Open and Closed Platform Robotic-assisted Versus Conventional Total Knee Arthroplasty

REAL INTELLIGENCE™ CORI™ (CORI Surgical System) is a computer-assisted orthopedic surgical system. CORI Surgical System is designed to aid surgeons in planning and executing a procedure involving bone preparation for total knee arthroplasty (TKA) procedures. CORI Surgical System is comprised of a console control unit, optical tracking camera, primary and secondary input displays (tablet and optional display monitor), and foot pedal. The CORI Surgical System software consists of a patient and user management module, a surgical planner, and an intra-operative cutting module. Yuanhua Orthopaedic Robotic Systems, KUNWU, is an open-platform robotic system that does not restrict surgeons in choosing the type of prosthesis implant. It is the only Orthopaedic Robotic System in Hong Kong registered with the HK Department of Health Medical Devices Control Office (MDCO) as an open platform system. Unlike other manufacturer's implant-based robots (closed systems), Yuanhua's objective is to provide maximum flexibility in choosing the best implant for each patient. Closed system robots not only impact the surgeon's choice of implant for an individual patient but also affect the hospital's implant purchases over multiple years without any negotiation power on pricing. This business model is often referred to as a "razor and razor blade" model. The primary objective of this study is to evaluate the use of open and closed platform robotic-assisted TKA procedure in achieving post-operative leg alignment as compared to procedures using standard instruments. The secondary objective of this study is to assess the safety and performance of the robotic-assisted TKA procedure up to 12 months after surgery as compared to procedures using conventional manual instruments.