3D Bone Model Overlay for Precise Joint Bone Removal Guidance
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Solution Overview
Problem
Current minimally invasive surgical techniques for joint pathologies, such as joint arthroscopy, face challenges in accurately determining the amount and geometry of bone removal due to limited and distorted endoscopic views, making it difficult for surgeons to precisely reshape the joint.
Innovation Solution
A system and method that overlays a pre-operatively generated three-dimensional model of bony anatomy onto a two-dimensional intra-operative image, allowing surgeons to visualize planned bone removal beyond the imaging plane and adjust transparency and tool representation for precise alignment and guidance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If endoscopic imaging is used for minimally invasive joint surgery, then patient trauma is reduced, but surgical precision deteriorates due to limited and distorted field of view
Solution Approach 1:
The system overlays a three-dimensional model of the joint onto the two-dimensional endoscopic image, adding depth perception and spatial context. This dimensional enhancement allows surgeons to visualize bone geometry and removal boundaries in 3D space while maintaining the minimally invasive 2D imaging approach, thereby preserving patient benefits while improving surgical precision
Solution Approach 2:
The system creates a virtual three-dimensional copy of the joint anatomy based on pre-operative imaging data and overlays it onto the intra-operative endoscopic view. This digital twin provides accurate geometric reference for bone removal without requiring physical models or additional invasive imaging, enabling precise bone reshaping while maintaining minimally invasive benefits
2Object-affected harmful factors
If endoscopic imaging is used for joint surgery, then surgical invasiveness is reduced, but visualization accuracy deteriorates due to image distortion and limited field of view
Solution Approach 1:
By superimposing a three-dimensional anatomical model onto the two-dimensional endoscopic image, the system restores depth information and spatial relationships that are lost in flat endoscopic views. This allows accurate visualization of bone geometry and pathology in three-dimensional space while maintaining the minimally invasive endoscopic approach
Solution Approach 2:
The system transforms pre-operative three-dimensional imaging data into an intra-operative visualization format that can be accurately registered with endoscopic images. By changing the representation parameters from 2D endoscopic coordinates to 3D anatomical coordinates, the system achieves accurate bone geometry visualization despite the inherent limitations of endoscopic imaging
3Manufacturing precision
If three-dimensional model overlay is implemented, then surgical guidance accuracy is improved, but system complexity increases
Solution Approach 1:
The system uses a single integrated computing platform that performs multiple functions: storing pre-operative imaging data, generating three-dimensional models, registering them with intra-operative endoscopic images, and providing real-time surgical guidance. This multi-functional approach consolidates what could be multiple separate systems into one unified platform, reducing overall system complexity while maintaining high guidance accuracy
Solution Approach 2:
The system creates a virtual three-dimensional copy of the joint anatomy that can be manipulated and viewed from any angle without requiring physical models or additional imaging equipment. This digital replica provides comprehensive surgical guidance while avoiding the complexity of physical model fabrication, sterilization, and intra-operative imaging systems
Data Source
AI summary
A method for guiding bone removal for a surgical procedure includes receiving a two-dimensional image of bony anatomy; determining an alignment of a pre-generated three-dimensional model of the bony anatomy to the bony anatomy in the two-dimensional image; and generating and displaying a visualization that comprises: a first portion comprising an overlay of at least a portion of the three-dimensional model on the two-dimensional image, wherein the overlay of at least a portion of the three-dimensional model is displayed according to the determined alignment, and a second portion comprising a representation of at least a portion of the three-dimensional model and a representation of the determined alignment of the three-dimensional model of the bony anatomy to the bony anatomy in the two-dimensional image.