Precision of Acetabular Cup Placement in Robotic Integrated Total Hip Arthroplasty. Issue 6 (November 2015)

• Record Type: Journal Article
• Authors: Elson, Leah; Dounchis, Jon; Illgen, Richard; Marchand, Robert C.; Padgett, Douglas E.; Bragdon, Charles R.; Malchau, Henrik
• Is Part Of: Hip international. Volume 25:Issue 6(2015)
• Page Start: 531
• Page End: 536
• Publication Date: 2015-11
• Subjects: Arthroplasty -- Hip -- Acetabular cup positioning -- Robotic-arm; Hip joint -- Pathophysiology -- Periodicals; Hip joint -- Diseases -- Periodicals; Hip joint -- Surgery -- Periodicals; 617.581005
• DOI: 10.5301/hipint.5000289
• Languages: English
• ISSNs: 1120-7000

Abstract

Aims: The aim of this study was to assess the efficacy of stereotactic-arm assisted acetabular component placement during total hip arthroplasty (THA). Methods: 120 patients underwent primary THA at 4 different medical centres. A preoperative pelvic CT protocol was used to plan socket placement followed by robotic-arm assisted acetabular preparation and cup insertion. Intraoperative cup position was recorded and postoperative placement measured using Martell suite analysis software. Results: Using a 95% predictive intervals, robotic-arm cup placement was within +/-4 degrees of planned position in 95% of cases. Applying these data to the so-called safe zone, 96% of sockets were within the defined safe zone. Our data confirms that intraoperative robotic assistance improves the precision of preparation and position of the acetabular cup during total hip arthroplasty.