Fig. 2
From: Predictors of flatfoot in 11–12-year olds: a longitudinal cohort study
Foot skeletal structure according to the quartiles of the SHN angle for the 9–10-year olds. a ABD rate and NH rate, b the SHN angle for the 11–12-year-old participants, classified by the quartiles of the SHN angle for the 9–10-year-old participants. *p < 0.05; **p < 0.01. ABD, axis of the bone distance; NH, navicular height; SHN, second toe–heel–navicular angle