naa a22 4500 510808247 CHVBK 20180411083428.0 cr unu---uuuuu 180411e20130301xx s 000 0 eng 10.1007/s11548-012-0775-5 doi (NATIONALLICENCE)springer-10.1007/s11548-012-0775-5 Augmented reality patient-specific reconstruction plate design for pelvic and acetabular fracture surgery [Elektronische Daten] [Fangyang Shen, Bailiang Chen, Qingshan Guo, Yue Qi, Yue Shen] Purpose: The objective of this work is to develop a preoperative reconstruction plate design system for unilateral pelvic and acetabular fracture reduction and internal fixation surgery, using computer graphics and augmented reality (AR) techniques, in order to respect the patient-specific morphology and to reduce surgical invasiveness, as well as to simplify the surgical procedure. Materials and methods: Our AR-aided implant design and contouring system is composed of two subsystems: a semi-automatic 3D virtual fracture reduction system to establish the patient-specific anatomical model and a preoperative templating system to create the virtual and real surgical implants. Preoperative 3D CT data are taken as input. The virtual fracture reduction system exploits the symmetric nature of the skeletal system to build a "repaired” pelvis model, on which reconstruction plates are planned interactively. A lightweight AR environment is set up to allow surgeons to match the actual implants to the digital ones intuitively. The effectiveness of this system is qualitatively demonstrated with 6 clinical cases. Its reliability was assessed based on the inter-observer reproducibility of the resulting virtual implants. Results: The implants designed with the proposed system were successfully applied to all cases through minimally invasive surgeries. After the treatments, no further complications were reported. The inter-observer variability of the virtual implant geometry is 0.63mm on average with a standard deviation of 0.49mm. The time required for implant creation with our system is 10min on average. Conclusion: It is feasible to apply the proposed AR-aided design system for noninvasive implant contouring for unilateral fracture reduction and internal fixation surgery. It also enables a patient-specific surgical planning procedure with potentially improved efficiency. CARS, 2012 Augmented reality nationallicence Implant templating nationallicence Pelvis nationallicence Acetabulum nationallicence Fracture reduction and fixation nationallicence Shen Fangyang State Key Laboratory of Virtual Reality Technology and Systems, Beihang University, Beijing, China aut Chen Bailiang IADI, INSERM U947, Université de Lorraine, Nancy, France aut Guo Qingshan State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Institute of Surgery Research, Daping Hospital, Third Military Medical University, 400042, Chongqing, China aut Qi Yue State Key Laboratory of Virtual Reality Technology and Systems, Beihang University, Beijing, China aut Shen Yue State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Institute of Surgery Research, Daping Hospital, Third Military Medical University, 400042, Chongqing, China aut International Journal of Computer Assisted Radiology and Surgery Springer-Verlag 8/2(2013-03-01), 169-179 1861-6410 8:2<169 2013 8 11548 https://doi.org/10.1007/s11548-012-0775-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11548-012-0775-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Shen Fangyang State Key Laboratory of Virtual Reality Technology and Systems, Beihang University, Beijing, China aut NATIONALLICENCE 700 1- Chen Bailiang IADI, INSERM U947, Université de Lorraine, Nancy, France aut NATIONALLICENCE 700 1- Guo Qingshan State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Institute of Surgery Research, Daping Hospital, Third Military Medical University, 400042, Chongqing, China aut NATIONALLICENCE 700 1- Qi Yue State Key Laboratory of Virtual Reality Technology and Systems, Beihang University, Beijing, China aut NATIONALLICENCE 700 1- Shen Yue State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Institute of Surgery Research, Daping Hospital, Third Military Medical University, 400042, Chongqing, China aut NATIONALLICENCE 773 0- International Journal of Computer Assisted Radiology and Surgery Springer-Verlag 8/2(2013-03-01), 169-179 1861-6410 8:2<169 2013 8 11548 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer