The primary purpose of this study is to compare the re-infection rates in patients undergoing 2-stage revision arthroplasty who receive additional oral antibiotic therapy to those patients who received in-hospital perioperative antibiotic only. Patients will be monitored for re-infection following hospital discharge, defined as deep infection of the joint space/capsule that requires return to the operating room within 24-months of the re-implantation procedure.

Inclusion criteria:

Adult patients undergoing 2-stage revision arthroplasty of the knee or hip with the causative organism(s) identified using tissue culture and/or joint fluid analysis that is amenable to oral antibiotic therapy. Patients must be able to tolerate oral antibiotics and agree to participate in the study.

Exclusion criteria:

Patients with a fungal prosthetic joint infection, unable to tolerate or refuse to undergo oral antibiotic therapy, unable to follow-up at the specified intervals, allergic to the therapy of preference, or have an organism that is not amenable to oral antibiotic therapy.