Leah Elson1, Jon Dounchis2, Richard Illgen3, Robert C Marchand4, Douglas E Padgett5, Charles R Bragdon1, Henrik Malchau1. 1. Harris Orthopaedic Laboratory, Massachusetts General Hospital, Boston, Massachusetts - USA. 2. Creekside Medical Center, Naples, Florida - USA. 3. University of Wisconsin, Madison, Wisconsin - USA. 4. South County Hospital, Wakefield, Rhode Island - USA. 5. Hospital for Special Surgery, New York - USA.
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.
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.
Authors: Antonia F Chen; Chi-Lung Chen; Sara Low; Wei-Ming Lin; Karthikeyan Chinnakkannu; Fabio R Orozco; Alvin C Ong; Zachary D Post Journal: HSS J Date: 2016-02-19
Authors: Emily L Hampp; Nipun Sodhi; Laura Scholl; Matthew E Deren; Zachary Yenna; Geoffrey Westrich; Michael A Mont Journal: Bone Joint Res Date: 2019-11-02 Impact factor: 5.853