Automated Bone Model Orientation Correction
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Solution Overview
Problem
Current methods for determining the correction angle for bone models, particularly femoral models, suffer from inter-operator and intra-operator variability, leading to inconsistent orientations and reduced accuracy in surgical planning.
Innovation Solution
A method involving generating a bone model, identifying target orientations, cropping the model to create a cylindrical representation, registering the cylinder to the model, and calculating a correction angle to align the model accurately, thereby reducing variability and improving consistency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual orientation determination using anatomical landmarks is used, then the process can be performed with simple tools, but inter-operator and intra-operator variability occur leading to inconsistent orientations
Solution Approach 1:
The patent replaces manual mechanical orientation determination with an automated computational system. The system automatically identifies anatomical landmarks, generates bone models, determines orientations, and calculates correction angles through computer processing, eliminating human operator variability while maintaining the same functional outcome of accurate bone orientation determination.
Solution Approach 2:
The system performs self-service by automatically processing imaging data to generate bone models, identify landmarks, determine orientations, and calculate correction angles without requiring manual intervention. The automated pipeline processes the entire workflow independently, ensuring consistent and reproducible results across different operators and time points.
2Measurement precision
If automated correction angle determination is implemented, then consistency and accuracy of bone model orientation improve, but the complexity of the processing system increases
Solution Approach 1:
The patent segments the complex orientation determination process into distinct modular steps: (1) receiving and processing imaging information, (2) generating bone models, (3) identifying anatomical landmarks, (4) determining target orientations, (5) generating cropped models, (6) registering cylinders to cropped models, and (7) calculating correction angles. This segmentation allows each step to be optimized independently while working together to achieve high measurement precision.
Solution Approach 2:
The patent introduces intermediary elements such as cropped models and registered cylinders as intermediate representations. These intermediaries simplify the complex relationship between the original bone model and the final correction angle calculation, enabling precise measurement through staged processing rather than direct complex computation.
3Manufacturing precision
If manual orientation assessment is used, then the system remains simple and easy to operate, but variability in orientation determination reduces surgical planning accuracy
Solution Approach 1:
The patent replaces manual mechanical orientation assessment with an automated computational system that processes imaging data through algorithmic steps. The system automatically generates bone models, identifies landmarks, determines orientations, and calculates correction angles, eliminating the need for manual manipulation while achieving high surgical planning accuracy.
Solution Approach 2:
The patent incorporates feedback mechanisms where the system calculates correction angles based on the difference between current model orientation and target orientation. This feedback loop continuously refines the orientation determination, ensuring high precision in surgical planning by adjusting and verifying each step of the orientation process.
Data Source
AI summary
An exemplary method includes receiving information relating to a long bone, and generating a bone model representative of the long bone. The long bone includes a shaft, and the bone model includes a shaft model representative of at least a portion of the shaft. The method includes identifying a target orientation for the bone model, and generating a cropped model including at least a portion of the shaft model. The method further includes generating cylinder parameters based at least in part upon the cropped model, registering the cylinder to the cropped model, and generating registration information related to the registering. The method further includes generating a correction angle based upon the registration information, and generating a corrected model based upon the correction angle. The method may further include generating an adjusted model based upon the corrected model, and generating a surgical device using the adjusted model.