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The Bone & Joint Journal
Vol. 99-B, Issue 1_Supple_A | Pages 37 - 45
1 Jan 2017
Stefl M Lundergan W Heckmann N McKnight B Ike H Murgai R Dorr LD

Aims

Posterior tilt of the pelvis with sitting provides biological acetabular opening. Our goal was to study the post-operative interaction of skeletal mobility and sagittal acetabular component position.

Materials and Methods

This was a radiographic study of 160 hips (151 patients) who prospectively had lateral spinopelvic hip radiographs for skeletal and implant measurements. Intra-operative acetabular component position was determined according to the pre-operative spinal mobility. Sagittal implant measurements of ante-inclination and sacral acetabular angle were used as surrogate measurements for the risk of impingement, and intra-operative acetabular component angles were compared with these.