Question 1

What is a two-stage revision knee replacement?

Accepted Answer

A two-stage revision is the gold standard for treating infected knee replacements. Stage 1 involves removing the infected implant and placing an antibiotic spacer. Stage 2 involves removing the spacer and implanting a new knee prosthesis once the infection is cleared.

Question 2

How long is the gap between the two stages?

Accepted Answer

Typically, the gap is between 6 weeks to 3 months. During this time, the patient receives targeted intravenous or oral antibiotics to ensure the infection is completely eradicated.

Question 3

Why can't the new knee be put in immediately if there is an infection?

Accepted Answer

Putting a new permanent implant into an infected environment has a very high failure rate. The two-stage approach ensures the 'house is clean' before the new components are installed, significantly improving the success rate.

Revision Knee Replacement Staged For Infection

Considering treatment?