Giordano NA, Kent M, Andersen SG, et al. - Researchers conducted this secondary analysis of a prospective observational multisite study with the aim to explore the correlation between peripheral nerve block (PNB) use during total knee or total hip arthroplasty (TKA/THA) procedures and postoperative pain and sleep outcomes. They recruited a total of 197 patients undergoing TKA or THA procedures from 2 tertiary care facilities. Of these, 53% received PNB. They performed assessment of average pain and sleep disturbance scores, obtained preoperatively and at 1- and 2-week postoperatively. Findings revealed improved 1-week postoperative pain intensity in correlation with receiving PNB during TKA or THA; the improvement was, in turn, linked with lower sleep disturbances at both 1- and 2-week postoperative time points. They suggest the relevance of multimodal opioid sparing pain management interventions, capable of improving postoperative sleep, for improving recovery and rehabilitation following arthroplasty.