Pelvic rotation

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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 .

The neutral pelvic rotation has been defined as the coccyx in line with the symphysis pubis.

Practical points

Signs and measurements influenced by pelvic rotation include the following: