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Title: Virtual haptic system for intuitive planning of bone fixation plate placement
Authors: Choi, KS 
Schmutz, B
He, XJ 
Chan, WL
Schuetz, M
Issue Date: 2017
Source: Informatics in medicine unlocked, 2017, v. 9, p. 145-153
Abstract: Placement of pre-contoured fixation plate is a common treatment for bone fracture. Fitting of fixation plates on fractured bone can be preoperatively planned and evaluated in 3D virtual environment using virtual reality technology. However, conventional systems usually employ 2D mouse and virtual trackball as the user interface, which makes the process inconvenient and inefficient. In the paper, a preoperative planning system equipped with 3D haptic user interface is proposed to allow users to manipulate the virtual fixation plate intuitively to determine the optimal position for placement on distal medial tibia. The system provides interactive feedback forces and visual guidance based on the geometric requirements. Creation of 3D models from medical imaging data, collision detection, dynamics simulation and haptic rendering are discussed. The system was evaluated by 22 subjects. Results show that the time to achieve optimal placement using the proposed system was shorter than that by using 2D mouse and virtual trackball, and the satisfaction rating was also higher. The system shows potential to facilitate the process of fitting fixation plates on fractured bones as well as interactive fixation plate design.
Keywords: Fit assessment
Fixation plate
Fracture fixation
Virtual reality
Publisher: Elsevier
Journal: Informatics in medicine unlocked 
ISSN: 2352-9148
DOI: 10.1016/j.imu.2017.07.005
Rights: © 2017 Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (
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