Pain relief with epidural buprenorphine after spinal fusion: a comparison with intramuscular morphine.

In a prospective randomized trial, epidural buprenorphine was compared with intramuscular morphine for pain relief after spinal corrective surgery. Both forms of analgesia were given on demand and both produced excellent reduction of pain as assessed with visual linear analogue. The quality and duration of analgesia were similar for both groups of patients. Since the correct placement of epidural catheters could be done intraoperatively in difficult cases and since many patients for spinal corrective surgery have limited respiratory reserve, the authors feel that epidural buprenorphine provides an excellent alternative to conventional opiate analgesia after this type of surgery.