A. Jurca et al., "Analysis of Hallux Valgus Angles Using 3D Foot Scans", Proc. of 3DBODY.TECH 2022 - 13th Int. Conf. and Exh. on 3D Body Scanning and Processing Technologies, Lugano, Switzerland, 25-26 Oct. 2022, #56, https://doi.org/10.15221/22.56.

Title:

Analysis of Hallux Valgus Angles Using 3D Foot Scans

Authors:

Ales JURCA 1,2, Yang JIAO 1, Saso DZEROSKI 2,3

1 Volumental AB, Stockholm, Sweden;
2 Jozef Stefan International Postgraduate School, Ljubljana, Slovenia;
3 Jozef Stefan Institute, Ljubljana, Slovenia

Abstract:

Hallux valgus angle (HVA) indicates the medial side of the forefoot shape. Radiography during weight bearing and goniometers are commonly used methods to measure HVA. The use of 3D scanning technology in footwear retail has enabled to collect large quantities of foot scans, and analyzing the variety of HVA in a population.
A dataset of over 25,000 foot scans of female 3D foot scans in length class 245mm was used in this study. The dataset was collected with Volumental 3D retail foot scanners, located in footwear stores in North America. An automatic algorithm was used to extract HVA from each foot scan.
Results show a large dispersion of HVA: the 5th percentile is equal to 2 degrees and the 95th percentile is equal to 24 degrees. The mean HVA is 11.7 +- 6.9 degrees. 26% of the feet have HVA larger than 15 degrees, which indicates hallux valgus - the most common forefoot deformity. These results may assist footwear brands in improving the design of footwear toe boxes to better fit the feet of their customers, and to reduce the occurrence of hallux valgus.

Details:

Extended Abstract: 2256jurca-eabs.pdf
Proceedings: 3DBODY.TECH 2022, 25-26 Oct. 2022, Lugano, Switzerland
Paper id#: 56
DOI: 10.15221/22.56
Presentation video: 3DBodyTech2022_56_jurca.mp4

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