Robotic-arm assisted THA yielded ‘excellent results’ at 44 months
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At 44-month follow-up, primary robotic-arm assisted total hip arthroplasty yielded low pain scores and revision rates, as well as improved functional scores and patient satisfaction, according to published results.
Benjamin G. Domb, MD, and colleagues analyzed the results of 447 patients (501 hips) who underwent primary THA with the Mako robotic system (Mako Surgical Corp [Stryker]) from April 2012 to May 2017. The mean follow-up was 43.99 months.
Outcome measures included Harris hip score (HHS), forgotten joint score-12 (FJS-12), VAS pains scores, patient satisfaction and rate of revision surgery, according to the release.
“Patients who received primary robotic-arm assisted THA reported excellent results at 44-month follow-up for multiple patient-reported outcome measurements,” the researchers wrote in the study. “Consistency in acetabular cup placement accuracy was achieved regarding the Lewinnek and Callanan safe zones,” they added.
At final follow-up, Domb and colleagues found mean HHS was 90.87, mean FJS-12 was 79.97, mean VAS score was 1.20 and mean patient satisfaction score was 8.85. Additionally, researchers noted a revision rate of 3.2% (n = 16 hips).
“To the authors’ knowledge, this is currently the largest case series of THA with a robotic arm with haptic guidance reported in the literature,” the researchers wrote.
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