Surgical site infections following hip and knee arthroplastic surgery: Trends and risk factors of Staphylococcus aureus infections.

We investigated surgical site infections (SSIs) following hip and knee arthroplasties to evaluate predictors of SSI. We found a significant increase in deep Staphylococcus aureus (SA) SSIs despite the decreasing overall SSI rate. The risk of deep SA-SSI differed between genders and among age groups and was affected by timing of surgery.