Multi-Sensor Integration in Orthopedic Implants for Total Knee Arthroplasty

In this work, we introduce the design and fabrication of an innovative multi-sensor system integrated into a knee implant, aimed at the early detection of postoperative complications. This system incorporates pH and temperature sensors for infection detection, accelerometers for measuring flexion angles, and force and moment sensors to identify postoperative complications, particularly mechanical issues. A 13.56 MHz RFID-based system was employed for power and data transmission. Collaborative efforts with clinicians and project partners were crucial in designing, testing, and validating the prototype, with initial experiments conducted on cadaveric specimens.