Inclusion Criteria:  Age > 18 years Primary total knee arthroplasty Patients staying at least one night in the hospital after surgery  Exclusion Criteria:  Same day discharge Age < 18 years Revision or partial total knee arthroplasty Corticosteroid use within 3 months prior to surgery Inflammatory arthritis Current systemic fungal infection Renal or liver failure Prior adverse reaction to corticosteroid Primary TKA requiring hardware removal