Pre-operative Joint Visualization for Femoroacetabular Impingement
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Solution Overview
Problem
Current minimally-invasive arthroscopic techniques for treating femoroacetabular impingement (FAI) in orthopedic surgery lack precise guidance for determining the extent of bone removal, leading to under-resection and potential revision surgeries.
Innovation Solution
A pre-operative joint visualization system using 3D imaging and modeling to generate patient-specific measurements and visualizations, providing guidance on the extent of pathology and amount of bone to remove, based on Alpha Angle, Lateral Center Edge Angle, Acetabular Version, and Femoral Torsion, to restore normal morphology.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If minimally-invasive arthroscopic techniques are used to treat FAI, then surgical invasiveness is reduced, but measurement precision and guidance accuracy deteriorate
Solution Approach 1:
The system performs pre-operative 3D imaging and virtual surgical planning before the actual surgery. This preliminary action allows the surgeon to visualize the pathology, plan the exact resection amount, and simulate the procedure in advance, thereby compensating for the lack of real-time guidance during minimally-invasive arthroscopic surgery.
Solution Approach 2:
The system creates a virtual 3D copy of the patient's hip joint anatomy using CT or MRI data. This digital replica allows for precise measurement and visualization of the FAI pathology without requiring direct visual access during surgery, enabling accurate planning for minimally-invasive procedures.
2Manufacturing precision
If physicians remove less bone during FAI treatment, then surgical precision is maintained, but manufacturing precision of the desired anatomy deteriorates
Solution Approach 1:
The system provides visual feedback through 3D renderings that show the current anatomy, the planned resection, and the expected post-operative anatomy. This feedback loop allows the surgeon to adjust the resection plan to achieve the desired outcome, balancing caution with the need for adequate pathology removal.
Solution Approach 2:
The system transitions from 2D pre-operative imaging to 3D virtual modeling and rendering. This dimensional enhancement provides comprehensive visualization of the pathology extent and resection requirements, enabling more accurate bone removal decisions while maintaining surgical caution.
3Measurement precision
If detailed 3D modeling and visualization are implemented, then measurement precision improves, but device complexity increases
Solution Approach 1:
The system uses a single 3D modeling platform that performs multiple functions: generating 3D models from 2D images, calculating anatomical measurements, visualizing pathology, planning resection, and simulating outcomes. This multi-functional approach achieves high measurement precision without requiring separate complex systems for each task.
Data Source
AI summary
A method for visualizing at least one region of a joint that deviates from a baseline anatomy includes receiving image data associated with a joint of a subject, generating a three-dimensional model of at least a portion of the joint using the image data, identifying at least one region of the joint that deviates from the baseline anatomy by comparing the three-dimensional model to a baseline model, generating a measurement of a characteristic of the joint at one or more predefined locations using the three-dimensional model and a coordinate system, and generating a three-dimensional rendering of the model that includes a visual indication of the at least one region of the three-dimensional model that deviates from the baseline so that the region is visually indicated according to degree of deviation, and a representation of the measurement of the characteristic of the joint that is positioned according to the predefined locations.