Figures & data
Postoperative pain after bilateral hip arthroplasty (n = 12) with local infiltration of ropivacaine or saline intraoperatively. Re-injection of ropivacaine or saline after 8 h (20 mL/40 mg) and 24 h (50 mL/100 mg). Values are median with twenty-fifth and seventy-fifth percentiles. VAS: visual analog scale, where 0 cm = no pain and 10 cm = worst pain. * p < 0.05. The arrows indicate re-injection times.
