The comparison of intraarticular morphine-bupivacaine and tramadol-bupivacaine in postoperative analgesia after arthroscopic anterior cruciate ligament reconstruction

Abstract

Purpose: To compare intraarticular morphine-bupivacaine and tramadol-bupivacaine as postoperative analgesics in patients undergoing arthroscopic anterior cruciate ligament (ACL) reconstruction.

Methods: A randomized, double blind, controlled trial study of 60 ASA I-II patients undergoing arthroscopic ACL reconstruction was performed under general anesthesia. Patients were randomly allocated into three groups. The MB group (n = 20) received 10 mg morphine and 0.5% bupivacaine; the TB group (n = 20) received 100 mg tramadol and 0.5% bupivacaine; and the control group (n = 20) received isotonic saline intraarticularly in a total volume of 20 ml after the operation. Postoperative pain was assessed with visual analogue scale (VAS) at 0, 30, 60, 90 min and 2, 4, 6, 12, 24 h being at rest. Analgesic duration as defined was the time of first request for analgesics, the first 24 h analgesic consumption, time to unassisted ambulation, discharge time and incidence of side effects were also evaluated.

Results: The VAS scores at 30, 60, 90 min and 2, 4, 12, 24 h were significantly less in the MB and TB groups in comparison with the control group (P < 0.05); VAS scores also decreased significantly in the MB group compared to the TB group at 2, 4 and 24 h (P < 0.05). Analgesic duration was longer and analgesic consumption was substantially less in the MB group (P < 0.05). Moreover, unassisted ambulation time and discharge time were significantly shorter in the MB group than the TB and control groups (P < 0.05). Side effects were similar among the groups.

Conclusions: Intraarticular morphine-bupivacaine provides effective pain relief, longer analgesic duration, less analgesic requirement, shorter unassisted ambulation and discharge time were compared with intraarticular tramadol-bupivacaine after ACL reconstruction arthroscopy.

Level of evidence: I.