Man versus robot as study aims to decide who is better at surgery They'll both perform a knee replacement operation The RACER study will determine if man or robot is better at performing knee replacement surgery Never miss another Warwickshire story by signing up to our free email updatesInvalid EmailSomething went wrong, please try again later. Subscribe When you subscribe we will use the information you provide to send you these newsletters. Your information will be used in accordance with ourPrivacy Notice. Thank you for subscribingWe have more newslettersShow meSee ourprivacy notice It will be man versus robot as a study aims to determine who is better at performing knee replacement surgery.