Study: Robotic-assisted THA matches the imaging data in angles and measurements
Robotic-assisted total hip arthroplasty was found to be a close match for postoperative imaging results in predicting cup inclination and anteversion angles as well as leg-length and global offset changes, according to recently published data.
Researchers studied 61 patients who underwent robotic-assisted total hip arthroplasty (THA) using a mini-posterior approach between June 2011 and December 2012. Robotic and imaging data were evaluated by two blinded independent investigators. The primary factors of evaluation were cup inclination and anteversion angles, as well as leg-length and global offset changes.
Imaging measurements and robotic data were within 10° of each other in 96.7% of cup inclination angles and 98.4% of anteversion angles. Likewise, leg-length and global offset changes measured robotically were within 10 mm of imaging measurements in 100% and 91.8% of cases, respectively, according to the researchers.
Clinical outcomes were not recorded, and patient follow-up was not conducted in this study.
The researchers concluded that further refinement of the robotic system would improve the accuracy of predicting these postoperative parameters. –by Christian Ingram
Disclosure: Bitar has no relevant financial disclosures. Please see the full study for a list of all other authors’ relevant financial disclosures.