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Rapid calculation of bespoke body segment parameters using 3D infra-red scanning
Samuel H L Smith1, Anthony M J Bull1
1Department of Bioengineering, Imperial College London, Kensington, London SW7 2AZ, United Kingdom.
Medical Engineering & Physics
|October 21, 2018
Summary
3D scanning accurately determines subject-specific body segment parameters for musculoskeletal modeling, improving biomechanics research accuracy. This method offers a precise alternative to traditional regression tables.
Area of Science:
- Biomechanics
- Human Anatomy
- Medical Imaging
Background:
- Musculoskeletal modeling relies on body segment parameters (mass, center of mass, inertia).
- Traditional regression tables provide generalized parameters with significant population variability (up to 40%).
- Existing methods lack subject-specific accuracy, limiting biomechanics research precision.
Purpose of the Study:
- To evaluate 3D scanning for generating subject-specific body segment parameters.
- To compare 3D scanning-derived parameters with cadaveric data.
- To enhance the accuracy and specificity of musculoskeletal modeling.
Main Methods:
- Utilized an infra-red 3D scanner to capture full-body scans of 95 individuals (males and females).
- Developed an algorithm to compute bespoke segment mass, center of mass, and inertial properties.
- Validated results against cadaveric data for accuracy assessment.
Main Results:
- 3D scanning algorithm successfully calculated subject-specific body segment parameters.
- Generated parameters demonstrated comparability with cadaveric data.
- Achieved high accuracy and specificity in inertial property calculations.
Conclusions:
- 3D scanning offers a rapid and accurate method for obtaining subject-specific body segment parameters.
- This technique significantly improves the specificity of musculoskeletal modeling outputs.
- Enhanced modeling accuracy through subject-specific data benefits biomechanics research.
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