Surgical Navigation System for Fracture Reduction
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Solution Overview
Problem
Current methods for image-guided fracture reduction are inefficient due to complex alignment of bone fragments, low orientation alignment efficiency, and exposure to radioactive rays during fluoroscopy, as well as the need for additional manpower and limited operation space when using ultrasonic images.
Innovation Solution
A computing system and method that generates 3D models from pre-operative images, updates spatial information in real-time using markers, and provides overlay visual information to guide the accurate alignment and reduction of fractured bones without twisting or dislocation, using a surgical navigation system to improve user interface and workflow efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If real-time fluoroscopic image matching is used to align proximal and distal parts of broken bone, then registration between medical images is improved, but exposure to radioactive rays increases
Solution Approach 1:
The system performs pre-operative 3D modeling and virtual fracture reduction planning before the actual surgery. All image registration and alignment calculations are completed in advance using CT or MRI data, creating a virtual surgical plan that guides the actual procedure without requiring repeated fluoroscopic imaging during surgery.
Solution Approach 2:
The system creates a virtual 3D copy of the patient's bone structure from pre-operative imaging data. This digital twin allows for virtual manipulation and alignment assessment without exposing the patient to additional radiation, replacing the need for repeated fluoroscopic verification during surgery.
2Object-affected harmful factors
If ultrasonic images are used for guidance, then radiation exposure is reduced, but additional manpower and limited operation space are required
Solution Approach 1:
The system replaces the mechanical ultrasonic imaging approach with a computational 3D modeling system based on pre-operative CT or MRI data. This eliminates the need for physical ultrasonic probes and operators during surgery, as all guidance is provided through pre-computed 3D visualizations and virtual alignment assessments.
3Productivity
If mirror image of unbroken bone is generated for reference, then dislocation reduction efficiency is improved, but orientation alignment efficiency remains low
Solution Approach 1:
The system transitions from 2D mirror image comparison to full 3D virtual modeling and alignment assessment. By creating and manipulating three-dimensional virtual models of the bone fragments, the system enables simultaneous evaluation of both dislocation and orientation in multiple planes, providing comprehensive alignment guidance that addresses both positioning and rotational accuracy.
4Manufacturing precision
If complex alignment procedures are performed manually, then fracture reduction can be achieved, but the process is considerably burdensome for surgeons
Solution Approach 1:
The system provides real-time visual feedback during the reduction process by comparing the actual positions of bone fragments against the pre-planned virtual alignment. This immediate feedback allows surgeons to make precise adjustments without repeated imaging, reducing the burden of manual alignment while maintaining high accuracy through computer-guided verification.
Data Source
AI summary
Disclosed herein are a computer assistance method for the reduction of a fracture and a computing system for assisting the reduction of a fracture. The computer assistance method includes: generating a first model of a first bone, which is a treatment target, based on a pre-operative medical image; generating a second model, assumed to be obtained after the restoration of the first bone, based on the pre-operative medical image; acquiring a third model in which the spatial information of the first model has been updated by incorporating, into the spatial information, the movement of the first bone occurring during treatment after the installation of markers onto the first bone; and generating overlay visual information based on the second and third models registered onto the same space.