Infections can happen any time to anyone. Unfortunately, infections in joint replacements can be hard to treat for a variety of reasons. First, it isn't always easy to tell what type of bacteria is causing the infection. This means that it can be difficult to choose the best type of antibiotic.
When deciding how to treat an infection in an artificial knee, the doctor has to take into consideration the condition of the patient, how long the infection has been present, how much damage may have been done, and what the options are. In some people, opening up the knee and clearing out the infected tissue may do the trick, along with antibiotics. However, in others, the knee may have to be completely removed and replaced with a new one.