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Aaron M. Jaeger

Media Lab, Massachusetts Institute of Technology, Cambridge, Massachusetts United States


Contributions

  • A Framework for Measuring the Time-Varying Shape and Full-Field Deformation of Residual Limbs Using 3D Digital Image Correlation
    A Framework for Measuring the Time-Varying Shape and Full-Field Deformation of Residual Limbs Using 3D Digital Image Correlation

    Effective prosthetic socket design following lower-limb amputation requires accurate characterization of the residuum dynamic shape. We propose a novel framework for measuring residuum shape and deformation using a high-resolution low-cost multi-camera system. The system captures simultaneous images of the residuum, which are analyzed using a custom open-source three-dimensional digital image correlation (3D-DIC) toolbox. Measurements obtained during knee flexions, muscle contractions, and swelling upon socket removal, quantified the time-varying residuum shapes, strain fields, volumes, and cross-sectional areas. These data may be used to inform computational design algorithms of prosthetic sockets and other wearable technologies mechanically interfacing with the skin.

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