Continuous intra-lesional Infusion Combined with Interscalene Block for Effective Postoperative Analgesia after Arthroscopic Shoulder Surgery Oh Joo-Han; Kim Jae-Yoon; Gong Hyun-Sik; Kim Jae-Kwang; Kim Sang-Gee; Kim Tae-Yune; Rhee Ka-Young; Kim Woo-Sung;
Purpose: The purpose of this study was to compare the effectiveness of postoperative pain control by intravenous patient-controlled analgesia (IV) to the effectiveness of postoperative pain control by continuous intra-lesional infusion of local anesthetics (IL) with or without an interscalene brachial plexus block (ISB) after arthroscopic shoulder surgery. Materials and Methods: We designed this prospective randomized case-controlled double-blind study, and allocated 84 consecutive patients to four groups according to postoperative analgesic method, i.e., Group IV, Group ISBIV, Group IL, and Group ISB-IL after arthroscopic shoulder surgery. Postoperative pain, side effects and supplemental analgesics were recorded at 1 hour and then at every 8 hours for 2 days. Result: The demographic and clinical characteristics of four groups were identical statistically. Interscalene block (Group ISB-IV, Group ISB-IL) was found to be effective at relieving pain and at reducing supplemental analgesic amounts at 1 and 8 hours postoperatively (p<0.05). Patients in the Group ISB-IL had less pain at 16 and 48 hours postoperatively than the other groups (p<0.05). Continuous intra-lesional infusion (Group IL, Group ISB-IL) was superior in reducing analgesic-related side effects (p<0.05). Conclusion: This study suggests that a combination of an interscalene brachial plexus block and continuous intralesional infusion of ropivacaine is an effective and safe method of postoperative pain control in patients after arthroscopic shoulder surgery.
Efficacy of Interscalene Block Anesthesia on the Early Postoperative Pain after Arthroscopic Shoulder Surgery: Comparison with General Anesthesia, Journal of the Korean Orthopaedic Association, 2011, 46, 4, 288