ArticleArthroplasty today2025
Pelvic Position at Cup Placement Compared With Intraoperative Pelvic Motion in the Lateral Decubitus Position.
Article in Arthroplasty today, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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3 authors.
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Abstract
Background: It is important for surgeons to consider the pelvic position at cup placement for accurate cup placement. This position depends on both the pelvic position at set-up and the degree of intraoperative pelvic motion from set-up to cup placement. The present study aimed to characterize and compare the pelvic position at cup placement with intraoperative pelvic motion during primary total hip arthroplasty in the lateral decubitus position. This study also investigated whether the pelvic position at set-up or intraoperative pelvic motion had a greater impact on the pelvic position at cup placement. Methods: Pelvic positions were measured in 86 hips using an augmented reality-based portable hip navigation system. The pelvic reference plane was registered in the supine position, and patients were then positioned in the lateral decubitus position for surgery. Pelvic positions were recorded at set-up and at the time of cup placement. Results: Mean pitch and roll angles at cup placement were significantly different from those of intraoperative pelvic motion ( Conclusions: The pelvic position at cup placement differed from intraoperative pelvic motion. The pelvic position at set-up and intraoperative pelvic motion contributed differently to the pelvic position at cup placement.
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