Figure 4.
Correlation between the relative coronal height (VD/HD) of the supraorbital margin and the obtuseness of the sagittal angle (θ) of the supraorbital margin. The sagittal angles between a horizontal plane parallel to the Frankfurt plane and a plane tangent to the orbital roof were measured at the highest supraorbital margin in the sagittal view in 3D-CT images in a representative subject without visible SPC who persistently lifted the eyebrow in primary gaze (a) and a representative subject with visible SPC who did not (b). (c) The relationship between the relative coronal height (VD/HD) of the supraorbital margin and the obtuseness of the sagittal angle (θ) was significantly correlated (r = 0.925, P < .0001) for 10 subjects without visible SPC (filled circles) and 13 subjects with visible SPC (open circles).