"Pelvic rotation is one of three parameters contributing to the pelvic orientation and defines the rotation of the pelvis within the axial plane. It is a potential source of measurement errors on the pelvis (AP view). Correspondingly pelvic rotation can lead to false-positive or negative radiographic signs on the pelvis (AP view) as well as to false measurements including pelvic cup misinterpretation after hip arthroplasty 1-4."
"Pelvic rotation is one of three parameters contributing to the pelvic orientation and defines the rotation of the pelvis within the axial plane. It is a potential source of measurement errors on the pelvis (AP view). Correspondingly pelvic rotation can lead to false-positive or negative radiographic signs on the pelvis (AP view) as well as to false measurements including pelvic cup misinterpretation after hip arthroplasty 1-4."