Cancienne JM, et al. - In this study, investigators studied data to examine the relationship between the timing of ipsilateral postoperative corticosteroid injection after simple knee arthroscopy and infection. They noted a significantly higher rate of infection in the 2-week group compared with the 6- and 8-week groups in both the private payer (PP) and Medicare (MC) datasets. Higher rate of infection was also reported in the 4-week group when compared with the 6- and 8-week groups. As compared to patients with steroid injections more than 4 weeks postoperatively and matched controls who did not receive injections, a significant association was noticed between intra-articular knee corticosteroid injections within 4 weeks of surgery and an increased incidence of postoperative infection in both MC and PP patients after knee arthroscopy.