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This paper guides readers through important parameters and imaging associated to spinopelvic motion as it relates to total hip arthroplasty stability.ĭislocation hip-spine relationship instability risk factors safe-zone spinopelvic total hip arthroplasty.Ĭopyright © 2021 Elsevier Inc. When I saw my surgeon at 15 months for a review of my left hip he indicated and showed us the comparison x-rays that there was little if no deterioration in the 15 month timeframe since my RTHR. A systematic preoperative workup can help to identify hip-spine pathology that predisposes patients to instability, and can help in planning and establishing a patient-specific "safe zone." Based on the presence of concomitant hip-spine pathology, patients must be evaluated thoroughly with preoperative imaging to plan for the optimal target acetabular cup position. Although, it was clear on the x-rays that my left hip would eventually require replacing. If CT is planned for evaluation of other abdominal and pelvic soft-tissue injuries, is x-ray needed If so, in which patients 9. When pelvic x-ray is normal, who needs CT 8. Osteoporotic wedge fracture T-spine lateral view. Hover on/off image to show/hide findings. Who needs pelvic x-ray following trauma 7. Osteoporotic wedge fracture T-spine lateral view. How should x-ray and CT of the pelvis be interpreted 6. Through the use of a standing anteroposterior pelvis X-ray, lateral spinopelvic radiographs in the standing and seated position, and advanced functional imaging, key spinopelvic parameters can be obtained. What are the techniques for pelvic x-ray and CT 5. Moreover, the next generation high-resolution pQCT (HR-pQCT) provide also an evaluation of trabecular bone structure ( e.g. The hip-spine relationship is complex, and a detailed analysis of each patient's spinopelvic mobility is warranted to help guide safe acetabular component positioning. In this way analysis of the hip, a clinically important site of fracture, is more precise than in 2D single slices and scan times are below 10 s for the spine or femur. Understanding spinopelvic motion and the dynamic relationship of the hip, spine, and pelvis is essential in decreasing the risk of instability after total hip arthroplasty. An August 2017 study in the Journal of Clinical Orthopaedics and Trauma reported on a case of a 76-year-old female who presented with hip pain of sudden onset and normal X-rays.