3D Joint Motion Analysis for Quantitative Musculoskeletal Assessment
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Solution Overview
Problem
Current musculoskeletal examinations and rehabilitation exercises are subjective and qualitative, lacking reliable quantitative data for accurate musculoskeletal movement analysis, leading to unreliable healthcare services and increasing demand for data-based services.
Innovation Solution
A method for evaluating musculoskeletal injuries through 3D dynamic joint range of motion testing and postural abnormalities through static posture testing, using a multi-view measurement device and server system to analyze joint positions and movements along X, Y, and Z axes, and provide personalized rehabilitation or preventive exercises based on quantitative data analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If qualitative assessment through visual inspection and palpation is used, then healthcare services can be provided based on professional expertise, but measurement reliability and trustworthiness of data are reduced
Solution Approach 1:
The patent replaces subjective mechanical assessment methods (visual inspection and palpation) with objective optical measurement systems (multiple cameras capturing 3D movement data). This substitution eliminates human subjectivity while maintaining assessment capability, directly resolving the contradiction between reliability and system complexity.
Solution Approach 2:
The patent creates a virtual 3D model (copy) of the patient's musculoskeletal system based on optical data. This digital replica allows for repeated, consistent measurements without requiring the same physical examination process, improving reliability while keeping the actual measurement system relatively simple.
2Measurement precision
If two-dimensional posture assessments are used, then existing visual inspections can be supplemented, but the reliability and scope of assessment items are limited
Solution Approach 1:
The patent transitions from 2D camera views to 3D spatial reconstruction of joint movements. By adding the depth dimension and enabling calculations in three-dimensional space, the system achieves precise measurement of movement ranges and postural abnormalities that cannot be captured in two dimensions.
3Reliability
If standardized 3D quantitative measurement is implemented, then data-based services can be developed with improved reliability, but the complexity of the measurement system increases
Solution Approach 1:
The patent divides the complex measurement task into separate functional modules: data acquisition (multiple cameras), data processing (coordinate extraction and 3D reconstruction), and analysis (joint angle calculation and movement range assessment). This segmentation makes the overall system more manageable and easier to implement while maintaining high reliability.
Data Source
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AI summary
Proposed is a method for evaluating and analyzing musculoskeletal injuries through 3D dynamic joint range of motion testing, and postural abnormalities through static posture testing. In the method, compensatory movement (compensatory action) and Limitation Of Motion (LOM) are calculated by analyzing a position or changes in each joint along X, Y, and Z axes when motion injury testing or posture testing is performed, and a rehabilitation exercise and a preventive exercise suitable for each individual are recommended accordingly and guide videos are provided together, thereby increasing the participation rate and the efficiency of the rehabilitation exercise and the preventive exercise.