Abstract
1. A case of late infection about a total knee prosthesis secondary to urinary tract infection is described, indicating that haematogenous spread of infection to a prosthetic joint can occur.
2. The prophylactic use of antibiotics to cover surgical and dental treatment and the energetic treatment of intercurrent infection are urged for patients with artificial joints.
3. Any conservative treatment of established infection in such cases should include complete excision of all necrotic material from the joint.