Patient outcomes of conventional versus robot assisted total hip arthroplasty

Abstract

Background: Robotic assisted (RA) total hip arthroplasty (THA) may provide improved precision and accuracy; however, contention remains on whether RA THA provides better patient outcomes than conventional THA. This study compares short-term clinical outcomes, complication rates, and operative times between these two groups. Methods: We retrospectively reviewed charts for demographic data, comorbidities, operating time, revisions, and complications of patients who underwent RA and conventional THA. Patient-reported outcomes were collected via OBERD database at the following timepoints: preoperatively, 6-month, 1-year, and 2-year postoperatively. Descriptive statistics and mixed multivariate regression analyses were used to analyze data. Results: Two hundred ten patients were included (n=149 conventional, n=61 RA). Patients with RA THAs were younger than those with conventional THAs (59 years, IQR: 53-66 and 64 years, IQR: 58-71; P=.002). The operative time was longer for the RA compared to the conventional group (106 minutes, IQR: 92-120 and 92 minutes, IQR: 82-109, respectively, P=< .001). There was no statistically significant difference in SF-12 mental scores, SF-12 physical scores, or OHS between RA and conventional THA at different timepoints. Additionally, there was no statistically significant difference in complication and revision rates between the two groups. Conclusion: Our findings demonstrated that there were no statistically significant differences in patient-reported outcomes between the RA versus conventional THA groups. Furthermore, our findings suggest a lack of significant differences in complication or revision rates. Surgeons performing robot-assisted surgeries for hip replacements can reasonably expect patient outcomes that are, at a minimum, as successful as the conventional counterparts.