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Published on: August 4, 2022
Racial and Ethnic Disparities in the Utilization of Robotic-Assisted Total Hip Arthroplasty: A Propensity
Emmanuel Ogu1, Angel Valencia2, Senthil Sambandam2
1University of Texas Southwestern Medical School, 5323 Harry Hines Blvd. Dallas, TX 75390, USA.
Background:
Robotic-assisted total hip arthroplasty (RA-THA) has seen rapid adoption across the United States, yet whether racial and ethnic disparities in conventional total hip arthroplasty (THA) utilization extend to this emerging technology remains unknown. This study evaluated differences in RA-THA utilization across racial and ethnic groups.
Methods:
A retrospective propensity score-matched cohort study was conducted using a national database. Patients aged 18 years or older who underwent THA between January 1, 2014, and February 12, 2026, were identified. A minority cohort (Hispanic/Latino, Black/African American, Asian, and other non-White patients) was compared with a non-Hispanic White cohort. A total of 224,954 patients were included (37,992 minority; 186,962 White). The primary outcome was the odds of undergoing RA-THA, expressed as odds ratios (OR) with 95% confidence intervals (CI). Propensity score matching was performed using a 1:1 nearest-neighbor algorithm, balancing covariates including age, sex, body mass index (BMI), and relevant comorbidities.
Results:
In the unmatched analysis, minority patients had significantly lower odds of receiving RA-THA compared with White patients (OR 0.53, 95% CI 0.50 to 0.57, P < 0.001). Disparities were most pronounced among Black/African American patients (OR 0.41, 95% CI 0.38 to 0.45), followed by Asian (OR 0.67, 95% CI 0.56 to 0.80) and Hispanic/Latino patients (OR 0.68, 95% CI 0.59 to 0.78). After propensity score matching, these disparities persisted with nearly identical effect estimates across all groups (overall minority OR 0.53, 95% CI 0.50 to 0.59; P < 0.001).
Conclusion:
Major racial and ethnic disparities exist in RA-THA utilization in the United States. The persistence of these disparities after adjustment for clinical and demographic factors implicates structural and systemic barriers as primary drivers. As RA-THA adoption expands, targeted efforts are needed to ensure equitable access to this emerging surgical technology across all patient populations.