Laminarity index by octant (A) and strain mode (B). In both subadult (n = 11) and adult (n = 11) bones, laminarity index in ‘compression’ cortices (D-Cd, D, D-Cr) is significantly higher than in ‘tension’ cortices (V-Cr, V, V-Cd) and ‘neutral axis’ (NA) cortices (Cr, Cd) (P < 0.01). In subadults, there is no significant difference in laminarity index between ‘tension’ cortices and ‘neutral axis’ cortices (P = 0.51). *Significant difference between age groups for each octant (A) or specific strain mode (B). Error bars represent one standard deviation.