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Integrated pressure-force-kinematics measuring system for the characterisation of plantar foot loading during locomotion

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Abstract

Plantar pressure, ground reaction force and body-segment kinematics measurements are largely used in gait analysis to characterise normal and abnormal function of the human foot. The combination of all these data together provides a more exhaustive, detailed and accurate view of foot loading during activities than traditional measurement systems alone do. A prototype system is presented that integrates a pressure platform, a force platform and a 3D anatomical tracking system to acquire combined information about foot function and loading. A stereophotogrammetric system and an anatomically based protocol for foot segment kinematics is included in a previously devised piezo-dynamometric system that combines pressure and force measurements. Experimental validation tests are carried out to check for both spatial and time synchronisation. Misalignment of the three systems is found to be within 6.0, 5.0 and 1.5mm for the stereophotogrammetric system, force platform and pressure platform, respectively. The combination of position and pressure data allows for a more accurate selection of plantar foot subareas on the footprint. Measurements are also taken on five healthy volunteers during level walking to verify the feasibility of the overall experimental protocol. Four main subareas are defined and identified, and the relevant vertical and shear force data are computed. The integrated system is effective when there is a need for loading measurements in specific plantar foot subareas. This is attractive both in clinical assessment and in biomechanics research.

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Authors and Affiliations

  1. Biomedical Engineering Laboratory, Istituto Superiore di Sanità, Rome, Italy

    C. Giacomozzi & V. Macellari

  2. Movement Analysis Laboratory, Istituti Ortopedici Rizzoli, Bologna, Italy

    A. Leardini & M. G. Benedetti

Authors
  1. C. Giacomozzi
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  2. V. Macellari
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  3. A. Leardini
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  4. M. G. Benedetti
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Correspondence to C. Giacomozzi.

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Giacomozzi, C., Macellari, V., Leardini, A. et al. Integrated pressure-force-kinematics measuring system for the characterisation of plantar foot loading during locomotion. Med. Biol. Eng. Comput. 38, 156–163 (2000). https://doi.org/10.1007/BF02344770

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  • DOI: https://doi.org/10.1007/BF02344770

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