Use of a fluoroscopy‐based robotic‐assisted total hip arthroplasty system resulted in greater improvements in hip‐specific outcome measures at one‐year compared to a CT‐based robotic‐assisted system

Background The purpose of this study was to compare one‐year patient reported outcome measures between a novel fluoroscopy‐based robotic‐assisted (FL‐RTHA) system and an existing computerised tomography‐based robotic assisted (CT‐RTHA) system. Methods A review of 85 consecutive FL‐RTHA and 125 consecutive CT‐RTHA was conducted. Outcomes included one‐year post‐operative Veterans RAND‐12 (VR‐12) Physical (PCS)/Mental (MCS), Hip Disability and Osteoarthritis Outcome (HOOS) Pain/Physical Function (PS)/Joint replacement, and University of California Los Angeles (UCLA) Activity scores. Results The FL‐RTHA cohort had lower pre‐operative VR‐12 PCS, HOOS Pain, HOOS‐PS, HOOS‐JR, and UCLA Activity scores compared with patients in the CT‐RTHA cohort. The FL‐RTHA cohort reported greater improvements in HOOS‐PS scores (−41.54 vs. −36.55; p = 0.028) than the CT‐RTHA cohort. Both cohorts experienced similar rates of major post‐operative complications, and had similar radiographic outcomes. Conclusions Use of the fluoroscopy‐based robotic system resulted in greater improvements in HOOS‐PS in one‐year relative to the CT‐based robotic technique.