Methods: A retrospective review of 3,231 arthroscopic knee surgeries was performed at a physicianowned
in-office ambulatory surgery center over a 3-year period, of which 2,780 were arthroscopic
meniscectomies. The cases were evaluated with respect to the incidence of deep infection as
evidenced by a positive joint aspirate. Approximately 30% of the patients had prophylactic intravenous
antibiotics within 1 hour before the arthroscopic procedure.