A method for revision arthroplasty of an embodiment is detaching an existing femur component of an artificial joint from a femur, the existing femur component being fixed by cement, and the artificial joint being composed of the existing femur component and an acetabulum component； breaking and removing the cement and bone remaining in an attaching of the femur from which the existing femur component was detached, by transmitting ultrasonic vibration to a treating section provided at a probe distal end of an ultrasonic treatment device when the treating section is brought into contact with the cement and the bone, and regenerating an attaching hole for a new femur component； applying cement in the regenerated attaching hole； and attaching and fixing a new femur component in the regenerated attaching hole.
