Novel Application of an Imageless Robotic System in Revision Total Knee Arthroplasty: Unicompartmental Knee Arthroplasty Conversion, 1‐Stage Revision, and 2nd‐Stage Revision

INTRODUCTION: Revision total knee arthroplasty (TKA) presents significant challenges due to factors such as infection, component failure, and bone loss. The application of the CORI imageless robotic systems in revision TKA remains underexplored. This study evaluates the utility of the imageless robotic system in three complex revision scenarios: unicompartmental knee arthroplasty conversion, one-stage revision, and second-stage revision. METHODS: A prospective case series of patients undergoing revision of TKA was conducted. Intraoperative surface mapping and soft tissue tension guided surgical planning. Standardised perioperative protocols and rehabilitation were applied. RESULTS: All patients demonstrated improved outcomes, with Knee Society Scores ranging from 90 to 95 and functional scores from 50 to 80 within two to six months postoperatively. Enhanced alignment and gap balancing were consistently achieved. DISCUSSION: The imageless system facilitated precise intraoperative assessment and standardised techniques in revision TKA, supporting its potential to improve clinical outcomes. Further studies are warranted to establish long-term benefits.