Fig. 1From: “Simple mechanical devices did not improve pelvis positioning in AP pelvis radiographs for reliable assessment of the acetabular orientation”Positioning device I: vertical acrylic glass panel attached to wooden base (1), height adjustable horizontal acrylic glass panel (2) with guide slots for the styli (3). The styli were placed in the same height on the superior anterior iliac spines and the pubic symphysisBack to article page