An ap axial sacrum with poor positioning demonstrates the symphysis pubis is rotated toward the patient's left side. The Positioning Setup misposition for such a projection was to be obtained by the patient was in an RPO position. (Option B)
The sacrum is made up of three surfaces:
The sacrum's large and extended base is pointed upward and forward.
An ala of sacrum is a large protrusion on each side of the base that articulates with the sacroiliac joints.
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Full Question:
An AP axial sacral projection with poor positioning demonstrates the symphysis pubis rotated toward the patient's right side. How was the positioning setup mispositioned for such a projection to be obtained?
A. the central ray was angled too cephalically
B. the patient was in an RPO position
C. the patient's legs were extended
D. the patient was in an LPO position