3D Bone Removal Overlay for Precise Joint Arthroscopy
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Solution Overview
Problem
Current minimally-invasive surgical techniques for joint pathologies, such as hip arthroscopy, face challenges in accurately determining the amount and location of bone removal due to limited and distorted endoscopic views, making it difficult for surgeons to achieve the desired joint morphology.
Innovation Solution
A system and method that overlays a three-dimensional representation of planned bone removal onto a two-dimensional intra-operative image, aligning a pre-generated three-dimensional model of the joint with the two-dimensional image using features like the center of the femoral head or acetabulum, providing guidance on where and how much bone to remove.
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 field of view and image distortion
Solution Approach 1:
The patent overlays a three-dimensional representation of planned bone removal onto a two-dimensional intra-operative image, creating a multi-dimensional visualization that provides surgeons with spatial context beyond the limited endoscopic view. This dimensional enhancement allows precise localization of bone removal targets while maintaining minimally-invasive access
Solution Approach 2:
The system introduces an intermediary computational layer that processes pre-operative imaging data and intra-operative images to generate an overlay representation. This intermediary layer translates complex spatial relationships into intuitive visual guidance, bridging the gap between limited endoscopic views and comprehensive surgical planning
2Area of stationary object
If endoscopic imaging is used for joint surgery, then incision size is minimized, but visualization accuracy deteriorates due to image distortion and limited field of view
Solution Approach 1:
By projecting three-dimensional bone removal plans onto two-dimensional intra-operative images, the system compensates for the limited field of view and distortion inherent in endoscopic imaging. The overlay representation restores spatial accuracy without requiring larger incisions for direct visualization
Solution Approach 2:
The system creates a digital copy of the planned bone removal geometry and overlays it onto the intra-operative image. This virtual copy serves as a precise guide for surgical execution, eliminating the need for direct visual measurement in the distorted endoscopic view
3Ease of operation
If traditional endoscopic debridement is performed, then surgical invasiveness is reduced, but determination of bone removal amount becomes difficult
Solution Approach 1:
The overlay representation provides real-time visual feedback by displaying the planned bone removal geometry superimposed on the actual joint anatomy. This feedback loop allows surgeons to continuously compare their progress against the surgical plan, ensuring accurate bone removal without excessive invasiveness
Solution Approach 2:
The system performs preliminary visualization of the bone removal plan before surgery begins and maintains this guidance throughout the procedure. The pre-planned three-dimensional representation is registered onto intra-operative images, providing continuous reference information that prevents loss of spatial context during minimally-invasive debridement
Data Source
AI summary
A method for guiding bone removal during a surgical procedure includes receiving a two-dimensional image of at least a portion of a joint during the surgical procedure, determining an alignment of a pre-generated three-dimensional model of the at least a portion of the joint with the two-dimensional image based on one or more features in the two-dimensional image that are associated with the at least a portion of the joint, wherein the pre-generated three-dimensional model comprises a representation of planned bone removal, generating an overlay image based on the determined alignment, the overlay image comprising an overlay of at least a portion of the representation of planned bone removal on the two-dimensional image, and displaying the overlay image to guide bone removal during the surgical procedure.