Background and purpose—Hip dislocation is one of the most common complications
following total hip arthroplasty (THA). Several factors that affect dislocation have been …

Background Changes in spinal alignment and pelvic tilt alter acetabular orientation in
predictable ways, which may have implications on stability of total hip arthroplasty (THA) …

Background Acetabulum positioning affects dislocation rates, component impingement,
bearing surface wear rates, and need for revision surgery. Novel techniques purport to …

Purpose Dislocation after total hip arthroplasty (THA) is a major postoperative complication.
Even if the cup is in the safe zone, dislocation caused by implant impingement may occur …

Background The effect of fixed spinal deformities on a functional pelvis from standing to
sitting is not fully understood. We aimed to assess the change in preoperative sagittal pelvic …

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Abstract Purpose of Review The orientation of the spine relative to the pelvis—particularly
that in the sagittal plane—has been shown in both kinematic and radiographic studies to be …

Proper cup alignment is crucial in total hip arthroplasty for reducing impingement risks,
dislocations and wear. The Lewinnek “safe zone” is often used in clinical routine. This safe …

Purpose Pelvic tilt determines functional orientation of the acetabulum. In this study, we
investigated the interaction of pelvic tilt and functional acetabular anteversion (AA) in supine …

Background The aims of this study were to (1) assess the degree of variation in acetabular
component placement and combined anteversion in a large cohort of dislocating total hip …