Conclusion
In conclusion, the addition of either nalbuphine or dexmedetomidine to epidural bupivacaine was effective for postoperative analgesia. The fastest onset and longer analgesic duration with fewer side effects as well as higher patient satisfaction was observed with dexmedetomidine. Therefore, dexmedetomidine is a better epidural adjuvant than nalbuphine for postoperative analgesia in patients undergoing lower limb orthopedic surgeries.