BACKGROUND: @entity570 often coexists with adult @entity85 , an abnormality in which sagittal @entity893 is present. Debate exists whether to perform spinal realignment correction or total hip arthroplasty first. Hip extension and pelvic tilt are important compensatory mechanisms in the setting of sagittal @entity893 and change after spinal realignment. We performed this study to evaluate the effect that the spinal realignment surgical procedure has on acetabular anteversion. METHODS: This study is a retrospective review of a multicenter, prospective, consecutive database of @entity1 with adult @entity85 who underwent surgical spinal realignment. Only @entity1 who already had undergone a total hip arthroplasty prior to the spinal realignment procedure were retained for analysis. @entity1 were excluded if they had insufficient imaging or large-head, metal-on-metal bearings or they had undergone revision total hip arthroplasty in the study period. Acetabular anteversion was calculated via the @entity7085 method on a standing, posterior-anterior, 90-cm radiograph with a well-centered pelvis. Anteversion was measured preoperatively and at six weeks or three months after the spinal realignment procedure. Spinopelvic parameters measured included pelvic incidence, pelvic tilt, sacral slope, @entity1515 , T1 pelvic angle, sagittal vertical axis, T1-spinopelvic inclination, and @entity1513 . RESULTS: Forty-one hips (thirty-three @entity1 ) were identified. Acetabular anteversion significantly reduced (p < 0.001) after spinal correction by mean change of -4.96   (range, -22.32   to +2.36  ). The change in anteversion correlated with the changes in sagittal pelvic orientation (0.828 for the pelvic tilt, -0.757 for the sacral slope, and -0.691 for the @entity1515 ) and global spinopelvic alignment (0.579 for the sagittal vertical axis and 0.585 for the T1 pelvic angle). Regression analysis revealed that anteversion decreased by 1   for each of the following spinopelvic parameter changes (p < 0.001): 1.105   for spinopelvic tilt, 1.032   for sacral slope, and 3.163   for @entity1515 . CONCLUSIONS: @entity1 with @entity893 had a high prevalence of excessively anteverted acetabular components. Sagittal spinal correction following total hip arthroplasty resulted in reduced acetabular anteversion, which may have implications for stability. Changes in anteversion are most closely related to changes in pelvic tilt in an almost one-to-one ratio. LEVEL OF EVIDENCE: Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.

Acetabular Anteversion Changes Due to XXXX Correction: Bridging the Gap Between Hip and Spine Surgeons.

@entity1 :: ('9606', 'Species') :: ['Patients', 'patients'] @entity1513 :: ('MESH:D007738', 'Disease') :: ['thoracic kyphosis'] @entity1515 :: ('MESH:D008141', 'Disease') :: ['lumbar lordosis'] @entity85 :: ('MESH:D009140', 'Disease') :: ['spinal deformity'] @entity7085 :: ('301928', 'Species') :: ['ellipse'] @entity893 :: ('MESH:D017760', 'Disease') :: ['spinopelvic malalignment'] @entity570 :: ('MESH:D015207', 'Disease') :: ['Hip osteoarthritis']
@entity85 :: (MESH:D009140,Disease) :: ['Spinal Deformity']
