ArchCheck Tool: An Innovative Instrument to Measure Arch Height

Abstract

BACKGROUND Pes planus, commonly known as flat foot is a deformity of the foot, characterized by loss of the medial longitudinal arch of the foot. There are several diagnostic methods available, such -as radiographs and digital footprint scanning techniques, that involve the usage of ink, dyes, and expensive instrumentation which may be harmful and not readily available at all time. The arch height may prove to be a user-friendly, portable, and affordable means of grading the foot. However, no tools were found during the search for review of literature. Hence, a need for a tool to measure the arch height and further give standard range of the arch height for flat feet and non-flat feet was identified. OBJECTIVE To design a tool and further provide values to differentiate flatfoot and non-flatfoot using arch height as a measurement tool. RELEVANCE The instrument was designed to quantify arch height and values to differentiate flatfoot and non-flatfoot are provided by comparison with Chippaux Smirak Index (CSI). METHOD The study evaluated the medial longitudinal arches of 30 individuals (60 feet) using static footprints and arch height measurement with tool. The footprints were classified into flatfoot and non-flatfoot using CSI. Data was subjected to appropriate statistical analysis. RESULTS The range of medial longitudinal arch height between 15-21mm in sitting position and 13-19 mm in standing position identified with non-flat foot, while the range of medial longitudinal arch height between 10-14 mm in sitting position and 8-12 mm in standing position identified with flat foot when compared with CSI. These findings suggest that the tool can be used effectively to measure the medial longitudinal arch height and differentiate between individuals with flat foot and non-flat foot. CONCLUSION The study concludes that the tool is effective in measuring the medial longitudinal arch height and can be used to differentiate between individuals with flat foot and non-flat foot. Designers of the tool would like to name the tool as ArchCheck Tool.