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Related Experiment Videos

A simple technique for assessing heel contact in orthoses

A D Grant1, D A Sala, F J Kummer

  • 1Hospital for Joint Diseases, New York, New York 10003, USA.

Journal of Pediatric Orthopedics
|May 1, 1996
PubMed
Summary

A simple pressure sensor accurately detects heel contact within orthoses for neuromuscular disorder patients. This inexpensive device aids in assessing proper ankle-foot positioning and weightbearing during standing protocols.

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Area of Science:

  • Biomedical Engineering
  • Rehabilitation Technology
  • Clinical Biomechanics

Background:

  • Orthoses are crucial for managing ankle and foot positioning in neuromuscular disorders.
  • Accurate determination of heel contact within orthoses is clinically challenging.
  • Existing methods for assessing heel contact can be complex or costly.

Purpose of the Study:

  • To develop and validate a simple, inexpensive device for detecting heel contact inside an orthosis.
  • To assess the reliability of this device in patients with neuromuscular disorders.
  • To compare the device's performance against a gold-standard computerized system.

Main Methods:

  • Construction of a device using a thin, single-cell pressure sensor and a digital multimeter.

Related Experiment Videos

  • Positioning the sensor between the patient's heel and the orthosis.
  • Evaluating heel contact during a controlled standing protocol in 23 patients.
  • Comparing sensor readings with a computerized F-scan system for plantar weightbearing forces in a subset of patients.

    • Main Results:

    • The developed single-cell pressure sensor system proved effective in determining heel contact.
    • A majority of the evaluated patients did not exhibit significant heel weightbearing.
    • The sensor system demonstrated 100% agreement with the F-scan system in assessing heel contact.
    • The device is simple, inexpensive, and easy to use.

    Conclusions:

    • The single-cell pressure sensor is a reliable and cost-effective tool for assessing heel contact within orthoses.
    • This technology can improve the management of ankle-foot positioning in patients with neuromuscular disorders.
    • The findings support the clinical utility of this simple sensor for routine assessment.