Sport with an endoprosthesis is controversially discussed, whereas golf with a knee endoprosthesis is usually allowed. This case shows that playing golf can lead to severe wear of the prosthesis. The wear pattern of the components of the prosthesis suggests increased rotational loads. A change to a constrained prosthesis was made because of metal-to-metal contact. It is important to inform the patient before surgery about sports with endoprosthesis. Athletic loads are not part of prosthesis testing according to ISO.
Keywords: Knee joint; Physical activity; Resumption of sporting activity; Rotation; Total knee replacement.