):  
Internal Fixation ◽  
Open Reduction ◽  
Computer Assisted ◽  
Rare Entity ◽  
Functional Deficits ◽  
Computer Assisted Design ◽  
Cad Cam ◽  
Fixation Techniques ◽  
Virtual Mapping ◽  
Crucial Part

AbstractSecondary deformities of the zygoma are a rare entity, thanks to the adoption and refinement of open reduction and internal fixation techniques. These injuries are often difficult to treat due to the unique structural, functional, and aesthetic properties of the zygoma. Purely cosmetic defects can often be managed with implants; however, functional deficits generally require mobilization, correction, and subsequent fixation of the defect(s). Performing the necessary osteotomies to mobilize the zygoma is the most crucial part of the procedure, and had traditionally been executed without the use of computer aids. Planning for and performing this step was very difficult and frequently resulted in unsatisfactory outcomes. Recent advancements in virtual mapping and planning have obviated the need for guesswork and have resulted in improved functional and aesthetic outcomes following repositioning. This article will discuss the use of implants, osteotomies, and computer-assisted design/modeling (CAD/CAM) in addressing secondary deformities of the zygoma.

Three-Dimensional Computer-Assisted Design of Craniofacial Surgical Procedures

1986 ◽  
Vol 77 (6) ◽  
pp. 886-887 ◽  
Author(s):  
Court Cutting ◽  
Fred L. Bookstein ◽  
Barry Grayson ◽  
Linda Fellingham ◽  
Joseph G. McCarthy ◽  
...  
Keyword(s):  
Surgical Procedures ◽  
Three Dimensional ◽  
Computer Assisted ◽  
Computer Assisted Design

Computer-Aided Monte Carlo Aircraft Tolerance Design Based on UG

2011 ◽  
Vol 338 ◽  
pp. 300-303
Author(s):  
Chang Hong Guo ◽  
Ping Xi ◽  
Zhen Yu Wang ◽  
Xing Dong Li
Keyword(s):  
Monte Carlo ◽  
Three Dimensional ◽  
Integrated Design ◽  
Tolerance Analysis ◽  
Digital Design ◽  
Tolerance Design ◽  
Computer Aided ◽  
Design And Manufacture

Along with the CAD technology being popularized, three-dimensional design of aircraft is ultimately realized into digital design. However, aircraft tolerances have not been designed by computer. They are mainly based on lots of manual calculations and not coordinated with integrated design and hold back the development of aircraft digital design and manufacture technologies. This paper introduces how to develop computer-aided aircraft tolerance analysis and distribution modules on UG and introduces Monte Carlo tolerance analysis technology. Running instances of aircraft tolerance design are illustrated in the paper.

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