Fig. 2From: “Simple mechanical devices did not improve pelvis positioning in AP pelvis radiographs for reliable assessment of the acetabular orientation”Positioning device II: a wood-framed acrylic glass plate with three different guide slots that allowed for individual positioning of the pegs; the pegs were placed on the superior anterior iliac spines and the pubic symphysis; additional spirit levels (insert) were installed for the horizontal alignmentBack to article page