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Related Experiment Videos

Measuring first ray mobility with a new device

W M Glasoe1, H J Yack, C L Saltzman

  • 1Physiotherapy Associates, Cedar Rapids, IA 52401, USA.

Archives of Physical Medicine and Rehabilitation
|January 23, 1999
PubMed
Summary
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First ray hypermobility, a cause of foot problems, can now be measured. A new device quantifies first metatarsal vertical displacement, aiding clinicians in treating foot pathologies.

Area of Science:

  • Biomechanics
  • Orthopedics
  • Podiatry

Background:

  • First ray hypermobility is associated with various foot abnormalities.
  • First metatarsal vertical displacement correlates with first ray dorsiflexion.

Purpose of the Study:

  • To introduce a novel device for measuring first ray mobility.
  • To describe the design, instrumentation, and testing procedure of this device.

Main Methods:

  • A new device was developed to measure first ray mobility.
  • The device applies a dorsiflexing force to the first metatarsal head.
  • Vertical displacement of the first metatarsal is measured to quantify mobility.

Main Results:

  • The device provides a safe and reliable method for measuring maximal first ray displacement.

Related Experiment Videos

  • The study details the design and instrumentation of the measurement device.

    • Conclusions:

    • This new measurement tool can assist clinicians in treatment selection for foot pathologies.
    • Accurate assessment of first ray mechanics is crucial for managing faulty foot mechanics.