Furthermore, patients were excluded if regional anesthesia was contraindicated, spinal anesthesia failed, or the femoral nerve block and/or intravenous patient-controlled analgesia (PCA) was discontinued Volume 471, Number 9, September 2013 RCT of Low-dose Dexamethasone After TKA 3011 123 before the planned schedule. Patients who declined to participate in the trial or who were unable to provide informed consent were excluded. A computer-generated randomization table permuted into blocks of four and six was used to randomly assign patients to either the Dexa-Ra group or Ra group. One of the authors (JHL) who was not involved in patient recruitment for this trial telephoned a surgeon for allocation assignments 1 week before surgery.