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The relationship between arch height and foot length: Implications for size grading.

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PubMed
Summary

Foot length does not reliably predict arch height in individuals with normal foot posture. This finding challenges current footwear design methods that use proportional scaling for a better midfoot fit.

Keywords:
AllometryAnthropometryFootwearFootwear gradingFootwear lastFootwear sizingMedial longitudinal arch

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Area of Science:

  • Biomechanics
  • Anthropometry
  • Podiatry

Background:

  • Medial longitudinal arch height is crucial for classifying foot type and function.
  • Understanding foot anthropometry is vital for designing ergonomic footwear.
  • Current footwear design often scales instep dimensions proportionally to foot length.

Purpose of the Study:

  • To investigate the relationship between human arch height and foot length in individuals with normal foot posture.
  • To determine if a direct proportional relationship exists between these parameters.

Main Methods:

  • An observational study involving 62 healthy volunteers with normal foot posture.
  • 3D foot scanning was used to measure foot length and arch height parameters.
  • Simple Linear Regression and Correlation analyses were performed.

Main Results:

  • Analysis revealed a poor correlation between foot length and all measured arch height parameters.
  • No significant relationships were identified between arch height and foot length.

Conclusions:

  • The study found no significant predictive relationship between arch height and foot length.
  • This lack of correlation has implications for current footwear design practices relying on proportionate scaling.
  • Current methods may not ensure optimal fit and function in the midfoot region for the general population.