Correlation between radiographic morphometry and body surface somatometry forfoot arches

摘要

[Purpose] Foot arches are evaluated using radiographic morphometry and body surfacesomatometry. While several studies have examined the correlations between these methodsand the medial longitudinal arch, very few studies have investigated the same fortransverse arches. In this study, we analyzed the correlation between radiographicmorphometry and body surface somatometry at medial longitudinal and transverse arches.[Participants and Methods] Fifty healthy adults were included in the study. Six mediallongitudinal and three transverse arch evaluation methods were evaluated for thecorrelation, including the foot posture index. [Results] A correlation was found betweenthe evaluation methods for the medial longitudinal arch, except the lateral talocalcanealangle; however, no correlation was found between the navicular-metatarsal angle andtransverse arch-length ratio in transverse arch evaluation. Additionally, there was nocorrelation between the evaluation methods for the medial longitudinal and transversearches. The foot posture index was particularly correlated with radiographic mediallongitudinal arch evaluation methods. [Conclusion] During evaluation with radiographicmorphometry, it is difficult to set bone markers and differences in tarsal bonearrangement affect the relationship between them; in body surface somatometry, there weredifferences in measurement at sites with excessive soft tissue. Elucidating the cause forthe lack of correlation between the medial longitudinal and transverse arches requiresfurther investigation.