Fig. 6: Significant interactions between sex and CRL in the sacrum.
From: Sexual dimorphism of the human fetal pelvis exists at the onset of primary ossification
a Scatter plot of the transverse diameter of the fifth sacral vertebra (#19). The male and female regression lines are represented in blue and red, respectively. The dataset comprised 72 human fetus specimens. b Ventral view of the reconstructed sacrum in males (CRL, 170 mm) and females (CRL, 173 mm). Scale bar, 5 mm. c Scatter plot of the ratio of the first sacrum’s transverse diameter to its longitudinal length (#17/[#15 + #16]). Blue and red squares indicate the estimated means for males and females in each CRL subgroup, respectively. d Ventral view of the reconstructed sacrum in males (CRL, 57 mm) and females (CRL, 57 mm). Scale bar, 2 mm. CRL crown-rump length.
