Kinematic assessment of robot-assisted uni-compartmental knee arthroplasty during activities using 3d fluoroscopy

Unicompartmental knee arthroplasty (UKA) replaces the damaged compartment of the osteoarthritic knee with less tissue damage and presumably better restoration of the kinematics compared to total knee arthroplasty (TKA). However, the outcome depends heavily on the accurate restoration of the mechanical alignment of the knee, the challenge of which may be resolved by robot-assisted surgery. The current study aimed to compare the knee kinematics between robot-assisted UKA, minimally invasive TKA with or without patient-specific instrumentation, and healthy controls. Results showed that robot-assisted UKA had the best reconstructed kinematics during activities among all surgical groups when compared to the controls.