Comparison of intra-articular analgesics in arthroscopic anterior cruciate ligament reconstruction surgeries: A randomized controlled trial

Vijayalakshmi Sivapurapu, Shishir Suranigi Murugharaj, Sai Saran Panathula Venkata

Journal of Anaesthesiology Clinical Pharmacology 2017 33(3):391-396

Background and Aims: Arthroscopic anterior cruciate ligament reconstruction (ACLR) is one of the most common knee surgeries done worldwide today. It involves immense pain at sites of graft harvest, tibial, and femoral tunnels, thereby delaying recovery and increased patient morbidity, and delayed rehabilitation. Various drugs and combination of drugs administered intra-articularly have been studied for analgesic efficacy. Our study gives an insight if there is any added advantage of additives morphine or clonidine to bupivacaine when compared to administering bupivacaine alone. Material and Methods: After obtaining the Institute Ethics Committee approval, ninety American Society of Anesthesiology I-II patients undergoing arthroscopic ACLR under spinal anesthesia were randomly assigned to one of three groups (Group B – bupivacaine alone 0.25%, Group BM – bupivacaine 0.25% with morphine 5 mg, Group BC – bupivacaine 0.25% with clonidine 150 mcg). At the end of procedure, 20 mL of the respective drug was administered intra-articularly and postoperative time duration to rescue analgesia, 24 h analgesic requirement, visual analog scale (VAS) score findings at rest and on movement were observed. Results: The mean duration of time to request for first rescue analgesia in minutes was significantly longer in Group BC 341.55 (103.66 SD) with P < 0.001. The VAS scores at that time point were least in Group BM 6.1 (1.7 SD), but not statistically significant. The 24 h analgesic consumption was least in Group B 2.24 (0.79 SD), but not statistically significant. Conclusion: Combination of bupivacaine and clonidine administered intra-articularly provided a longer duration of analgesia though the quality of analgesia was comparable between the three groups.

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