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In this x-ray are recognizable three typical signs of femoral acetabular impingiment pincer type:
- The cross-over sign is reflected in the AP projection with an overhanging anterior acetabular margin. The anterior and posterior walls of the acetabulum projectionally intersect midway over the femoral head creating a figure 8 appearance.
- There is prominently seen ischial spines indicating acetabular retroversion. These are normally not visible on anterior-posterior radiographs.