Design, Construction and Validation of Foot Photo Box in Measuring a Selection of Footprint Indexes

Document Type : Research Paper

Authors

1 Department of Health & Sport Medicine, Faculty of Sport Sciences, University of Tehran, Tehran, Iran.

2 Department of Health & Sport Medicine, Faculty of Sport Sciences, University of Tehran, Tehran, Iran

Abstract

Background and purpose: Measuring medial longitudinal arch of the foot is considered as the most important reference to identify foot disorders and to follow up treatment procedure and using footprint indexes is known as the most common method to evaluate medial longitudinal arch of foot. The objective of this study is to introduce a new designed and constructed device known as Foot Photo Box for measuring common footprint indexes, and to validate it.
Methodology: In this descriptive-correlation study, 20 male and female subjects were randomly selected from statistical population. Measuring common footprint indexes was done using foot photo Box. Design of this device is based on a camera and image processing technique which has capability to compute all indexes of foot. Lateral radiography of foot was used as a golden standard for validating the new device .To determine validation of the new device, Pearson correlation coefficient was used.
Results: Results showed that there is strong and very strong validity between the values of footprint indexes obtained from Foot Photo Box and radiography (r=0.55 to 0.89). The highest correlation coefficient was for Staheli index and Calcaneal Inclination Angle (r=0.89) and the lowest correlation coefficient was for Chippaux-Smirak index and navicular height (r=0.55).
Conclusion: Results of this research showed that Foot Photo Box has a high validation in measuring common footprint indexes; therefore using this device is suggested for careful and rapid measurement of footprint indexes.

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References

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Journal of Applied Exercise Physiology
Volume 13, Issue 25
September 2017
Pages 137-146

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History

  • Receive Date: 16 March 2016
  • Revise Date: 23 September 2017
  • Accept Date: 22 August 2016

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