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Related Experiment Videos

The reliability of three techniques for measuring foot position

S Weiner-Ogilvie1, K Rome

  • 1Physiotherapy Department, School of Health, University of Teesside, England, United Kingdom.

Journal of the American Podiatric Medical Association
|September 15, 1998
PubMed
Summary

This study found that while foot position measurements like valgus index, navicular height, and arch height showed observer variability, navicular height offered the best reliability. This highlights potential measurement errors in assessing foot posture.

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Area of Science:

  • Biomechanics
  • Podiatry
  • Orthopedics

Background:

  • Accurate measurement of foot position is crucial for diagnosing and managing various foot conditions.
  • Commonly used techniques include the valgus index, navicular height, and arch height.
  • Understanding the reliability of these methods is essential for clinical practice and research.

Purpose of the Study:

  • To evaluate the interobserver and intraobserver reliability of three common foot position measurement techniques.
  • To compare the reliability of the valgus index, navicular height, and arch height methods.
  • To identify potential sources of measurement error in assessing foot posture.

Main Methods:

  • Twenty healthy subjects participated in the study.
  • Three techniques were used to measure foot position: valgus index, navicular height, and arch height.

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  • Measurements were taken by two observers on two separate occasions to assess reliability.

    • Main Results:

    • Significant interobserver differences (P < .05) were found for all three measurement techniques.
    • No significant intraobserver differences (P < .05) were observed between two separate visits.
    • Navicular height demonstrated the highest degree of both intraobserver and interobserver agreement.

    Conclusions:

    • There is considerable variation in foot position within the healthy population.
    • Measurement error can arise from challenges in defining foot position, technique application, and instrumentation.
    • Navicular height measurement appears to be the most reliable among the evaluated techniques for assessing foot posture.