Robotic‐arm assisted bicompartmental knee arthroplasty: Durable results up to 7‐year follow‐up

Background The purpose of our study was to investigate the mid‐term clinical and functional outcomes of robotic‐arm assisted Bicompartmental knee arthroplasty (BiKA). Methods This study reviewed a single‐centre prospectively maintained cohort of 50 patients (53 knees) who underwent BiKA (patellofemoral and medial compartment) at 5‐ and 7‐year postoperative follow‐up. Results Mean follow‐up was 7.1 ± 0.1 years (range, 7.0–7.3). Kaplan‐Meier survivorship rates at 5 and 7 years were 96% and 93%, respectively. At 7‐year follow‐up, patient satisfaction was 76% satisfied, 13% neutral, and 11% not satisfied. Mean KSS‐FS was 80.5 ± 15.8 (range, 30–100) with 82% of patients reporting walking more than 10 blocks, 89% reporting walking without support, and 100% able to go up and down stairs with 61% requiring use of a rail. Three patients (four knees) underwent revision surgery. Conclusions Our study reported excellent survivorship and functional outcomes, and good‐excellent satisfaction at mid‐term follow‐up for robotic‐arm assisted BiKA.