Comparison of early clinical outcomes between handheld milling-based Smith & nephew CORI robotic and cutting-guide ARTHROBOT knee systems in total knee arthroplasty

A comparative analysis was conducted to assess the early clinical results following total knee arthroplasty. (TKA) assisted by the handheld robotic milling CORI system (CRATKA group) versus the cutting-guide ARTHROBOT system (JRATKA group). This study included 103 patients suffering from end-stage knee osteoarthritis in a retrospective analysis. The JRATKA group demonstrated significantly shorter registration time, osteotomy time, and total operative time, alongside a steeper learning curve (13 cases vs. 17 cases). Radiographically, the JRATKA group achieved a coronal femoral component angle significantly closer to 90° and a superior sagittal femoral component angle. No significant intergroup differences were noted in hospital stay, haemoglobin loss, inflammatory markers, 1-month post-operative functional scores (VAS, KSS, WOMAC, ROM), complication rates, or patient satisfaction. Both systems facilitated precise implantation and excellent early functional recovery. The JRATKA system showed advantages in procedural efficiency, whereas the CORI system offers distinct flexibility. The choice should be individualised based on institutional resources and surgical team expertise.