Mobile Apps for Foot Measurement in Pedorthic Practice : Scoping Review
( 4 ) whether the app contained information for raising public foot health awareness .
Results
Summary of Search Results
The initial searches using the primary and secondary search terms yielded a set of 145 apps across the two app stores , 41.4 % ( 60 / 145 ) of which were excluded from any further review to satisfy the exclusion criteria of app duplication across stores . Of the remaining apps , 35.2 % ( 51 / 145 ) were excluded due to failing to satisfy the inclusion criteria of relevance to foot measurement and not having any app store rating or comment . Of the remainder , after installing and using the apps , 5.5 % ( 8 / 145 ) were excluded due to various app module errors and store restrictions . In total , 26 apps were selected as eligible to be reviewed as foot measuring apps using our proposed modified rating scale .
Overall Assessment of the Apps
The overall assessment of all eligible apps in this study ( reported in Table 2 ) led to the discovery that most apps belong to the 2D and 3D scanning subcategories . The categorical distribution of all the reviewed apps is shown in Table 3 .
The 2D and 3D scanning subcategories are the most important since they handle output as raw measurement values , which can be used to make custom-made shoes or to recommend an individualized shoe fit , and to provide users with foot dimension measurements that may further be used to maintain foot health and prevent foot-related problems . Apps in these two categories mostly use calibration markers such as standard-sized papers ( eg , A4 , A5 ) and purchasable barcode stickers . They use the camera sensors on mobile devices to capture , process , and measure users ’ foot dimensions . Of these apps , 31 % ( 8 / 26 ) are the 2D scanning type and 35 % ( 9 / 26 ) are the 3D scanning type . Seven of the nine 3D scanning apps require an external sensor ( eg , Structure sensor , KinectV2 ) for the app to function properly and all of these apps can reconstruct a 3D foot model , which is valuable since 3D foot model data are useful for making custom shoes .
Most of the apps targeted a general group of users with no age requirements whereas the apps specifically categorized as 2D and 3D
Current Pedorthics | July-August 2021 25