Figure 2.

Acetabular angle (AC – Hilgenreiner). The AC- angle arises from a horizontal line trough the triangular cartilage at the right and left pelvis and a second line connecting the corner of the triangular cartilage and the lateral acetabular rim.

Windhagen et al. BMC Pediatrics 2005 5:17   doi:10.1186/1471-2431-5-17
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