Manually instrumented implantation of a total knee prosthesis involves use of cutting guides or jigs that are secured to the femur and the tibia. The femoral guide is secured to the femur after an intramedullary referenced guide is placed into the femur and the rotational alignment is then assessed with use of the epicondylar axis. An extra-medullary tibial alignment guide will be used to create the tibial cut.

Robotically assisted surgery is used in conjunction with the preoperative CT scan and intra-operative bony registration of the patient's knee. Femoral and tibial trackers are placed and then the bone is registered using bony landmarks to allow the computer and robot to know where the patients' femur and tibia are in space. Once this is complete the preoperative templated surgical plan (performed by the PI) is used to register where to make the bony cuts in order to implant the knee components. The cutting process is performed by the surgeon with the robot assisting in guiding the cuts based on the registered CT anatomy. The surgeon has complete control of the cutting process with the assistance of the robot for placement of the cuts.

Manually instrumented implantation of a total knee prosthesis involves use of cutting guides or jigs that are secured to the femur and the tibia. The femoral guide is secured to the femur after an intramedullary referenced guide is placed into the femur and the rotational alignment is then assessed with use of the epicondylar axis. An extra-medullary tibial alignment guide will be used to create the tibial cut.

The absolute value of the individual differences in various angle measurements will be added together to form a total summation of angle difference.

Patient-Reported Outcomes Measurement Information System (PROMIS)