Computational evaluation of the footprint: reference values of the plantar arch index in a sample of the Brazilian population
DOI:
https://doi.org/10.11606/issn.2317-0190.v14i1a102765Keywords:
Foot/Anatomy & Histology, Dermatoglyphics, Population, BrazilAbstract
The presence of the medial longitudinal arch (MLA) is characteristic of the human feet and has been used for the classification of the normal, cavus and flat foot. The literature provides information on several methods and different techniques for the measurement of the MLA, each of them presenting advantages and disadvantages. We chose the footprint method and the measurement of arch index (AI) as an indirect evaluation of the MLA height. This method was chosen due to its simple, cost-effective and noninvasive characteristics. We followed the basic principles of the IA measurement proposed by Cavanagh & Rodgers, but modified it, by introducing the footprint scanning and AI calculation using a software program created by one of the authors. A total of 100 footprints were analyzed from 25 male and 25 female healthy, nonobese subjects, with a mean age of 34.7 years, ranging from 10 to 59 years. The AI reference values obtained from a sample of the Brazilian population were 0.21< IA < 0.25. There was no significant statistical difference between the values obtained from the Brazilian and American samples.
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