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. 2014 Dec 5;473(6):2056–2066. doi: 10.1007/s11999-014-4084-x

Fig. 6A–C.

Fig. 6A–C

The innominate rotation angles are shown. (A) The superior iliac wing angle (SIA) is formed by the intersection of a line connecting the medial edge of the anterosuperior iliac spine and the anterior margin of the sacroiliac joint and a horizontal line on the axial plane. (B) The inferior iliac wing angle (IIA) is formed by a line connecting the anterior aspect of the anteroinferior iliac spine and the posterior aspect of the ilium and a horizontal line on the axial plane. (C) The ischiopubic angle (IPA) is a projection angle formed by the intersection of a line connecting the anterosuperior edge of the pubic symphysis and the ischial spine and a sagittal line on the axial plane.