Virtual Implant Positioning Using Multi-View 2D Scan Planning
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Solution Overview
Problem
Current orthopedic surgery planning methods, such as 2D templating and 3D virtual simulation, lack precision due to the absence of depth information, leading to imprecise selection and positioning of orthopedic implants, which can result in sub-optimal surgical outcomes and reduced patient safety.
Innovation Solution
A method involving generating multiple 2D views from a 3D volume of scan data to provide positional information for virtual implant components, allowing for 3D positioning by combining positional information from these views to enhance accuracy and control, with adjustments restricted to a single degree of freedom in each view.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If 2D templating is used for implant planning, then the procedure is simple and quick, but depth information is lost leading to imprecise positioning
Solution Approach 1:
The patent transforms 2D scan data into multiple 2D views that represent 3D spatial relationships. By generating orthogonal views (front, side, top) from the same 3D coordinate system, the system recovers depth information while maintaining the efficiency of 2D display and interaction, resolving the contradiction between simplicity and precision.
2Ease of operation
If manual templating with physical x-ray images is used, then the process is straightforward, but magnification errors and lack of true geometrical configuration lead to rough guidance only
Solution Approach 1:
The patent replaces physical x-ray images and manual acetate sheet templating with a digital system that processes scan data through coordinate transformation algorithms. The automated generation of scaled 2D views from 3D data eliminates manual magnification corrections and provides true geometrical relationships, improving precision while maintaining ease of operation through graphical user interface interactions.
3Measurement precision
If multiple 2D views from 3D volume are generated and combined, then 3D positional information accuracy improves, but computational complexity increases
Solution Approach 1:
The patent segments the 3D spatial information into multiple orthogonal 2D views (front, side, top), each representing specific planes of the 3D coordinate system. This segmentation allows the system to process and display information in manageable 2D formats while maintaining accurate 3D positional relationships, reducing computational complexity compared to rendering full 3D graphics.
Data Source
AI summary
A method for planning an orthopedic procedure including positioning a virtual implant component relative to a 3D volume of scan data of a patient using multiple 2D views of the scan data generated from the 3D volume at different view angles is disclosed. Positional information is developed using the generated 2D views with 3D positional information for the virtual implant component relative the 3D volume of scan data provided based on positional information developed relative to the 2D views.